NETWORKING
1. How long is an IPv6 address?
A. 32 bits
B. 128 bytes
C. 64 bits
D. 128 bits
Explanation:
An IPv6 address is 128 bits long.
2. What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?
A. NAT
B. Static
C. Dynamic
D. PAT
Explanation:
Port Address Translation (PAT) allows a one-to-many approach to network address translation.
3. What are the two main types of access control lists (ACLs)?
Standard
IEEE
Extended
Specialized
A. 1 and 3
B. 2 and 4
C. 3 and 4
D. 1 and 2
Explanation:
Standard and extended access control lists (ACLs) are used to configure security on a router.
4. What command is used to create a backup configuration?
A. copy running backup
B. copy running-config startup-config
C. config mem
D. wr mem
Explanation:
The command to back up the configuration on a router is copy running-config startup-config.
5. You have 10 users plugged into a hub running 10Mbps half-duplex. There is a server connected to the switch running 10Mbps half-duplex as well. How much bandwidth does each host have to the server?
A. 100 kbps
B. 1 Mbps
C. 2 Mbps
D. 10 Mbps
6. Which WLAN IEEE specification allows up to 54Mbps at 2.4GHz?
A. A
B. B
C. G
D. N
Explanation:
IEEE 802.11B is 2.4GHz, but with a maximum of only 11Mbps. IEEE 802.11G is in the 2.4GHz range, with a top speed of 54Mbps.
7. Which of the following is the valid host range for the subnet on which the IP address 192.168.168.188 255.255.255.192 resides?
A. 192.168.168.129-190
B. 192.168.168.129-191
C. 192.168.168.128-190
D. 192.168.168.128-192
Explanation:
256 - 192 = 64. 64 + 64 = 128. 128 + 64 = 192. The subnet is 128, the broadcast address is 191, and the valid host range is the numbers in between, or 129-190.
8. To back up an IOS, what command will you use?
A. backup IOS disk
B. copy ios tftp
C. copy tftp flash
D. copy flash tftp
Explanation:
The command copy flash tftp will prompt you to back up an existing IOS in flash to a TFTP host.
9. What protocol does PPP use to identify the Network layer protocol?
A. NCP
B. ISDN
C. HDLC
D. LCP
Explanation:
Network Control Protocol is used to help identify the Network layer protocol used in the packet.
10. Which of the following commands will allow you to set your Telnet password on a Cisco router?
A. line telnet 0 4
B. line aux 0 4
C. line vty 0 4
D. line con 0
Explanation:
The command line vty 0 4 places you in a prompt that will allow you to set or change your Telnet password
11. Which protocol does DHCP use at the Transport layer?
A. IP
B. TCP
C. UDP
D. ARP
Explanation:
User Datagram Protocol is a connection network service at the Transport layer, and DHCP uses this connectionless service.
12. Which command is used to determine if an IP access list is enabled on a particular interface?
A. show access-lists
B. show interface
C. show ip interface
D. show interface access-lists
Explanation:
The show ip interface command will show you if any outbound or inbound interfaces have an access list set.
13. Where is a hub specified in the OSI model?
A. Session layer
B. Physical layer
C. Data Link layer
D. Application layer
Explanation:
Hubs regenerate electrical signals, which are specified at the Physical layer.
14. What does the passive command provide to dynamic routing protocols?
Stops an interface from sending or receiving periodic dynamic updates.
Stops an interface from sending periodic dynamic updates but not from receiving updates.
Stops the router from receiving any dynamic updates.
Stops the router from sending any dynamic updates.
Explanation:
The passive command, short for passive-interface, stops regular updates from being sent out an interface. However, the interface can still receive updates.
15. Which protocol is used to send a destination network unknown message back to originating hosts?
A. TCP
B. ARP
C. ICMP
D. BootP
Explanation:
ICMP is the protocol at the Network layer that is used to send messages back to an originating router
16. How often are BPDUs sent from a layer 2 device?
A. Never
B. Every 2 seconds
C. Every 10 minutes
D. Every 30 seconds
Explanation:
Every 2 seconds, BPDUs are sent out from all active bridge ports by default.
View Answer Discuss in Forum Workspace Report
17. How many broadcast domains are created when you segment a network with a 12-port switch?
A. 1
B. 2
C. 5
D. 12
Explanation:
By default, switches break up collision domains but are one large broadcast domain.
18. What does the command routerA(config)#line cons 0 allow you to perform next?
A. Set the Telnet password.
B. Shut down the router.
C. Set your console password.
D. Disable console connections.
Explanation:
The command line console 0 places you at a prompt where you can then set your console user-mode password.
19. Which router command allows you to view the entire contents of all access lists?
A. show all access-lists
B. show access-lists
C. show ip interface
D. show interface
Explanation:
To see the contents of all access lists, use the show access-lists command.
20. Which class of IP address has the most host addresses available by default?
A. A
B. B
C. C
D. A and B
Explanation:
Class A addressing provides 24 bits for host addressing
21. In a network with dozens of switches, how many root bridges would you have?
A. 1
B. 2
C. 5
D. 12
Explanation:
You should have only one root bridge per network.
22. What PPP protocol provides dynamic addressing, authentication, and multilink?
A. NCP
B. HDLC
C. LCP
D. X.25
Explanation:
Link Control Protocol in the PPP stack provides dynamic addressing, authentication, and multilink.
23. What is a stub network?
A. A network with more than one exit point.
B. A network with more than one exit and entry point.
C. A network with only one entry and no exit point.
D. A network that has only one entry and exit point.
Explanation:
Stub networks have only one connection to an internetwork. Only default routes can be set on a stub network or network loops may occur.
24. If your router is facilitating a CSU/DSU, which of the following commands do you need to use to provide the router with a 64000bps serial link?
A. RouterA(config)#bandwidth 64
B. RouterA(config-if)#bandwidth 64000
C. RouterA(config-if)#clock rate 64
D. RouterA(config-if)#clock rate 64000
Explanation:
The clock rate command is two words, and the speed of the line is in bps.
25. Which one of the following is true regarding VLANs?
A. Two VLANs are configured by default on all Cisco switches.
B. VLANs only work if you have a complete Cisco switched internetwork. No off-brand switches are allowed.
C. You should not have more than 10 switches in the same VTP domain.
D. VTP is used to send VLAN information to switches in a configured VTP domain.
Explanation:
Switches do not propagate VLAN information by default; you must configure the VTP domain. VLAN Trunking Protocol (VTP) is used to propagate VLAN information across a trunk link
26.
What does a VLAN do?
A. Acts as the fastest port to all servers.
B. Provides multiple collision domains on one switch port.
C. Breaks up broadcast domains in a layer 2 switch internetwork.
D. Provides multiple broadcast domains within a single collision domain.
Explanation:
VLANs break up broadcast domains at layer 2.
27. What is the main reason the OSI model was created?
A. To create a layered model larger than the DoD model.
B. So application developers can change only one layer's protocols at a time.
C. So different networks could communicate.
D. So Cisco could use the model.
Explanation:
The primary reason the OSI model was created was so that different networks could inter-operate.
28. How many collision domains are created when you segment a network with a 12-port switch?
A. 1
B. 2
C. 5
D. 12
Explanation:
Layer 2 switching creates individual collision domains.
29. What command will display the line, protocol, DLCI, and LMI information of an interface?
A. sh pvc
B. show interface
C. show frame-relay pvc
D. show run
Explanation:
The show interface command shows the line, protocol, DLCI, and LMI information of an interface.
30. Which protocol does Ping use?
A. TCP
B. ARP
C. ICMP
D. BootP
Explanation:
ICMP is the protocol at the Network layer that is used to send echo requests and replies
31. Which command is used to upgrade an IOS on a Cisco router?
A. copy tftp run
B. copy tftp start
C. config net
D. copy tftp flash
Explanation:
The copy tftp flash command places a new file in flash memory, which is the default location for the Cisco IOS in Cisco routers.
32. If you wanted to delete the configuration stored in NVRAM, what would you type?
A. erase startup
B. erase nvram
C. delete nvram
D. erase running
Explanation:
The command erase startup-config deletes the configuration stored in NVRAM.
33. What protocols are used to configure trunking on a switch?
VLAN Trunking Protocol
VLAN
802.1Q
ISL
A. 1 and 2
B. 3 and 4
C. 1 only
D. 2 only
Explanation:
VTP is not right because it has nothing to do with trunking except that it sends VLAN information across a trunk link. 802.1Q and ISL are used to configure trunking on a port
34) Which are the types of servers?
a) Proxy server
b) Application Server
c) Cloud Server
d) Dedicated Server
e) All
35) Which of the following application layer networking protocol manages the network devices and applications?
a) SNMP
b) ARP
c) FTP
d) HTTP
36) Identify the odd one out of the following terms stated below:
a) Hypertext
b) FTP
c) Segmentation
d) Internet
37)Which of the following are the different types of networks around you?
a) LAN
b) WAN
c) MAN
d) All
38) ……………… is a software utility used in IMCP to test network connection latency.
a) SNMP
b) PING
c) Orion
d) Head geek
39) Which of the following is a domain resolution protocol that translates the web address into numeric IP address ?
a) IP
b) TCP
c) DNS
d) None
40) Which TCP port is used by Telnet to connect the server applications?
a) Port 23
b) Port 43
c) Port 33
d) Port 50
41) Identify the odd one out of the following terms stated below:
a) Virus
b) Identity theft
c) Hackers
d) Spam
42) An OSI model comprises of ………………. Layer.
a) Seven
b) Eight
c) Six
d) Five
43) Which of the following protocol sends electronic mail to the receiver’s end?
a) FTP
b) SMTP
c) POP3
d) Both (a) & (c)
e) Both (a) & (b)
44)………………….. is used for booting in the diskless workstations.
a) ARP
b) SMTP
c) RARP
d) FTP
45)How many classes are there in IPV4 address Space?
a) Four
b) Six
c) Five
d) Seven
46) Which of the following devices are used to transfer data between LAN?
a) Repeaters
b) Hub
c) Routers
d) Bridges
47) Which of the following layers is not a part of the OSI model?
a) Application layer
b) Transport layer
c) Network Layer
d) Internet Layer
48) Which of the following allows a two-way connection oriented communication over a network?
a) TCP
B) UDP
c) Both (a) & (b)
d) none
49)Which of the following are the various types of guided media?
a) Twisted cable
b) Fiber option
c) Co-axial cable
d) All
50) Which of the following layers of OSI model carry out logical- physical address mapping?
a) Networking layer
b) Transport layer
c) DLL
d) Application layer
51) The division of an IP networking into two or more logical sub-networks is known as ……………..
a) Sub-networking
b) super networking
c) routing
d) packet-switching
52) A subnet firewall configuration , which secures LAN from the untrusted external network, is called ……………….
a) MAN
b) DMZ
c) LAN
d) WAN
53) How many types of IP addresses are there?
a) Two
b) Three
c) One
d) Four
54)Which of the following are part of a data communication system?
a) Sender, receiver
b) Transmission medium
c) Message, protocol
d) All
55)The hardware interface between a computer and network is known as ……………..
a) NIC
b) router
c) mesh
d) protocol
56)Which of the following TCP/IP layer contain IP and ARP protocol?
a) Application layer
b) Transport layer
c) Internet layer
d) Network access layer
57) Which of the following layers is a part of the TCP/IP internetworking model?
a) Internet Layer
b) Transport layer
c) Application Layer
d) Network access layer
e) All
TCP/IP
58. Which of the following services use TCP?
DHCP
SMTP
HTTP
TFTP
FTP
A. 1 and 2
B. 2, 3 and 5
C. 1, 2 and 4
D. 1, 3 and 4
Explanation:
SMTP, HTTP and FTP use TCP.
59. What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?
A. Application
B. Host-to-Host
C. Internet
D. Network Access
Explanation:
The four layers of the TCP/IP stack (also called the DoD model) are Application/Process, Host-to-Host, Internet, and Network Access. The Host-to-Host layer is equivalent to the Transport layer of the OSI model.
60. Which of the following describe the DHCP Discover message?
It uses FF:FF:FF:FF:FF:FF as a layer 2 broadcast.
It uses UDP as the Transport layer protocol.
It uses TCP as the Transport layer protocol.
It does not use a layer 2 destination address.
A. 1 only
B. 1 and 2
C. 3 and 4
D. 4 only
Explanation:
A client that sends out a DHCP Discover message in order to receive an IP address sends out a broadcast at both layer 2 and layer 3. The layer 2 broadcast is all Fs in hex, or FF:FF:FF:FF:FF:FF. The layer 3 broadcast is 255.255.255.255, which means all networks and all hosts. DHCP is connectionless, which means it uses User Datagram Protocol (UDP) at the Transport layer, also called the Host-to-Host layer.
61. You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?
A. SMTP
B. SNMP
C. DHCP
D. ARP
Explanation:
Dynamic Host Configuration Protocol (DHCP) is used to provide IP information to hosts on your network. DHCP can provide a lot of information, but the most common is IP address, subnet mask, default gateway, and DNS information.
62. Which of the following is private IP address?
A. 12.0.0.1
B. 168.172.19.39
C. 172.15.14.36
D. 192.168.24.43
Explanation:
Class A private address range is 10.0.0.0 through 10.255.255.255. Class B private address range is 172.16.0.0 through 172.31.255.255, and Class C private address range is 192.168.0.0 through 192.168.255.255
63. Which of the following allows a router to respond to an ARP request that is intended for a remote host?
A. Gateway DP
B. Reverse ARP (RARP)
C. Proxy ARP
D. Inverse ARP (IARP)
Explanation:
Proxy ARP can help machines on a subnet reach remote subnets without configuring routing or a default gateway.
64. The DoD model (also called the TCP/IP stack) has four layers. Which layer of the DoD model is equivalent to the Network layer of the OSI model?
A. Application
B. Host-to-Host
C. Internet
D. Network Access
Explanation:
The four layers of the DoD model are Application/Process, Host-to-Host, Internet, and Network Access. The Internet layer is equivalent to the Network layer of the OSI model.
65. Which of the following services use UDP?
DHCP
SMTP
SNMP
FTP
HTTP
TFTP
A. 1, 3 and 6
B. 2 and 4
C. 1, 2 and 4
D. All of the above
Explanation:
DHCP, SNMP, and TFTP use UDP.
66. Which class of IP address provides a maximum of only 254 host addresses per network ID?
A. Class A
B. Class B
C. Class C
D. Class D
Explanation:
A Class C network address has only 8 bits for defining hosts: 28 - 2 = 254.
67. If you use either Telnet or FTP, which is the highest layer you are using to transmit data?
A. Application
B. Presentation
C. Session
D. Transport
Explanation:
Both FTP and Telnet use TCP at the Transport layer; however, they both are Application layer protocols, so the Application layer is the best answer
68. Which of the following is the decimal and hexadecimal equivalents of the binary number 10011101?
A. 155, 0x9B
B. 157, 0x9D
C. 159, 0x9F
D. 185, 0xB9
Explanation:
To turn a binary number into decimal, you just have to add the values of each bit that is a 1. The values of 10011101 are 128, 16, 8, 4, and 1. 128 + 16 + 8 + 4 + 1 = 157.
Hexadecimal is a base-16 number system. The values of hexadecimal are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F-16 characters total, from which to create all the numbers you'll ever need. So, if 1001 in binary is 9, then the hexadecimal equivalent is 9. Since we then have 1101, which is 13 in binary, the hexadecimal answer is D and the complete hexadecimal answer is 0x9D.
69. Which statements are true regarding ICMP packets?
They acknowledge receipt of a TCP segment.
They guarantee datagram delivery.
They can provide hosts with information about network problems.
They are encapsulated within IP datagrams.
A. 1 only
B. 2 and 3
C. 3 and 4
D. 2, 3 and 4
Explanation:
Internet Control Message Protocol (ICMP) is used to send error messages through the network, but they do not work alone. Every segment or ICMP payload must be encapsulated within an IP datagram (or packet).
70. Which of the following are layers in the TCP/IP model?
Application
Session
Transport
Internet
Data Link
Physical
A. 1 and 2
B. 1, 3 and 4
C. 2, 3 and 5
D. 3, 4 and 5
Explanation:
This seems like a hard question at first because it doesn't make sense. The listed answers are from the OSI model and the question asked about the TCP/IP protocol stack (DoD model). However, let's just look for what is wrong. First, the Session layer is not in the TCP/IP model; neither are the Data Link and Physical layers. This leaves us with the Transport layer (Host-to-Host in the DoD model), Internet layer (Network layer in the OSI), and Application layer (Application/Process in the DoD).
71. Which layer 4 protocol is used for a Telnet connection?
A. IP
B. TCP
C. TCP/IP
D. UDP
Explanation:
Although Telnet does use TCP and IP (TCP/IP), the question specifically asks about layer 4, and IP works at layer 3. Telnet uses TCP at layer 4.
72. Which statements are true regarding ICMP packets?
ICMP guarantees datagram delivery.
ICMP can provide hosts with information about network problems.
ICMP is encapsulated within IP datagrams.
ICMP is encapsulated within UDP datagrams.
A. 1 only
B. 2 and 3
C. 1 and 4
D. All of the above
Explanation:
ICMP is used for diagnostics and destination unreachable messages. ICMP is encapsulated within IP datagrams, and because it is used for diagnostics, it will provide hosts with information about network problems
73. Which of the following are TCP/IP protocols used at the Application layer of the OSI model?
IP
TCP
Telnet
FTP
TFTP
A. 1 and 3
B. 1, 3 and 5
C. 3, 4 and 5
D. All of the above
Explanation:
Telnet, File Transfer Protocol (FTP), and Trivial FTP (TFTP) are all Application layer protocols. IP is a Network layer protocol. Transmission Control Protocol (TCP) is a Transport layer protocol.
74. What protocol is used to find the hardware address of a local device?
A. RARP
B. ARP
C. IP
D. ICMP
Explanation:
Address Resolution Protocol (ARP) is used to find the hardware address from a known IP address.
75. Which of the following protocols uses both TCP and UDP?
A. FTP
B. SMTP
C. Telnet
D. DNS
Explanation:
DNS uses TCP for zone exchanges between servers and UDP when a client is trying to resolve a hostname to an IP address.
76. What is the address range of a Class B network address in binary?
A. 01xxxxxx
B. 0xxxxxxx
C. 10xxxxxx
D. 110xxxxx
Explanation:
The range of a Class B network address is 128-191. This makes our binary range 10xxxxxx.
77. ping command works on which protocol?
- ICMP
- TCP
- IP
- UDP
78. Transport layer of OSI model lies between Network and ___________ layer
- Application
- Data link
- Session
- Presentation
79. Which of the following protocols below work in application layer?
- POP
- PPP
- FTP
- Both a and c
80. What is the port number for HTTP?
- 25
- 80
- 21
- 65
81. IP4 is more commonly used than IPv6.
- True
- False
82. From the options below, which suits best for MODEM?
- a device that modulates an analog carrier signal to encode digital information
- a device that modulates a digital carrier signal to encode analog information
- a device that modulates an analog carrier signal to decode digital information
- a device that modulates a digital carrier signal to decode analog information
83. What is the size of an IPv4 address?
- 64 bit
- 128 bit
- 16 bit
- 32 bit
84. MAC addresses are also known as.
- Hardware address
- Physical address
- both and b above
- IP address
85. A network point that provides entrance into another network is called as ___________
- Node
- Gateway
- Switch
- Router
86. UDP is an unreliable protocol.
- True
- False
87. A stream socket provides _________ communications between a client and server
- One way
- Two way
88. Token Ring is a data link technology for?
- WAN
- MAN
- LAN
- both a and b above
89. Which of the following protocol below are suited for email retrieval?
- POP3
- IMAP
- FTP
- Both a and b above
90. TELNET used _________ protocol for data connection
- TCP
- UDP
- IP
- DHCP
91. 10Base5, 10Base2, 10BaseT are the types of?
- Internet
- LAN
- Ethernet
- Cables
92. The process of assigning IP address for specific times to the various hosts by DHCP is called as _______
- Lend
- sublease
- let
- Lease
93. What is the full form of URL?
- Uniform routing locator
- Uniform Resource locator
- Universal Resource locator
- Uniform router locator
94. __________ is a standard suite of protocols used for packet switching across computer networks.
- x.22
- x.23
- x.25
- x.26
95. What is the full form of CAN?
- Campus Area Network
- Cluster Area Network
- Control Area network
- both a and b
96. Which of the following below is/are capability of ICMP protocol?
- Report package count
- Report network congestion
- Both b and d
- Report availability of remote hosts
97. ARP works on Ethernet networks.
- False
- True
98. ____________ assigns a unique number to each IP network adapter called the MAC address.
- Media Access Control
- Metro Access Control
- Metropolitan Access Control
- Both b and c above
99. Piconets in bluetooth is a minimum of two and a maximum of ____________ Bluetooth peer devices.
- five
- eight
- nine
- four
100. Dynamic addressing doesn’t allow many devices to share limited address space on a network
- True
- False
101. NAT stands for
- network address transformer
- network address translator
- network address translation
- Both b and c above
102. Which of the following is true for secure shell tunneling?
- To set up an SSH tunnel, one configures an SSH client to forward a specified local port
- SSH tunnels provide a means to not bypass firewalls
- All SSH clients support dynamic port forwarding
- Both a and b
103. Which of the following below are secure VPN protocols?
- UDP
- TCP
- SSTP
- Both b and c
104. What is the difference between a switch and a hub?
- Switches operate at physical layer while hubs operate at data link layer
- Switches operate at data link layer while hubs operate at transport layer
- Switches operate at data link layer while hubs operate at physical layer
- Switches operate at transport layer while hubs operate at physical layer
105. When computers in a network listen and receive the signal, it is termed as active topology
- True
- False
106. In 10base2, 10base5, what does 2 and 5 stand for?
- Speed in mbps
- Number of segments
- Length of segment
- Size of segment
107. ___________ is added to data packet for error detection.
- both b and d
- checksum bit
- error bit
- parity bit
108. All IP addresses are divided into network address and host address
- True
- False
109. How can we examine the current routing tables in command prompt?
- using routestart
- using netstart
- using netstat
- either a or b
110. Both ping and tracert are used to find if the computer is in network.
- True
- False
111. What is the difference between ring and bus topology?
- In Ring all nodes are connected with another in a loop while in bus they are connected to a central cable
- In Ring all nodes are connected with another loop while in bus they are connected to a central cable
- In bus all nodes are connected with another in a loop while in star they are connected to a central node
- In Bus all nodes are connected with another loop while in star they are connected to a central cable
112. MAC addressing works in data link layer while IP addressing works in network layer.
- True
- False
NETWORKING MCQ
113. Computer Network is……….
A. Collection of hardware components and computers
B. Interconnected by communication channels
C. Sharing of resources and information
D. All of the Above
113. Protocols are?
A. Agreements on how communication components and DTE's are to communicate
B. Logical communication channels for transferring data
C. Physical communication channels sued for transferring data
D. None of above
114. Two devices are in network if………
A. a process in one device is able to exchange information with a process in another device
B. a process is running on both devices
C. PIDs of the processes running of different devices are same
D. none of the mentioned
115. what is a Firewall in Computer Network?
A. The physical boundary of Network
B. An operating System of Computer Network
C. A system designed to prevent unauthorized access
D. A web browsing Software
116. The IETF standards documents are called………….
A. RFC
B. RCF
C. ID
D. None of the mentioned
117. Which data communication method is used to transmit the data over a serial communication link?
A. Simplex
B. Half-duplex
C. Full duplex
D. All of above
118. Each IP packet must contain
A. Only Source address
B. Only Destination address
C. Source and Destination address
D. Source or Destination address
119. What is the minimum header size of an IP packet?
A. 16 bytes
B. 10 bytes
C. 20 bytes
D. 32 bytes
120. Routing tables of a router keeps track of………..
A. MAC Address Assignments
B. Port Assignments to network devices
C. Distribute IP address to network devices
D. Routes to use for forwarding data to its destination
121. Which of the following is not the External Security Threats?
A. Front-door Threats
B. Back-door Threats
C. Underground Threats
D. Denial of Service (DoS)
122. What is the IP Address range of APIPA?
A. 169.254.0.1 to 169.254.0.254
B. 169.254.0.1 to 169.254.0.255
C. 169.254.0.1 to 169.254.255.254
D. 169.254.0.1 to 169.254.255.255
123. Which of the following is not the possible ways of data exchange?
A. Simplex
B. Multiplex
C. Half-duplex
D. Full-duplex
124. The management of data flow between computers or devices or between nodes in a network is called………..
A. Flow control
B. Data Control
C. Data Management
D. Flow Management
125. What does the port number in a TCP connection specify?
A. It specifies the communication process on the two end systems
B. It specifies the quality of the data & connection
C. It specify the size of data
D. All of the above
126. What is the purpose of the PSH flag in the TCP header?
A. Typically used to indicate end of message
B. Typically used to indicate beginning of message
C. Typically used to push the message
D. Typically used to indicate stop the message
127. Which of the following protocol is/are defined in Transport layer?
A. FTP
B. TCP
C. UDP
D. B & C
128. The meaning of Straight-through Cable is………..
A. Four wire pairs connect to the same pin on each end
B. The cable Which Directly connects Computer to Computer
C. Four wire pairs not twisted with each other
D. The cable which is not twisted
129. What is the size of MAC Address?
A. 16-bits
B. 32-bits
C. 48-bits
D. 64-bits
130. Repeater operates in which layer of the OSI model?
A. Physical layer
B. Data link layer
C. Network layer
D. Transport layer
131. Which of the following layer of OSI model also called end-to-end layer?
A. Presentation layer
B. Network layer
C. Session layer
D. Transport layer
132. Router operates in which layer of OSI Reference Model?
A. Layer 1 (Physical Layer)
B. Layer 3 (Network Layer)
C. Layer 4 (Transport Layer)
D. Layer 7 (Application Layer)
133. ADSL is the abbreviation of……..
A. Asymmetric Dual Subscriber Line
B. Asymmetric Digital System Line
C. Asymmetric Dual System Line
D. Asymmetric Digital Subscriber Line
134. How many layers does OSI Reference Model has?
A. 4
B. 5
C. 6
D. 7
135. Bridge works in which layer of the OSI model?
A. Appliation layer
B. Transport layer
C. Network layer
D. Datalink layer
136. Why IP Protocol is considered as unreliable?
A. A packet may be lost
B. Packets may arrive out of order
C. Duplicate packets may be generated
D. All of the above
137. What is the benefit of the Networking?
A. File Sharing
B. Easier access to Resources
C. Easier Backups
D. All of the Above
138. Which of the following is not the Networking Devices?
A. Gateways
B. Linux
C. Routers
D. Firewalls
139. What is the maximum header size of an IP packet?
A. 32 bytes
B. 64 bytes
C. 30 bytes
D. 60 bytes
140. Which of the following is correct in VLSM?
A. Can have subnets of different sizes
B. Subnets must be in same size
C. No required of subnet
D. All of above
141. DHCP Server provides _____ to the client.
A. Protocol
B. IP Address
C. MAC Address
D. Network Address
142. What is the address size of IPv6 ?
A. 32 bit
B. 64 bit
C. 128 bit
D. 256 bit
143. What is the size of Network bits & Host bits of Class A of IP address?
A. Network bits 7, Host bits 24
B. Network bits 8, Host bits 24
C. Network bits 7, Host bits 23
D. Network bits 8, Host bits 23
144. What is the full form of RAID ?
A. Redundant Array of Independent Disks
B. Redundant Array of Important Disks
C. Random Access of Independent Disks
D. Random Access of Important Disks
145. What do you mean by broadcasting in Networking?
A. It means addressing a packet to all machine
B. It means addressing a packet to some machine
C. It means addressing a packet to a particular machine
D. It means addressing a packet to except a particular machine
146. What is the size of Source and Destination IP address in IP header?
A. 4 bits
B. 8 bits
C. 16 bits
D. 32 bits
147. What is the typical range of Ephemeral ports?
A. 1 to 80
B. 1 to 1024
C. 80 to 8080
D. 1024 to 65535
148. A set of rules that govern all aspects of information communication is called……….
A. Server
B. Internet
C. Protocol
D. OSI Model
149. Controlling access to a network by analyzing the incoming and outgoing packets is called……….
A. IP Filtering
B. Data Filtering
C. Packet Filtering
D. Firewall Filtering
150. DHCP is the abbreviation of………
A. Dynamic Host Control Protocol
B. Dynamic Host Configuration Protocol
C. Dynamic Hyper Control Protocol
D. Dynamic Hyper Configuration Protocol
151. What is the use of Bridge in Network?
A. to connect LANs
B. to separate LANs
C. to control Network Speed
D. All of the above
152. Network congestion occurs……….
A. in case of traffic overloading
B. when a system terminates
C. when connection between two nodes terminates
D. none of the mentioned
153. What is the meaning of Bandwidth in Network?
A. Transmission capacity of a communication channels
B. Connected Computers in the Network
C. Class of IP used in Network
D. None of Above
154. Which of the following is correct regarding Class B Address of IP address………
A. Network bit – 14, Host bit – 16
B. Network bit – 16, Host bit – 14
C. Network bit – 18, Host bit – 16
D. Network bit – 12, Host bit – 14
155. ............provides a connection-oriented reliable service for sending messages………….
A. TCP
B. IP
C. UDP
D. All of the above
156. What does Router do in a network?
A. Forwards a packet to all outgoing links
B. Forwards a packet to the next free outgoing link
C. Determines on which outing link a packet is to be forwarded
D. Forwards a packet to all outgoing links except the originated link
157. What is the use of Ping command?
A. To test a device on the network is reachable
B. To test a hard disk fault
C. To test a bug in a Application
D. To test a Pinter Quality
158. What is the size of Host bits in Class B of IP address?
A. 04
B. 08
C. 16
D. 32
159. Which of the following is correct in CIDR?
A. Class A includes Class B network
B. There are only two networks
C. There are high & low class network
D. There is no concept of class A, B, C networks
160. The processes on each machine that communicate at a given layer are called…………
A. UDP process
B. Intranet process
C. Server technology
D. Peer-peer process
161. Which of the following layer is not network support layer?
A. Transport Layer
B. Network Layers
C. Data link Layer
D. Physical Layer
Computer Networking Objective type Questions and Answers List
162. What is the other types of OLAP apart from ROLAP?
A. HOLAP
B. MOLAP
C. DOLAP
D. Both a and b above
163. A network router joins two _________ together?
A. Computers
B. Switches
C. Networks
D. Gateway
164. Message Oriented Middleware allows general purpose messages to be exchanged in a Client/Server system using message queues.
A. True
B. False
165. Which of the following below is a loop back IP address?
A. 127.0.0.0
B. 127.0.1.1
C. 127.0.1.0
D. 127.0.0.1
166. Ping command works on which protocol?
A. ICMP
B. TCP
C. IP
D. UDP
167. Transport layer of OSI model lies between Network and ___________ layer
A. Application
B. Data link
C. Session
D. Presentation
168. Which of the following protocols below work in application layer?
A. POP
B. PPP
C. FTP
D. Both a and d above
169. What is the port number for HTTP?
A. 25
B. 80
C. 21
D. 65
170. IP4 is more commonly used than IPv6?
A. True
B. False
171. From the options below, which suits best for MODEM?
A. a device that modulates an analog carrier signal to encode digital information
B. a device that modulates a digital carrier signal to encode analog information
C. a device that modulates an analog carrier signal to decode digital information
D. a device that modulates a digital carrier signal to decode analog information
172. WHat is the size of an IP address?
A. 64 bit
B. 128 bit
C. 16 bit
D. 32 bit
173. MAC addresses are also known as?
A. Hardware address
B. Physical address
C. both and b above
D. IP address
174. A network point that provides entrance into another network is called as ___________
A. Node
B. Gateway
C. Switch
D. Router
175. UDP is an unreliabe protocol.
A. True
B. False
176. A stream socket provides _________ communications between a client and server
A. One way
B. Two way
177. Token Ring is a data link technology for ?
A. WAN
B. MAN
C. LAN
D. both a and b above
178. Which of the following protocol below are suited for email retrieval?
A. POP3
B. IMAP
C. FTP
D. Both and b above
179. TELNET used _________ protocol for data connection
A. TCP
B. UDP
C. IP
D. DHCP
180. 10Base5, 10Base2, 10BaseT are types of?
A. Internet
B. LAN
C. Ethernet
D. Cables
181. The process of assigning IP address for specific times to the various hosts by DHCP is called as?
A. Lend
B. sublease
C. let
D. Lease
182. What is the full form of URL?
A. Uniform routing locator
B. Uniform Resource locator
C. Universal Resource locator
D. Uniform router locator
183. __________ is a standard suite of protocols used for packet switching across computer networks.
A. x.22
B. x.23
C. x.25
D. x.26
184. What is the full form of CAN?
A. Campus Area Network
B. Cluster Area Network
C. Control Area network
D. both A and B
185. Which of the following below is/are capability of ICMP protocol?
A. Report package count
B. Report network congestion
C. Both b and d
D. Report availability of remote hosts
186. ARP works on Ethernet networks.
A. False
B. True
187. _______ assigns a unique number to each IP network adapter called the MAC address.
A. Media Access Control
B. Metro Access Control
C. Metropolitan Access Control
D. Both B and C above
188. Piconets in blue tooth a minimum of two and a maximum of ____________ Bluetooth peer devices.
A. five
B. eight
C. nine
D. four
189. Dynamic addressing doesn’t allow many devices to share limited address space on a network
A. True
B. False
190. NAT stands for _____ .
A. network address transformer
B. network address translator
C. network address translation
D. Both B and C above
191. Which of the following is true for secure shell tunneling?
A. To set up an SSH tunnel, one configures an SSH client to forward a specified local port
B. SSH tunnels provide a means to not bypass firewalls
C. All SSH clients support dynamic port forwarding
D. Both A and B
192. Which of the following below are secure VPN protocols?
A. UDP
B. TCP
C. SSTP
D. Both B and C
193. What is the difference between a switch and a hub?
A. Switches operate at physical layer while hubs operate at data link layer
B. Switches operate at data link layer while hubs operate at transport layer
C. Switches operate at data link layer while hubs operate at physical layer
D. Switches operate at transport layer while hubs operate at physical layer
194. When computers in a network listen and receive the signal, it is termed as active toplogy
A. True
B. False
195. In 10base2, 10base5, what does 2 and 5 stand for?
A. Speed in mbps
B. Number of segments
C. Length of segment
D. Size of segment
196. ______is added to data packet for error detection.
A. checksum bit
B. error bit
C. parity bit
197. ALL IP addresses are divided into network address and host address
A. True
B. False
198. How can we examine the current routing tables in command prompt?
A. using routestart
B. using netstart
C. using netstat
D. either a or b
199. Both ping and tracert are used to find If the computer is in network.
A. True
B. False
200. What is the difference between ring and bus topology?
A. In Ring all nodes are connected with another in a loop while in bus they are connected to a central cable
B. In Ring all nodes are connected with another loop while in bus they are connected to a central cable
C. In bus all nodes are connected with another in a loop while in star they are connected to a central node
D. In Bus all nodes are connected with another loop while in star they are connected to a central cable
201. MAC addressing works in data link layer while IP addressing works in network layer.
A. True
B. False
202. A packet whose destination is outside the local TCP/IP network segment is sent to the ____ .
A. File server
B. Default gateway
C. DNS server
D. DHCP server
203. Why was the OSI model developed?
A. manufacturers disliked the TCP/IP protocol suite
B. the rate of data transfer was increasing exponentially
C. standards were needed to allow any two systems to communicate
D. none of the above
204. Which piece of information is not vital for a computer in a TCP/IP network?
A. IP address
B. Default gateway
C. Subnet Mask
D. DNS server
205. The physical layer is concerned with the movement of _______ over the physical medium.
A. programs
B. dialogs
C. protocols
D. Bits
206. Which protocol below operates at the network layer in the OSI model?
A. IP
B. ICMP
C. RARP
D. All of the above
207. In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______.
A. added
B. removed
C. rearranged
D. Modified
208. Session layer of the OSI model provides
A. Data representation
B. Dialog control
C. Remote job execution
D. Creating logical connections
209. IPv6 has _______ -bit addresses.
A. 32
B. 64
C. 128
D. Variable
210. Which one of the following functionalities isn\’t provided by TCP?
A. Flow control
B. Addressing
C. Retransmission of packets as required
D. Proper sequencing of the packets
211. Which of the following can be an Ethernet physical address?
A. 01:02:01:2C:4B
B. 07:01:02:01:2C:4B:2C
C. 07:01:02:01:2C:4B
D. none of the above
212. An IP address contains________ bits ?
A. 8
B. 16
C. 32
D. 64
213. Which routing protocol below is used by exterior routers between the autonomous systems?
A. RIP
B. IGRP
C. OSPF
D. BGP
214. Which of the IP headers decides when the packet should be discarded?
A. Fragment control
B. TTL
C. Checksum
D. Header length
215. Which IP address is reserved for software loop-back?
A. 224.x.x.x
B. 127.x.x.x
C. 0.0.0.0
D. 255.255.255.255
216. What is the network ID for a computer whose IP address is 190.148.64.23?
A. 190
B. 190.148
C. 190.148.64
D. None of the above
217. Which port is reserved for use of the SMTP protocol?
A. 21
B. 23
C. 25
D. 53
218. Which one of the folowings is a connectionless protocol?
A. UDP
B. Ethernet
C. IPX
D. All of the above
219. Which application below uses the UDP protocol?
A. DNS
B. TFTP
C. RIP
D. All of the above
220. Howmany IP addresses can be assigned to hosts in a C-class networksegment with a subnet mask of 255.255.255.192?
A. 62
B. 126
C. 192
D. 254
221. Which of the folowings is not a direct implication of subnet masks in TCP/IP networks?
A. Reduce network traffic
B. Increase network security
C. Assignment of more IP addresses
D. Better network management
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