1.Computer network is

a. Collection of hardware and software

b. connected by  Software

c. Sharing of resources not information

d. Collection of hardware

Correct Answer: a

2.What is a Firewall in computer network

a. A system designed to prevent unauthorized access

b. An operating system of computer network

c. The physical boundary of network

d. A web browsing software

Correct Answer: a

3.How many layers does OSI reference model has?

a. 7

b. 5

c. 6

d. 4

Correct Answer: a

4.DHCP is the abbreviation of

a. Dynamic Hyper Control Protocol

b. Dynamic Hyper Configuration Protocol

c. Dynamic Host Control Protocol

d. Dynamic Host Configuration Protocol

Correct Answer: c

5.IPv4 address is

a. 32 bit

b. 16 bit

c. 8 bit

d. 64 bit

Correct Answer: a

6.DNS is the abbreviation of

a. Domain Network Service

b. Domain Name System

c. Dynamic Network System

d. Dynamic Name System

Correct Answer: b

7.What is the meaning of Bandwidth in Network

a. Connected computers in the network

b. Class of IP used in Network

c. None of the above

d. Transmission capacity of a communication channels

Correct Answer: d

8.DSL stands for

a. Digital System Line

b. Digital Subscriber Line

c. Dual Subscriber Line

d. Dual System Line

Correct Answer: b

9.ADSL stands for

a. Asymmetric Dual Subscriber Line

b. Asymmetric Digital Subscriber Line

c. Asymmetric Digital System Line

d. Asymmetric Dual System Line

Correct Answer: b

10.SMTP stands for

a. Simply Mail Transferring Protocol

b. Simple Mail Transferring Protocol

c. Simply Mail Transfer Protocol

d. Simple Mail Transfer Protocol

Correct Answer: c

11.Routers operates in which layer of OSI model

a. Layer 4 (Transport Layer)

b. Layer 7 (Application Layer)

c. Layer 3 (Physical Layer)

d. Layer 1 (Network Layer)

Correct Answer: c

12.TCP/IP stands for

a. Translation Control Protocol/Internetworking Protocol

b. Transmission Control Protocol/Internetworking Protocol

c. Translation Control Protocol/Internet Protocol

d. Transmission control protocol/Internet Protocol

Correct Answer: d

13.Each IP packet must contain

a. Source or Destination Address

b. Only Source Address

c. Source and Destination Address

d. Only Destination Address

Correct Answer: c

14.Bridge works in which layer of OSI model

a. Application layer

b. Data link layer

c. Transport layer

d. Network layer

Correct Answer: b

15._________ provides a connection oriented reliable service for sending messages

a. IP

b. UDP

c. All of the above

d. TCP

Correct Answer: d

16.Which layers of OSI model are host to host layers

a. Network, Transport, Session, Presentation

b. Data link, Network, Transport, Session

c. Physical, Data link, Network, Transport

d. Transport, Session, Presentation, Application

Correct Answer: d

17.How many layers are in the TCP/IP model

a. 4

b. 5

c. 6

d. 7

Correct Answer: a

18.Which layer of OSI model also called end to end layer

a. Network layer

b. Session layer

c. Presentation layer

d. Transport layer

Correct Answer: d

19.Why IP protocol is consider as unreliable

a. A packet may be lost

b. Packets may arrive out of order

c. Duplicate packets may be generated

d. A packet  can be change

Correct Answer: a

20.What is the minimum header size of an IP packet

a. 20 bytes

b. 10 bytes

c. 16 bytes

d. 32 bytes

Correct Answer: a

21.Which of the following provides reliable communication

a. UDP

b. All of the above

c. TCP

d. IP

Correct Answer: c

22.What is the address size of IPv6

a. 128 bit

b. 64 bit

c. 32 bit

d. 256 bit

Correct Answer: a

23.What does a Router do in a network?

a. Forwards a packet to all outgoing links except the originated link

b. Determines on which link a packet is to be forwarded

c. Forwards a packet to the next free outgoing link

d. Forwards a packet to all outgoing links

Correct Answer: b

24.The Internet is an example of

a. Cell switched network

b. All of the above

c. Packet switched network

d. Circuit switched network

Correct Answer: c

25.What does protocol defines?

a. All of given

b. Protocol defines how data is communicated

c. Protocol defines what data is communicated

d. Protocol defines what data is communicated

Correct Answer: a

26.Repeater operates in which layer of the OSI model?

a. Network layer

b. Transport layer

c. Presentation layer

d. Data link layer

Correct Answer: c

27.What is the benefit of Networking

a. backup lost

b. deleted data

c. File sharing

d. dificult access to resources

Correct Answer: c

28.Which of the following is not the networking device?

a. Routers

b. Firewalls

c. Linux

d. Gateways

Correct Answer: c

29.What is the size of MAC address?

a. 48 bits

b. 32 bits

c. 16 bits

d. 64 bits

Correct Answer: a

30.Which of the following can be software?

a. Gateways

b. Modems

c. Firewalls

d. Routers

Correct Answer: c

31.What is the use of Ping command?

a. To test a hard disk fault

b. To test a bug in an application

c. To test printer quality

d. To test a device on the network is reachable

Correct Answer: d

32.MAC Address is the example of

a. Physical layer

b. Data link layer

c. Transport layer

d. Application layer

Correct Answer: b

33.The class based addressing is also known as

a. Heterogeneous model

b. Class-full model

c. Modern model

d. Classless model

Correct Answer: b

34.What is the meaning of broadcasting in networking

a. It means addressing a packet to a particular machine

b. It means addressing a packet to all except a particular machine

c. It means addressing a packet to all machine

d. It means addressing a packet to some machine

Correct Answer: c

35.Which of the following is/are protocol of Application layer?

a. Telsect

b. DNS

c. MAC

d. Telcom

Correct Answer: b

36.Which of the following protocol is/are defined in transport layer


b. UDP

c. DNS

d. TCP

Correct Answer: d

37.Micro wave starts from _______ band and ends on _______ band.





Correct Answer: d

38.Routers are used to connect ___________ networks having __________ protocols.

a. Same, Different

b. Different, Same

c. Same, Same

d. Different, Different

Correct Answer: b

39.Walkie Talkie is an example of _________________.

a. Full duplex

b. Multiplex

c. Half duplex

d. Simplex

Correct Answer: c

40.CRC stands for_________

a. Cyclic Readiness Check

b. Cyclic Redundancy Check

c. Circle Redundancy Correct

d. Critical Redundancy Check

Correct Answer: b

41.Standard analog modems are ____________ devices.

a. Synchronous

b. Asynchronous

c. Serial

d. Parallel

Correct Answer: b

42.Service-Point Addressing is the accountability of__________________ , under OSI model

a. Service Layer

b. Data Link Layer

c. Network Layer

d. Transport Layer

Correct Answer: d

43._________ is used to allow the configuration of a TCP/IP device, like gateway, bridge and switch at startup and generally outdated by __________ Protocol





Correct Answer: b

44.The most reliable as well as the most expensive topology to install is the _______ topology.

a. Ring

b. Bus

c. Mesh

d. Star

Correct Answer: c

45.If want to sent data 1011000101011011, but the data has changed to 1011100001010011, so what is the length of the error?

a. 9 bits

b. 7 bits

c. 3 bits

d. All data is corrupted

Correct Answer: a

46.In bus topology there should be a _________, just to avoid echo back of signals.

a. Terminal

b. Tap

c. End point

d. Terminator

Correct Answer: d

47.Internet Layer of TCP/IP pack data into data packets also known as__________

a. TCP packets

b. Packets

c. IP datagram

d. TCP datagram

Correct Answer: c

48.TFTP stands for_________.

a. Terminal File Transmission Product

b. Terminal File Transmission Protocol

c. Terminate File Transfer Protocol

d. Trivial File Transfer Protocol

Correct Answer: d

49.SMTP stands for

a. Simply Mail Transferring Protocol

b. Simple Mail Transferring Protocol

c. Simple Mail Transfer Protocol

d. Simply Mail Transfer Protocol

Correct Answer: c

50.ANSI stands for

a. American National Standards Internet

b. American National Standards Institute

c. Asian National Standards Internet

d. Asian National Standards Institute

Correct Answer: b