Multiple Choice Questions of Computer Networking
3-1. 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
3-2. What is the minimum header size of an IP packet?
A. 16 bytes
B. 10 bytes
C. 20 bytes
D. 32 bytes
3-3. Which of following provides reliable communication?
A. TCP
B. IP
C. UDP
D. All of the above
3-4. What is the address size of IPv6 ?
A. 32 bit
B. 64 bit
C. 128 bit
D. 256 bit
3-5. 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
3-6. 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
3-7. The Internet is an example of
A. Cell switched network
B. circuit switched network
C. Packet switched network
D. All of above
3-8. What does protocol defines?
A. Protocol defines what data is communicated.
B. Protocol defines how data is communicated.
C. Protocol defines when data is communicated.
D. All of above
3-9. What is the uses of subnetting?
A. It divides one large network into several smaller ones
B. It divides network into network classes
C. It speeds up the speed of network
D. None of above
3-10. Repeater operates in which layer of the OSI model?
A. Physical layer
B. Data link layer
C. Network layer
D. Transport layer
Click Here for Answers
1 – D / 2 – C / 3 – A / 4 – C / 5 – A / 6 – C / 7 – C / 8 – D / 9 – A / 10 – A
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At data link layer error detection is achieved by
- Cyclic Redundancy Code
- Hamming codes
- Bit stuffing
- Equalization
Answer: Option A
1. Name of the topology in which there are bidirectional links between each possible nodes
- Ring
- Mesh
- Star
- Tree
Answer: Option B
2. Videotax is combination of
- communication
- television
- computer technology
- all of above
Answer: Option D
5. X.25 standard specifies
- technique for start-stop data
- technique for dial access
- DTE/DCE interface
- data bit rate
Answer: Option C
6. At data link layer error detection is achieved by
- Cyclic Redundancy Code
- Hamming codes
- Bit stuffing
- Equalization
Ans: Cyclic Redundancy Code
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Very Important Networking Questions for Competitive exam.
1. IPV 4 address is –
a. 16 bit b.32 bit
c. 64 bit d. None
2. The last address of IP address represent -
a. Unicast address b. Network address
c. Broadcast address d. None
3. How many Layers in OSI model?
a. 6 b. 5 c. 7 d. 8
4. How many Layers in TCP/IP model?
a. 5 b. 6 c. 3 d. 4
5. Which of the following is not in OSI mode?
a. Physical layer b. Internet layer
c. Transport layer d. None
6. Each IP packet must contain -
a. Only Source Address b. Only Destination Address
b. Source and Destination Address d. None of these
7. What does Router do in Network?
a. Forwards a packet to all outgoing links
b. Forwards a packet to the next free outgoing link
c. Determines on which outgoing link a packet is to be forwarded
d. None of these
8. In a client/server model, a client program –
a. Asks for information b. provides information and files
c. Distributes data files to other computers
d. None of these
9. Which of the following is used to transfer files?
a. HTTP b. HTML
c. FTP d. None of these
10. An organization is granted a block; one address is 2.2.2.64/20. The organization needs 10 subnets. What is the subnet prefix length?
a. /20 b. /24
c. /23 d. None of these
11. DHCP is the abbreviation of –
a. Dynamic Host Control Protocol
b. Dynamic Host Configuration Protocol
c. Dynamic Hyper Control Protocol
d. None
12. VSAT Stand for
a. Very Swift Automatic Terminal
b. Very Standard Automatic Test
c. Very Small Aperture Terminal
d. Very Static Aligned Terminal
13. ATM Stand for
a. Alternative Teller Machine b. Automatic Transfer Money
c. Automated Teller Machine d. All Time Money
14. Which year used in first Internet?
a. 1987 b. 1969
c. 1971 d. 1975
15. …… provides a connection- oriented reliable service for sending
message.
a. TCP b. IP
c. UDP d. None of these
16. Bridge works in which layer of the OSI model?
a. Application b. Transport layer
c. Data link layer d. None
17. Which of the following protocol is not used is the Internet?
a. Telnet b. WIRL
c. Gopher d. None
18. How long is an IPV 6 address?
a. 32 bits b. 128 bits
c. 64 bits d. None of these above
19. Which of the following services does not normally use TCP?
a. DNS b. HTTP
c. FTP d. None
20. To cheek to see of the Web server you are trying to reach is available or is down, which command lineutility should you use?
a. PING b. ICS
c. Telnet d. None
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