50+ Most Asking Computer Networking Questions with_PDF Set-3___Computer Networking
Multiple Choice Questions
(Networking)
Set-3
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
2.
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
3. IPV4 Address is
A. 8 bit
B. 16 bit
C. 32 bit
D. 64 bit
4. DNS is the abbreviation of
A. Dynamic Name System
B. Dynamic Network System
C. Domain Name System
D. Domain Network Service
5. 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
6. 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
7.
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
8. 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)
9.
Each IP packet must contain
A. Only Source address
B. Only Destination
address
C. Source and Destination address
D. Source or Destination
address
10. Bridge works in which layer of the OSI model?
A. Appliation layer
B. Transport layer
C. Network layer
D. Datalink layer
11. _______ provides a connection-oriented reliable service
for sending messages
A. TCP
B. IP
C. UDP
D. All of the above
12. Which layers of the OSI model are host-to-host layers?
A. Transport, Session, Persentation, Application
B. Network, Transport,
Session, Presentation
C. Datalink, Network,
Transport, Session
D. Physical, Datalink,
Network, Transport
13. Which of the following IP address class is Multicast
A. Class A
B. Class B
C. Class C
D. Class D
14. 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
15. The last address of IP address represents
A. Unicast address
B. Network address
C. Broadcast address
D. None of above
16. How many bits are there in the Ethernet address?
A. 64 bits
B. 48 bits
C. 32 bits
D. 16 bits
17. How many layers are in the TCP/IP model?
A. 4 layers
B. 5 layers
C. 6 layers
D. 7 layers
18. 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
19. 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
20. What is the minimum header size of an IP packet?
A. 16 bytes
B. 10 bytes
C. 20 bytes
D. 32 bytes
21. Which of following provides reliable communication?
A. TCP
B. IP
C. UDP
D. All of the above
22. What is the address size of IPv6 ?
A. 32 bit
B. 64 bit
C. 128 bit
D. 256 bit
23. 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
24. 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
25. The Internet is an example of
A. Cell switched network
B. circuit switched
network
C. Packet switched network
D. All of above
26. 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
27. 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
28. Repeater operates in which layer of the OSI model?
A. Physical layer
B. Data link layer
C. Network layer
D. Transport layer
29. What is the benefit of the Networking?
A. File Sharing
B. Easier access to
Resources
C. Easier Backups
D. All of the Above
30. Which of the following is not the Networking Devices?
A. Gateways
B. Linux
C. Routers
D. Firewalls
31. What is the size of MAC Address?
A. 16-bits
B. 32-bits
C. 48-bits
D. 64-bits
32. Which of the following can be Software?
A. Routers
B. Firewalls
C. Gateway
D. Modems
33. 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
34. MAC Address is the example of
A. Transport Layer
B. Data Link Layer
C. Application Layer
D. Physical Layer
35. 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
36. Layer-2 Switch is also called
A. Multiport Hub
B. Multiport Switch
C. Multiport Bridge
D. Multiport NIC
37. Difference between T568A and T568B is
A. Difference in wire
color
B. Difference in number
of wires
C. Just different length
of wires
D. Just different manufacturer standards
38. 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
39. 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)
40. What is the Demilitarized Zone?
A. The area between firewall & connection to
an external network
B. The area between ISP
to Military area
C. The area surrounded
by secured servers
D. The area
surrounded by the Military
41. 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
42. What is the maximum header size of an IP packet?
A. 32 bytes
B. 64 bytes
C. 30 bytes
D. 60 bytes
43. What is the size of Host bits in Class B of IP address?
A. 04
B. 08
C. 16
D. 32
44. What is the usable size of Network bits in Class B of IP
address?
A. 04
B. 08
C. 14
D. 16
45. In which type of RAID, data is mirrored between two
disks.
A. RAID 0
B. RAID 1
C. RAID 2
D. RAID 3
46. 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
47. Which of the following is/are Protocols of Application?
A. FTP
B. DNS
C. Telnet
D. All of above
48. Which of the following protocol is/are defined in
Transport layer?
A. FTP
B. TCP
C. UDP
D. B & C
49. 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
50. 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
51. 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
52. The class-based addressing is also known as
A. Modern Model
B. Classful Model
C. Classless Model
D. Heterogeneous Model
53. 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
54. 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
55. Which of the following is reliable communication?
A. TCP
B. IP
C. UPD
D. All of them
56. What is the typical range of Ephemeral ports?
A. 1 to 80
B. 1 to 1024
C. 80 to 8080
D. 1024 to 65535
57. 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
58. What is the natural mask for a class C Network?
A. 255.255.255.1
B. 255.255.255.0
C. 255.255.255.254
D. 255.255.255.255
