Computer MCQ Quiz Hub

1. Computer Network is
Collection of hardware components and computers
Interconnected by communication channels
Sharing of resources and information
All of the Above

2. Protocols are? .
Agreements on how communication components and DTE's are to communicate
Logical communication channels for transferring data
Physical communication channels sued for transferring data
None of above

3. Two devices are in network if
a process in one device is able to exchange information with a process in another device
a process is running on both devices
PIDs of the processes running of different devices are same
none of the mentioned

4. what is a Firewall in Computer Network?
The physical boundary of Network
An operating System of Computer Network
A system designed to prevent unauthorized access
A web browsing Software

5. The IETF standards documents are called
RFC
RCF
ID
None of the mentioned

6. Which data communication method is used to transmit the data over a serial communication link?
Simplex
Half-duplex
Full duplex
All of above

7. Each IP packet must contain
Only Source address
Only Destination address
Source and Destination address
Source or Destination address

8. What is the minimum header size of an IP packet?
16 bytes
10 bytes
20 bytes
32 bytes

9. Routing tables of a router keeps track of
MAC Address Assignments
Port Assignments to network devices
Distribute IP address to network devices
Routes to use for forwarding data to its destination

10. Which of the following is not the External Security Threats?
Front-door Threats
Back-door Threats
Underground Threats
Denial of Service (DoS)

11. What is the IP Address range of APIPA?
169.254.0.1 to 169.254.0.254
169.254.0.1 to 169.254.0.255
169.254.0.1 to 169.254.255.254
169.254.0.1 to 169.254.255.255

12. Which of the following is not the possible ways of data exchange?
Simplex
Multiplex
Half-duplex
Full-duplex

13. The management of data flow between computers or devices or between nodes in a network is called
Flow control
Data Control
Data Management
Flow Management

14. What does the port number in a TCP connection specify?
It specifies the communication process on the two end systems
It specifies the quality of the data & connection
It specify the size of data
All of the above

15. What is the purpose of the PSH flag in the TCP header?
Typically used to indicate end of message
Typically used to indicate beginning of message
Typically used to push the message
All of the above

16. Which of the following protocol is/are defined in Transport layer?
FTP
TCP
UDP
B & C

17. The meaning of Straight-through Cable is
Four wire pairs connect to the same pin on each end
The cable Which Directly connects Computer to Computer
Four wire pairs not twisted with each other
The cable which is not twisted

18. What is the size of MAC Address?
16-bits
32-bits
48-bits
64-bits

19. Repeater operates in which layer of the OSI model?
Physical layer
Data link layer
Network layer
Transport layer

20. Which of the following layer of OSI model also called end-to-end layer?
Presentation layer
Network layer
Session lay
Transport layer

21. Router operates in which layer of OSI Reference Model?
Layer 1 (Physical Layer)
Layer 3 (Network Layer)
Layer 4 (Transport Layer)
Layer 7 (Application Layer)

22. ADSL is the abbreviation of
Asymmetric Dual Subscriber Line
Asymmetric Digital System Line
Asymmetric Dual System Line
Asymmetric Digital Subscriber Line

23. How many layers does OSI Reference Model has?
4
5
6
7

24. Bridge works in which layer of the OSI model?
Appliation layer
Transport layer
Network layer
Datalink layer

25. Why IP Protocol is considered as unreliable?
A packet may be lost
Packets may arrive out of order
Duplicate packets may be generated
All of the above

26. What is the benefit of the Networking? .
File Sharing
Easier access to Resources
Easier Backups
All of the Above

27. Which of the following is not the Networking Devices?
Gateways
Linux
Routers
Firewalls

28. What is the maximum header size of an IP packet?
32 bytes
64 bytes
30 bytes
60 bytes

29. Which of the following is correct in VLSM?
Can have subnets of different sizes
Subnets must be in same size
No required of subnet
All of above

30. DHCP Server provides _____ to the client.
Protocol
IP Address
MAC Address
Network Address

31. What is the address size of IPv6 ?
32 bit
64 bit
128 bit
256 bit

32. What is the size of Network bits & Host bits of Class A of IP address?
Network bits 7, Host bits 24
Network bits 8, Host bits 24
Network bits 7, Host bits 23
Network bits 8, Host bits 23

33. What is the full form of RAID ?
Redundant Array of Independent Disks
Redundant Array of Important Disks
Random Access of Independent Disks
Random Access of Important Disks

34. What do you mean by broadcasting in Networking?.
It means addressing a packet to all machine
It means addressing a packet to some machine
It means addressing a packet to a particular machine
It means addressing a packet to except a particular machine

35. What is the size of Source and Destination IP address in IP header?
4 bits
8 bits
16 bits
32 bits

36. What is the typical range of Ephemeral ports?
1 to 80
1 to 1024
80 to 8080
1024 to 65535

37. A set of rules that govern all aspects of information communication is called
Server
Internet
Protocol
OSI Model

38. Controlling access to a network by analyzing the incoming and outgoing packets is called
IP Filtering
Data Filtering
Packet Filtering
Firewall Filtering

39. DHCP is the abbreviation of
Dynamic Host Control Protocol
Dynamic Host Configuration Protocol
Dynamic Hyper Control Protocol
Dynamic Hyper Configuration Protocol

40. What is the use of Bridge in Network?
to connect LANs
to separate LANs
to control Network Speed
All of the above

41. Network congestion occurs
in case of traffic overloading
when a system terminates
when connection between two nodes terminates
none of the mentioned

42. What is the meaning of Bandwidth in Network?
Transmission capacity of a communication channels
Connected Computers in the Network
Class of IP used in Network
None of Above

43. Which of the following is correct regarding Class B Address of IP address
Network bit – 14, Host bit – 16
Network bit – 16, Host bit – 14
Network bit – 18, Host bit – 16
Network bit – 12, Host bit – 14

44. provides a connection-oriented reliable service for sending messages
TCP
IP
UDP
All of the above

45. What does Router do in a network?
Forwards a packet to all outgoing links
Forwards a packet to the next free outgoing link
Determines on which outing link a packet is to be forwarded
Forwards a packet to all outgoing links except the originated link

46. What is the use of Ping command? .
To test a device on the network is reachable
To test a hard disk fault
To test a bug in a Application
To test a Pinter Quality

47. What is the size of Host bits in Class B of IP address?
4
8
16
32

48. Which of the following is correct in CIDR?
Class A includes Class B network
There are only two networks
There are high & low class network
There is no concept of class A, B, C networks

49. The processes on each machine that communicate at a given layer are called .
UDP process
Intranet process
Server technology
Peer-peer process

50. Which of the following layer is not network support layer?
Transport Layer
Network Layers
Data link Layer
Physical Layer