FREE COMPUTER SCIENCE MCQs by General knowledge Solutions
FREE COMPUTER SCIENCE MCQs by General knowledge Solutions
1. 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
Answer as A
2. MAC Address is the example of
A. Transport Layer
B. Data Link Layer
C. Application Layer
D. Physical Layer
Answer as B
3. 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
Answer as D
4. Layer-2 Switch is also called
A. Multiport Hub
B. Multiport Switch
C. Multiport Bridge
D. Multiport NIC
Answer as C
5. 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
Answer as D
6. 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
Answer as A
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
Answer as A
2. MAC Address is the example of
A. Transport Layer
B. Data Link Layer
C. Application Layer
D. Physical Layer
Answer as B
3. 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
Answer as D
4. Layer-2 Switch is also called
A. Multiport Hub
B. Multiport Switch
C. Multiport Bridge
D. Multiport NIC
Answer as C
5. 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
Answer as D
6. 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
Answer as A
7. 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)
Answer as C
8. 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
Answer as A
9. 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
Answer as A
10. What is the maximum header size of an IP packet?
A. 32 bytes
B. 64 bytes
C. 30 bytes
D. 60 bytes
Answer as D
11. What is the size of Host bits in Class B of IP address?
A. 04
B. 08
C. 16
D. 32
Answer as C
12. What is the usable size of Network bits in Class B of IP address?
A. 04
B. 08
C. 14
D. 16
Answer as C
13. In which type of RAID, data is mirrored between two disks.
A. RAID 0
B. RAID 1
C. RAID 2
D. RAID 3
Answer as B
14. 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
Answer as A
15. Which of the following is/are Protocols of Application?
A. FTP
B. DNS
C. Telnet
D. All of above
Answer as D
16. Which of the following protocol is/are defined in Transport layer?
A. FTP
B. TCP
C. UDP
D. B & C
Answer as D
A. Front-door Threats
B. Back-door Threats
C. Underground Threats
D. Denial of Service (DoS)
Answer as C
8. 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
Answer as A
9. 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
Answer as A
10. What is the maximum header size of an IP packet?
A. 32 bytes
B. 64 bytes
C. 30 bytes
D. 60 bytes
Answer as D
11. What is the size of Host bits in Class B of IP address?
A. 04
B. 08
C. 16
D. 32
Answer as C
12. What is the usable size of Network bits in Class B of IP address?
A. 04
B. 08
C. 14
D. 16
Answer as C
13. In which type of RAID, data is mirrored between two disks.
A. RAID 0
B. RAID 1
C. RAID 2
D. RAID 3
Answer as B
14. 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
Answer as A
15. Which of the following is/are Protocols of Application?
A. FTP
B. DNS
C. Telnet
D. All of above
Answer as D
16. Which of the following protocol is/are defined in Transport layer?
A. FTP
B. TCP
C. UDP
D. B & C
Answer as D
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
17. 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
Answer as C
18. 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
Answer as A
19. The class-based addressing is also known as
A. Modern Model
B. Classful Model
C. Classless Model
D. Heterogeneous Model
Answer as A
20. 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
Answer as D
21. 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
Answer as D
22. Which of the following is reliable communication?
A. TCP
B. IP
C. UPD
D. All of them
Answer as A
23. What is the typical range of Ephemeral ports?
A. 1 to 80
B. 1 to 1024
C. 80 to 8080
D. 1024 to 65535
Answer as D
24.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
Answer as A
25. 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
Answer as B
17. 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
Answer as C
18. 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
Answer as A
19. The class-based addressing is also known as
A. Modern Model
B. Classful Model
C. Classless Model
D. Heterogeneous Model
Answer as A
20. 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
Answer as D
21. 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
Answer as D
22. Which of the following is reliable communication?
A. TCP
B. IP
C. UPD
D. All of them
Answer as A
23. What is the typical range of Ephemeral ports?
A. 1 to 80
B. 1 to 1024
C. 80 to 8080
D. 1024 to 65535
Answer as D
24.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
Answer as A
25. 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
Answer as B
26. When collection of various computers seems a single
coherent system to its client, then it is called a) computer network
b) distributed system
c) both (a) and (b)
d) none of them
Answer: as b.
27. 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 them
Answer as a
28. Which one of the following computer network is built on the top of another network?
a) prior network
b) chief network
c) prime network
d) overlay network
Answer:d Explanation:None.
29. In computer network nodes are
a) the computer that originates the data
b) the computer that routes the data
c) the computer that terminates the data
d) all of them
30. Communication channel is shared by all the machines on the network in
a) broadcast network
b) unicast network
c) multicast network
d) none of them
Answer:a Explanation:None.
b) distributed system
c) both (a) and (b)
d) none of them
Answer: as b.
27. 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 them
Answer as a
28. Which one of the following computer network is built on the top of another network?
a) prior network
b) chief network
c) prime network
d) overlay network
Answer:d Explanation:None.
29. In computer network nodes are
a) the computer that originates the data
b) the computer that routes the data
c) the computer that terminates the data
d) all of them
30. Communication channel is shared by all the machines on the network in
a) broadcast network
b) unicast network
c) multicast network
d) none of them
Answer:a Explanation:None.
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