Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Multiple Choice Questions
Q821: Classful IP addresses are ______ because the class can be computed from the address itself.
- A: Self-identifying
- B: Encrypted
- C: Random
- D: Fixed
View Answer
A
Q822: Fill in the blank: Dotted decimal notation expresses 32-bit binary IP addresses in ______ separated by dots.
- A: Decimal
- B: Hexadecimal
- C: Binary
- D: Octal
View Answer
A
Q823: Fill in the blank: In class B addresses, the last ______ octets are used for the host.
- A: One
- B: Two
- C: Three
- D: Four
View Answer
B
Q824: The network prefix is obtained from the ______.
- A: ISP
- B: Network administrator
- C: Subnet mask
- D: Address class
View Answer
D
Q825: What problem did subnet addressing and classless addressing solve?
- A: Exhaustion of IP addresses
- B: Too many ISPs
- C: Slow network speeds
- D: Incorrect IP routing
View Answer
A
Q826: Which two mechanisms were invented to overcome the limitations of classful addressing?
- A: Subnet addressing and routing
- B: Classless addressing and DNS
- C: Subnet addressing and classless addressing
- D: NAT and DHCP
View Answer
C
Q827: What does a subnet mask specify in IP addressing?
- A: The boundary between prefix and suffix
- B: The IP version
- C: The subnet size
- D: The host ID
View Answer
A
Q828: What is another name for the subnet mask?
- A: Address mask
- B: Network mask
- C: Default gateway
- D: Host mask
View Answer
A
Q829: Given a destination address D and address mask M, the network prefix A is calculated as:
- A: A = D + M
- B: A = D - M
- C: A = D & M
- D: A = D / M
View Answer
C
Q830: What is the dotted decimal notation for the binary mask 11111111 11111111 00000000 00000000?
- A: 255.255.255.0
- B: 255.255.0.0
- C: 255.0.0.0
- D: 255.0.255.0
View Answer
B