Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Chapter: 29
Q901:
Class A address mask is ________.
A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.255.255
Correct Answer:
A
Chapter: 29
Q902:
To identify a destination network, the network applies the ________ to the destination address.
A. Address mask
B. Subnet mask
C. Prefix
D. Suffix
Correct Answer:
A
Chapter: 29
Q903:
The expression "if ((Mask[i] & D) == Dest[i])" is used to check the ________.
A. Destination network
B. Source IP
C. Subnet
D. Next hop
Correct Answer:
A
Chapter: 29
Q904:
In IP datagram forwarding, the next-hop address is stored in the ________.
A. Routing table
B. IP datagram header
C. Transport header
D. Application header
Correct Answer:
A
Chapter: 29
Q905:
IP provides a ________ delivery service similar to LAN.
A. Guaranteed
B. Best-effort
C. Real-time
D. Secure
Correct Answer:
B
Chapter: 29
Q906:
IP does NOT guarantee prevention of ________.
A. Duplicate datagrams
B. Delayed delivery
C. Out-of-order delivery
D. All of the above
Correct Answer:
D
Chapter: 29
Q907:
The layer responsible for providing reliable delivery on top of IP is the ________.
A. Network
B. Transport
C. Application
D. Data Link
Correct Answer:
B
Chapter: 29
Q908:
IP focuses primarily on ________.
A. Datagram delivery
B. Error correction
C. Reliable transmission
D. Packet ordering
Correct Answer:
A
Chapter: 29
Q909:
The application layer is ________ interested in differentiating delivery problems at intermediate routers.
A. Highly
B. Not
C. Moderately
D. Somewhat
Correct Answer:
B
Chapter: 29
Q910:
The data area in IP datagram is generally ________ than the header area.
A. Smaller
B. Larger
C. Equal
D. None of these
Correct Answer:
B
Chapter: 29
Q911:
Virtual packets are encapsulated inside ________ frames to travel across physical networks.
A. Hardware
B. Software
C. Logical
D. Transport
Correct Answer:
A
Chapter: 29
Q912:
Connectionless service combines multiple physical networks into a single ________.
A. Virtual network
B. Physical network
C. Logical network
D. Subnet
Correct Answer:
A
Chapter: 29
Q913:
Which transport protocol uses connection-oriented data delivery?
A. UDP
B. TCP
C. IP
D. ICMP
Correct Answer:
B
Chapter: 30
Q914:
What does the VERS field in an IP datagram indicate?
A. Header length
B. IP version
C. Total length
D. Service type
Correct Answer:
B
Chapter: 30
Q915:
The H.LEN field in an IP datagram header shows the header length in units of ________.
A. 8-bits
B. 16-bits
C. 32-bits
D. 64-bits
Correct Answer:
C
Chapter: 30
Q916:
Which field in the IP header shows sender’s preference for low latency and high reliability?
A. Version
B. Service Type
C. TTL
D. Fragment Offset
Correct Answer:
B
Chapter: 30
Q917:
TOTAL LENGTH field in an IP datagram represents ________.
A. Length of header only
B. Length of data only
C. Total octets in datagram
D. Number of fragments
Correct Answer:
C
Chapter: 30
Q918:
Which field in the IP datagram header is used to discard datagram after passing through several routers?
A. TTL
B. Fragment Offset
C. IDENT
D. Checksum
Correct Answer:
A
Chapter: 30
Q919:
The IP datagram field used to identify fragments of the original datagram is called ________.
A. FLAGS
B. IDENT
C. TOTAL LENGTH
D. OFFSET
Correct Answer:
B
Chapter: 30
Q920:
What does the HEADER CHECKSUM field in IP datagram contain?
A. 1’s complement sum
B. 2’s complement sum
C. 1’s complement of 1’s complement sum
D. Binary sum
Correct Answer:
C