Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1851: When a node has an IP packet to send, it requires which address of the receiving node?
- A: IP address
- B: Link-layer address
- C: Network address
- D: Port address
View Answer
B
Q1852: Fill in the blank: The IP address of the next node is _______ in moving a frame through a link.
- A: helpful
- B: not helpful
- C: mandatory
- D: optional
View Answer
B
Q1853: Which layer is responsible for translating an IP address to a link-layer address?
- A: Network layer
- B: Transport layer
- C: Link layer
- D: Application layer
View Answer
A
Q1854: What does ARP map?
- A: IP address to Port address
- B: IP address to MAC address
- C: Port address to MAC address
- D: Port address to IP address
View Answer
B
Q1855: Which protocol is used to resolve the link-layer address when an IP address is known?
- A: ARP
- B: HTTP
- C: FTP
- D: SMTP
View Answer
A
Q1856: What is the main purpose of ARP?
- A: To send packets over the Internet
- B: To resolve MAC addresses for IP addresses
- C: To resolve port numbers
- D: To route packets across networks
View Answer
B
Q1857: Fill in the blank: When a node wants to communicate over a link, it must know the _______ address of the next node.
- A: IP
- B: Network
- C: Link-layer
- D: Port
View Answer
C
Q1858: What happens when a node doesn't know the MAC address of the destination IP?
- A: It uses a routing table
- B: It sends an ARP request
- C: It forwards the packet directly to the destination
- D: It drops the packet
View Answer
B
Q1859: Which of the following addresses is necessary for moving a frame through a link?
- A: IP address
- B: Subnet mask
- C: Link-layer address
- D: Port number
View Answer
C
Q1860: Fill in the blank: In ARP, a node sends a _______ to request the MAC address corresponding to an IP address.
- A: ARP request
- B: ARP reply
- C: ARP response
- D: ARP probe
View Answer
A