Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 131
Q1841:
Which of the following is a valid multicast Ethernet address?
A. A3:34:45:11:92:F1
B. A2:34:45:11:92:F1
C. AA:BB:CC:DD:EE:FF
D. 00:00:00:00:00:00
Correct Answer:
B
Chapter: 131
Q1842:
What does a broadcast address in Ethernet look like?
A. All 0s
B. All 1s
C. Starts with FF
D. Second digit is 0
Correct Answer:
B
Chapter: 131
Q1843:
Fill in the blank: The Ethernet broadcast address consists of ______.
A. Only 0s
B. Only Fs
C. Only As
D. Mixed digits
Correct Answer:
B
Chapter: 131
Q1844:
Which of the following is an example of a broadcast Ethernet address?
A. A2:34:45:11:92:F1
B. FF:FF:FF:FF:FF:FF
C. 00:00:00:00:00:00
D. A3:34:45:11:92:F1
Correct Answer:
B
Chapter: 131
Q1845:
What distinguishes a unicast Ethernet address from others?
A. Second digit is 0
B. All digits are same
C. Second digit is odd
D. All digits are F
Correct Answer:
C
Chapter: 131
Q1846:
Fill in the blank: In Ethernet, ______ addresses are meant for communication with a single device.
A. Multicast
B. Broadcast
C. Unicast
D. Group
Correct Answer:
C
Chapter: 131
Q1847:
Which of the following link-layer address types targets multiple specific devices?
A. Unicast
B. Multicast
C. Broadcast
D. Point-to-point
Correct Answer:
B
Chapter: 131
Q1848:
In a link-layer address like A3:34:45:11:92:F1, what does A3 represent?
A. First byte
B. Second byte
C. First hex digit
D. First 2 hex digits
Correct Answer:
D
Chapter: 131
Q1849:
Fill in the blank: ______ addresses are sent to all stations in the LAN.
A. Unicast
B. Multicast
C. Broadcast
D. Point-to-point
Correct Answer:
C
Chapter: 132
Q1850:
What does ARP stand for?
A. Address Reorganization Protocol
B. Address Routing Protocol
C. Address Resolution Protocol
D. Address Routing Process
Correct Answer:
C
Chapter: 132
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
Correct Answer:
B
Chapter: 132
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
Correct Answer:
B
Chapter: 132
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
Correct Answer:
A
Chapter: 132
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
Correct Answer:
B
Chapter: 132
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
Correct Answer:
A
Chapter: 132
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
Correct Answer:
B
Chapter: 132
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
Correct Answer:
C
Chapter: 132
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
Correct Answer:
B
Chapter: 132
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
Correct Answer:
C
Chapter: 132
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
Correct Answer:
A