Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 133
Q1881:
What happens if no ARP reply is received after an ARP request is sent?
A. The request is retried immediately
B. An error is returned
C. No action is taken, and the packet is discarded
D. The request is ignored
Correct Answer:
D
Chapter: 134
Q1882:
What does the Address Resolution Protocol (ARP) do?
A. Maps IP addresses to MAC addresses
B. Assigns IP addresses to devices
C. Assigns MAC addresses to devices
D. Sends data between IP nodes
Correct Answer:
A
Chapter: 134
Q1883:
Fill in the blank: ARP operates mainly at the _______ layer of the OSI model.
A. Physical
B. Network
C. Link
D. Transport
Correct Answer:
C
Chapter: 134
Q1884:
Which of the following is true about ARP?
A. ARP maps IP addresses to MAC addresses
B. ARP maps MAC addresses to IP addresses
C. ARP is used for DNS resolution
D. ARP is used for routing IP packets
Correct Answer:
A
Chapter: 134
Q1885:
When a device needs to find the MAC address for an IP address, it sends an _______ request.
A. ARP request
B. ARP reply
C. ARP broadcast
D. ARP probe
Correct Answer:
A
Chapter: 134
Q1886:
Fill in the blank: An ARP request is a _______ message sent to all devices in the local network.
A. broadcast
B. unicast
C. anycast
D. multicast
Correct Answer:
A
Chapter: 134
Q1887:
What is contained in the ARP reply message?
A. Source MAC address, destination IP address
B. Source MAC address, destination MAC address
C. Source IP address, destination IP address
D. Source IP address, destination MAC address
Correct Answer:
B
Chapter: 134
Q1888:
Which type of address does ARP resolve from an IP address?
A. Link-layer address
B. Domain name address
C. IP address
D. Port address
Correct Answer:
A
Chapter: 134
Q1889:
Fill in the blank: The ARP request is sent to the _______ address of the network.
A. unicast
B. broadcast
C. multicast
D. anycast
Correct Answer:
B
Chapter: 134
Q1890:
Which of the following is a correct ARP request message format?
A. IP address of source, MAC address of destination
B. IP address of source, IP address of destination
C. MAC address of source, IP address of destination
D. IP address of source, MAC address of destination
Correct Answer:
A
Chapter: 134
Q1891:
In an ARP request, what address is used to identify the sender?
A. MAC address
B. Port address
C. IP address
D. Subnet mask
Correct Answer:
A
Chapter: 134
Q1892:
What happens if an ARP reply is not received?
A. The sender retries the request until a reply is received
B. The sender discards the request and tries another method
C. The sender waits for the ARP cache to expire
D. The sender stops all communication
Correct Answer:
D
Chapter: 134
Q1893:
Fill in the blank: ARP is used in _______ networks to map IP addresses to MAC addresses.
A. IPv6
B. IPv4
C. Wi-Fi
D. Mesh
Correct Answer:
B
Chapter: 134
Q1894:
What is the purpose of the ARP cache?
A. To speed up the process of resolving IP addresses to MAC addresses
B. To store all active IP addresses on the network
C. To store the network routes between IP addresses
D. To map domain names to IP addresses
Correct Answer:
A
Chapter: 134
Q1895:
In ARP, if a device does not know the MAC address corresponding to an IP address, it sends a(n) _______ request.
A. ARP
B. ICMP
C. DHCP
D. TCP
Correct Answer:
A
Chapter: 134
Q1896:
Fill in the blank: ARP requests are generally broadcast in a _______ network.
A. single-node
B. shared
C. local remote
D. star
Correct Answer:
A
Chapter: 134
Q1897:
What happens after a device receives an ARP reply?
A. It stores the IP-MAC mapping in its ARP cache
B. Forwards the ARP reply to other devices in the network
C. Uses the MAC address to route the packet
D. Deletes the ARP reply after use
Correct Answer:
A
Chapter: 134
Q1898:
Which of the following is a typical size of an ARP message?
A. 64 bytes
B. 100 bytes
C. 40 bytes
D. 60 bytes
Correct Answer:
C
Chapter: 134
Q1899:
Which ARP message is sent when a device requests the MAC address for an IP address?
A. ARP request
B. ARP reply
C. ARP probe
D. ARP response
Correct Answer:
A
Chapter: 134
Q1900:
Fill in the blank: The ARP protocol is crucial in translating IP addresses to _______ addresses in the data link layer.
A. Physical
B. Link-layer
C. Domain
D. Network
Correct Answer:
B