Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 132
Q1861:
Which of the following is a typical ARP message type?
A. ARP request
B. ARP connection
C. ARP search
D. ARP destination
Correct Answer:
A
Chapter: 132
Q1862:
When a node wants to send an IP packet, it needs the _______ address to encapsulate the packet in a frame.
A. IP
B. Subnet mask
C. Link-layer
D. MAC
Correct Answer:
C
Chapter: 132
Q1863:
Fill in the blank: ARP resolves _______ address to link-layer (MAC) address.
A. Port
B. Network
C. IP
D. Subnet
Correct Answer:
C
Chapter: 132
Q1864:
Which of the following protocols operates at the Link Layer and is responsible for mapping IP addresses to MAC addresses?
A. ARP
B. TCP
C. UDP
D. ICMP
Correct Answer:
A
Chapter: 133
Q1865:
What is the purpose of ARP (Address Resolution Protocol)?
A. To resolve MAC addresses to IP addresses
B. To route IP packets across networks
C. To translate IP addresses to domain names
D. To provide security for IP addresses
Correct Answer:
A
Chapter: 133
Q1866:
When a node wants to send data to a destination IP address, it needs to resolve the corresponding _______ address.
A. MAC
B. IP
C. Port
D. Network
Correct Answer:
A
Chapter: 133
Q1867:
What type of message is sent by a node when it needs to find the MAC address for a known IP address?
A. ARP request
B. ARP reply
C. ARP response
D. ARP broadcast
Correct Answer:
A
Chapter: 133
Q1868:
Fill in the blank: An ARP reply contains the _______ address of the node that owns the requested IP address.
A. IP
B. MAC
C. Port
D. Subnet
Correct Answer:
B
Chapter: 133
Q1869:
Which of the following is true about the ARP protocol?
A. ARP is used to convert MAC addresses to IP addresses.
B. ARP is used to convert IP addresses to MAC addresses.
C. ARP is used for security purposes in networks.
D. ARP is used to assign IP addresses to nodes.
Correct Answer:
B
Chapter: 133
Q1870:
Fill in the blank: ARP operates primarily at the _______ layer of the OSI model.
A. Physical
B. Network
C. Link
D. Transport
Correct Answer:
C
Chapter: 133
Q1871:
Which of the following protocols is used in IPv4 networks for resolving IP addresses to MAC addresses?
A. ARP
B. ICMP
C. UDP
D. TCP
Correct Answer:
A
Chapter: 133
Q1872:
When a device receives an ARP request, it responds if _______.
A. it has the matching IP address
B. it is the default gateway
C. it is the destination host
D. it has no active IP address
Correct Answer:
A
Chapter: 133
Q1873:
Which of the following is the correct ARP message format?
A. ARP request, ARP response
B. ARP reply, ARP response
C. ARP broadcast, ARP response
D. ARP inquiry, ARP response
Correct Answer:
A
Chapter: 133
Q1874:
Fill in the blank: If a device does not know the MAC address corresponding to an IP address, it sends an _______ request.
A. ARP
B. ICMP
C. TCP
D. UDP
Correct Answer:
A
Chapter: 133
Q1875:
Which type of ARP message is sent when the source device wants to obtain the MAC address of a destination device?
A. ARP request
B. ARP reply
C. ARP broadcast
D. ARP probe
Correct Answer:
A
Chapter: 133
Q1876:
What is the purpose of the ARP cache?
A. To store domain name mappings
B. To store IP address mappings
C. To store recent IP-to-MAC address mappings
D. To store all the IP addresses in the network
Correct Answer:
C
Chapter: 133
Q1877:
Fill in the blank: The ARP protocol is mainly used in _______ networks.
A. IPv6
B. IPv4
C. Both IPv4 and IPv6
D. None of the above
Correct Answer:
B
Chapter: 133
Q1878:
Which of the following is NOT a valid ARP message?
A. ARP request
B. ARP reply
C. ARP unicast
D. ARP response
Correct Answer:
C
Chapter: 133
Q1879:
In ARP, the MAC address is used to _______.
A. Identify a specific network node
B. Identify a specific port
C. Identify the network layer
D. Identify the IP address
Correct Answer:
A
Chapter: 133
Q1880:
Fill in the blank: An ARP request contains the _______ address of the sender and the destination IP address for which the MAC address is needed.
A. MAC
B. IP
C. Port
D. Subnet
Correct Answer:
B