What is the purpose of an Ethernet frame's preamble? MCQ with Answer and Explanation

What is the purpose of an Ethernet frame's preamble?
A. To carry data
B. To provide error detection
C. To indicate the frame length
D. To synchronize the sender and receiver
Answer: Option D
Solution (By JKSSB Mock Tests)
The preamble is a 7-byte pattern for synchronization and clock alignment.

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Practice More Computer Networking Questions

Question #1
What is the purpose of a subnet mask?
A. To resolve domain names
B. To assign MAC addresses
C. To define the network portion and host portion of an IP address
D. To encrypt data

Correct Answer: Option C


Explanation:
A subnet mask separates the IP address into network and host bits.

This question belongs to: Computer Computer Networking
Question #2
Which network topology layout maps every device sequentially along a single continuous cable path, resembling a closed circular loop with no open endpoints?
A. Star Topology
B. Tree Topology
C. Ring Topology
D. Bus Topology

Correct Answer: Option C


Explanation:
A ring topology connects devices in a continuous loop, where each station receives and repeats data frames until they reach their destination.

This question belongs to: Computer Computer Networking
Question #3
Which protocol is used to manage multicast group memberships?
A. DHCP
B. ICMP
C. IGMP
D. ARP

Correct Answer: Option C


Explanation:
IGMP (Internet Group Management Protocol) manages multicast group memberships.

This question belongs to: Computer Computer Networking