What is the loopback IP address in IPv4? MCQ with Answer and Explanation

What is the loopback IP address in IPv4?
A. 0.0.0.0
B. 127.0.0.1
C. 255.255.255.255
D. 192.168.1.1
Answer: Option B
Solution (By JKExamLibrary)
127.0.0.1 is the loopback address used for testing network software on the local machine.

This question belongs to: Computer Computer Networking

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Practice More Computer Networking Questions

Question #1 Report Error
Which of the following is a disadvantage of a star topology?
A. Expensive cabling compared to bus
B. Low data rates
C. If the central hub fails, the network fails
D. Difficult to add new devices

Correct Answer: Option C


Explanation:
Star topology relies on a central device; its failure disables the whole network.

This question belongs to: Computer Computer Networking
Question #2 Report Error
What is a collision domain?
A. A group of routers
B. A set of network devices where collisions can occur
C. A domain where IP addresses are assigned
D. A broadcast domain

Correct Answer: Option B


Explanation:
A collision domain is a network segment where packets can collide with each other if transmitted simultaneously.

This question belongs to: Computer Computer Networking
Question #3 Report Error
What notation standard is used to write and display modern 128-bit IPv6 address configurations readably?
A. Dotted decimal fields
B. Eight groups of four hexadecimal digits separated by colons
C. Base-64 character strings
D. Binary bitstream flags

Correct Answer: Option B


Explanation:
IPv6 addresses are formatted as eight groups of four hexadecimal digits separated by colons (e.g., 2001:0db8:0000:0000:0000:ff00:0042:8329).

This question belongs to: Computer Computer Networking