What is a default gateway in a network? MCQ with Answer and Explanation

Question
What is a default gateway in a network?
A. The DHCP server
B. The device that routes traffic to other networks
C. The primary DNS server
D. The network switch
Answer: Option B
Solution (By JKSSB Mock Tests)
The default gateway is a router that connects the local network to external networks.
This question belongs to: Computer Computer Networking
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Question #1
What is the primary technical reason for the ongoing migration from traditional IPv4 address configurations to modern IPv6 address pools?
A. IPv4 requires manual analog modulation adjustments.
B. The 32-bit address space of IPv4 cannot provide enough unique addresses for the global volume of internet-connected devices.
C. IPv4 lacks compatibility with wireless devices.
D. IPv4 cannot route multimedia payloads.
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Correct Answer: Option B

Explanation:
The growth of internet-connected devices has exhausted the ~4.3 billion addresses available under the 32-bit IPv4 pool, necessitating the 128-bit capacity of IPv6.
This question belongs to: Computer Computer Networking
Question #2
Which device can be used to extend the length of a network segment by regenerating the signal?
A. Switch
B. Repeater
C. Gateway
D. Router
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Correct Answer: Option B

Explanation:
A repeater amplifies and regenerates signals to extend the distance of a network.
This question belongs to: Computer Computer Networking
Question #3
Which of the following is a private IP address belonging strictly to the Class B network registry block?
A. 10.150.1.1
B. 224.0.0.1
C. 172.16.50.4
D. 192.168.10.5
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Correct Answer: Option C

Explanation:
The private Class B IP range spans from 172.16.0.0 to 172.31.255.255, as defined by RFC 1918.
This question belongs to: Computer Computer Networking
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