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

Question
What is a default gateway in a network?
A. The primary DNS server
B. The network switch
C. The device that routes traffic to other networks
D. The DHCP server
Answer: Option C
Solution (By JKSSB Mock Tests)
The default gateway is a router that connects the local network to external networks.
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Practice More Computer Networking Questions

Question #1
Which network device is used to connect different types of networks, such as Ethernet and Wi-Fi?
A. Switch
B. Router
C. Hub
D. Bridge
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Correct Answer: Option B

Explanation:
A router can connect different types of networks, including wired and wireless.
This question belongs to: Computer Computer Networking
Question #2
Which topology design features all client nodes wired directly to a central switch or hub, ensuring that a broken client cable only affects that single node?
A. Linear Topology
B. Star Topology
C. Bus Topology
D. Ring Topology
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Correct Answer: Option B

Explanation:
In a star topology, each device connects back to a central switch via an isolated cable run, so a cable break only affects that specific device.
This question belongs to: Computer Computer Networking
Question #3
Which address space range is reserved by the IETF for Automatic Private IP Addressing (APIPA) when a client cannot contact a DHCP server?
A. 192.168.0.0 to 192.168.255.255
B. 127.0.0.0 to 127.255.255.255
C. 10.0.0.0 to 10.255.255.255
D. 169.254.0.0 to 169.254.255.255
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Correct Answer: Option D

Explanation:
The 169.254.0.0/16 address block is reserved for APIPA, allowing devices to automatically configure a temporary link-local IP address when DHCP is unavailable.
This question belongs to: Computer Computer Networking
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