Which technology translates public external IP addresses to private internal IP addresses, allowing multiple LAN gadgets to share one public web connection? MCQ with Answer and Explanation

Which technology translates public external IP addresses to private internal IP addresses, allowing multiple LAN gadgets to share one public web connection?
A. DHCP
B. NAT (Network Address Translation)
C. ARP
D. DNS
Answer: Option B
Solution (By JKSSB Mock Tests)
NAT enables a router to map private, non-routable internal LAN addresses to a singular public-facing IP, conserving global IPv4 pools.

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Practice More Computer Networking Questions

Question #1
What is the network address for a network with IP 192.168.1.150 and subnet mask 255.255.255.0?
A. 192.168.1.255
B. 192.168.0.0
C. 192.168.1.150
D. 192.168.1.0

Correct Answer: Option D


Explanation:
With a /24 mask, the network address is obtained by ANDing the IP with mask, resulting in 192.168.1.0.

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Question #2
What is the purpose of a VLAN trunk?
A. To carry traffic for multiple VLANs over a single link
B. To filter traffic
C. To assign IP addresses
D. To connect to the Internet

Correct Answer: Option A


Explanation:
Trunk links carry tagged frames for multiple VLANs between switches.

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Question #3
What is the maximum speed of Gigabit Ethernet?
A. 100 Mbps
B. 10 Gbps
C. 1 Gbps
D. 100 Gbps

Correct Answer: Option C


Explanation:
Gigabit Ethernet supports 1 Gbps (1000 Mbps).

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