Dear candidates you will find MCQ questions of Computer Networking here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
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Explanation: In a star topology, all devices connect to a central hub or switch. Bus uses a single backbone cable, Ring connects in a loop, and Mesh connects devices directly.
Explanation: HTTPS (HyperText Transfer Protocol Secure) uses SSL/TLS for secure communication. HTTP is not secure, FTP is for file transfer, and Telnet is insecure remote login.
Explanation: DNS stands for Domain Name System, which resolves domain names into IP addresses.
Explanation: The Network Layer handles logical addressing (IP) and routing. The Data Link Layer uses MAC addresses.
Explanation: A switch works at the Data Link Layer (Layer 2) using MAC addresses. Routers operate at Layer 3, hubs at Layer 1, and gateways at multiple layers.
Explanation: Class A networks have the largest number of hosts due to their 24-bit host portion. Class B and C provide fewer hosts. Class D is for multicast.
Explanation: Class C addresses use 255.255.255.0 as the default subnet mask, allowing 254 usable hosts.
Explanation: NAT (Network Address Translation) converts private IP addresses to public ones. DNS resolves names, DHCP assigns IPs, and ICMP is for error messaging.
Explanation: The ping command checks connectivity using ICMP packets. tracert shows route, netstat shows active connections, ipconfig displays IP info.
Explanation: TCP (Transmission Control Protocol) is connection-oriented, ensuring reliable data transfer. UDP is connectionless, IP is a routing protocol, and ICMP is used for error reporting.