Computer Networks MCQ
Our website offers a wide range of Computer Network MCQs covering topics such as network basics, OSI and TCP/IP models, protocols, routing, switching, network security, wireless networking, and network management. Each question includes clear explanations to help learners understand concepts better and improve their problem-solving skills. Ideal for students, IT professionals, and exam aspirants, this platform makes computer network learning easy, practical, and effective for academic and career success.
Q1. Which layer of the OSI model is responsible for routing of data?
A. Data Link Layer
B. Network Layer
C. Transport Layer
D. Session Layer
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Q2. Which device operates at the Data Link Layer of OSI model?
A. Router
B. Switch
C. Hub
D. Gateway
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Q3. In TCP/IP, which protocol provides reliable data transfer?
A. TCP
B. UDP
C. IP
D. ARP
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Q4. Which protocol is used to translate domain names to IP addresses?
A. DHCP
B. FTP
C. DNS
D. SMTP
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Q6. Which of the following is a connectionless protocol?
A. TCP
B. UDP
C. HTTP
D. FTP
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Q7. Which addressing is used by the Data Link Layer?
A. IP address
B. MAC address
C. Port number
D. Domain name
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Q8. In IPv4, an IP address is of how many bits?
A. 32 bits
B. 64 bits
C. 128 bits
D. 16 bits
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Q9. Which protocol is used to securely browse websites?
A. HTTP
B. HTTPS
C. FTP
D. TELNET
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Q10. Which topology connects each node to a central hub?
A. Ring
B. Bus
C. Star
D. Mesh
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Q11. Which of the following is NOT an application layer protocol?
A. SMTP
B. FTP
C. DNS
D. ICMP
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Q12. ARP stands for:
A. Address Resolution Protocol
B. Automatic Routing Protocol
C. Advanced Routing Process
D. Application Resolution Protocol
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Q13. Which multiple access technique is used in Wi-Fi (IEEE 802.11)?
A. TDMA
B. FDMA
C. CSMA/CA
D. CDMA
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Q14. Which type of IP address is assigned automatically by DHCP?
A. Static IP
B. Dynamic IP
C. Private IP
D. Public IP
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Q15. Which protocol is used to send emails?
A. HTTP
B. SMTP
C. POP3
D. IMAP
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Q16. Which device operates at the Network Layer?
A. Switch
B. Router
C. Hub
D. Bridge
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Q17. Which layer of the OSI model provides error detection and correction?
A. Network Layer
B. Data Link Layer
C. Transport Layer
D. Physical Layer
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Q18. Which of the following is a disadvantage of circuit switching?
A. Guaranteed bandwidth
B. Dedicated path
C. Wasted resources if idle
D. Low latency
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Q19. Which protocol is used to transfer files over the Internet?
A. FTP
B. SMTP
C. HTTP
D. SNMP
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Q20. Which type of addressing is used in the Transport Layer?
A. IP address
B. Port number
C. MAC address
D. Session ID
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