TCP/IP Protocol MCQs - 30 Questions

1. What does TCP stand for?
A) Transmission Control Protocol
B) Transfer Control Protocol
C) Transmission Communication Protocol
D) Transfer Communication Protocol
Answer: A

2. What is the main purpose of the IP protocol?
A) Reliable data delivery
B) Packet addressing and routing
C) Data compression
D) Secure data transmission
Answer: B

3. Which layer of the TCP/IP model corresponds to the OSI model's Transport Layer?
A) Application Layer
B) Network Layer
C) Transport Layer
D) Internet Layer
Answer: C

4. Which of the following is a connection-oriented protocol?
A) UDP
B) IP
C) TCP
D) ICMP
Answer: C

5. Which protocol is used for sending emails?
A) FTP
B) HTTP
C) SMTP
D) SNMP
Answer: C

6. Which layer of the TCP/IP model is responsible for routing packets?
A) Application Layer
B) Transport Layer
C) Internet Layer
D) Link Layer
Answer: C

7. What is the function of the UDP protocol?
A) Reliable data transmission
B) Unreliable data transmission
C) Secure data transmission
D) Encrypted data transmission
Answer: B

8. Which protocol is used to resolve IP addresses to MAC addresses?
A) ARP
B) RARP
C) DHCP
D) DNS
Answer: A

9. What is the default port number for HTTP?
A) 21
B) 80
C) 443
D) 25
Answer: B

10. In TCP/IP, which layer is responsible for data formatting?
A) Link Layer
B) Internet Layer
C) Application Layer
D) Transport Layer
Answer: C

11. What is the main difference between TCP and UDP?
A) TCP is slower but reliable, while UDP is faster but unreliable
B) TCP uses fewer resources than UDP
C) UDP is connection-oriented while TCP is connectionless
D) TCP is used for streaming data
Answer: A

12. What does ICMP stand for?
A) Internet Control Message Protocol
B) Internet Communication Message Protocol
C) Internet Core Messaging Protocol
D) Internal Control Messaging Protocol
Answer: A

13. Which protocol is used for secure web communication?
A) HTTP
B) FTP
C) HTTPS
D) SMTP
Answer: C

14. What is the primary role of DHCP?
A) Domain name resolution
B) Dynamic IP address assignment
C) Data encryption
D) Email delivery
Answer: B

15. In TCP/IP, what is the role of the Application Layer?
A) Provides routing
B) Manages connections
C) Facilitates user interaction with applications
D) Handles error correction
Answer: C

16. Which of the following is NOT a function of the Network Layer?
A) Logical addressing
B) Packet forwarding
C) Error detection
D) Routing
Answer: C

17. What type of addressing does the Internet Layer use?
A) MAC Addressing
B) IP Addressing
C) Port Addressing
D) Application Addressing
Answer: B

18. What is the maximum size of a TCP segment?
A) 64 KB
B) 256 KB
C) 16 MB
D) 1 MB
Answer: A

19. What is the primary purpose of NAT (Network Address Translation)?
A) Secure data transmission
B) Convert private IP addresses to public IP addresses
C) Improve network speed
D) Route packets between networks
Answer: B

20. Which protocol is used to retrieve emails from a server?
A) SMTP
B) IMAP
C) FTP
D) SNMP
Answer: B

21. What is the purpose of the DNS protocol?
A) Secure data transfer
B) Convert domain names to IP addresses
C) Compress data
D) Encrypt communications
Answer: B

22. Which of the following is a disadvantage of TCP?
A) High latency
B) Reliability
C) Flow control
D) Connection-oriented
Answer: A

23. What does a subnet mask do?
A) Identifies the host in an IP address
B) Defines the network portion of an IP address
C) Encrypts data
D) Routes data packets
Answer: B

24. Which layer handles error detection and correction?
A) Application Layer
B) Transport Layer
C) Link Layer
D) Network Layer
Answer: C

25. What is the function of the ARP protocol?
A) Address resolution
B) Routing
C) Error checking
D) Connection management
Answer: A

26. Which protocol is responsible for session management?
A) TCP
B) UDP
C) SCTP
D) RTP
Answer: C

27. Which of the following is a key feature of TCP?
A) Connectionless
B) Error recovery
C) Unreliable
D) Stateless
Answer: B

28. What is the purpose of the ICMP protocol?
A) Email delivery
B) Network diagnostics
C) File transfer
D) Web browsing
Answer: B

29. Which command is used to check the availability of a host on a network?
A) ping
B) traceroute
C) netstat
D) ipconfig
Answer: A

30. In TCP/IP, which protocol is used for transferring files?
A) FTP
B) SMTP
C) HTTP
D) SNMP
Answer: A

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