Vaidikalaya

MCQ On TCP/IP Model

Q1. How many layers are present in the TCP/IP Reference Model?.
  1. 5
  2. 7
  3. 4
  4. 6

Answer: c, 4

Q2. TCP is a ______ protocol..
  1. Connectionless
  2. Connection-oriented
  3. Non-reliable
  4. Unicast only

Answer: b, Connection-oriented

Q3. TCP/IP model does not have ______ layer but OSI model have this layer..
  1. session layer
  2. transport layer
  3. application layer
  4. network layer

Answer: a, session layer

Q4. TCP/IP model was developed _____ the OSI model..
  1. prior to
  2. after
  3. simultaneous to
  4. with no link to

Answer: a, prior to

Solution: Several TCP/IP prototypes were developed at multiple research centers between 1978 and 1983, whereas OSI reference model was developed in the year 1984. TCP/IP was developed with the intention to create a model for the Internet while OSI was intended to be a general network model.

Q5. TCP/IP is related to:.
  1. ARPANET
  2. OSI
  3. DECNET
  4. ALOHA

Answer: a, ARPANET

Q6. The Network Access Layer in TCP/IP model is responsible for:.
  1. Routing packets across networks
  2. Reliable end-to-end delivery
  3. Accessing and transmitting frames over physical media
  4. DNS resolution

Answer: c, Accessing and transmitting frames over physical media

Solution: The Network Access Layer handles how frames are sent over physical media like copper, fiber, or wireless.

Q7. Which of the following operates at the Network Access Layer?.
  1. Transport Control Protocol
  2. IP Addressing
  3. MAC Addressing
  4. DHCP Leasing

Answer: b, IP Addressing

Solution: MAC addresses are used at the Data Link/Network Access Layer for hardware-level communication.

Q8. The Network Access Layer corresponds to which layers of the OSI Model?.
  1. Network Layer only
  2. Transport and Session Layers
  3. Physical and Data Link Layers
  4. Application Layer

Answer: c, Physical and Data Link Layers

Solution: TCP/IP’s Network Access Layer combines OSI’s Physical and Data Link layers.

Q9. Which protocol is commonly used at the Network Access Layer?.
  1. HTTP
  2. PPP
  3. FTP
  4. SNMP

Answer: b, PPP

Solution: PPP is a Data Link protocol used for point?to?point communication.

Q10. The main function of the Network Access Layer is to:.
  1. Assign IP addresses
  2. Handle framing and physical transmission
  3. Provide congestion control
  4. Route packets between networks

Answer: b, Handle framing and physical transmission

Solution: The Network Access Layer manages framing, error detection, and the physical transmission of bits.

Q11. Which device primarily works at the Network Access Layer?.
  1. Router
  2. Layer?2 Switch
  3. Firewall
  4. DNS Server

Answer: b, Layer?2 Switch

Solution: Layer?2 switches operate at the Data Link Layer, which maps to TCP/IP’s Network Access Layer.

Q12. Which mechanism is used at the Network Access Layer for collision management?.
  1. Sliding Window
  2. CSMA/CD
  3. Three?way Handshake
  4. Distance Vector Algorithm

Answer: b, CSMA/CD

Solution: CSMA/CD is used in Ethernet for managing collisions at the Data Link Layer.

Q13. The Network Access Layer is also known as:.
  1. Internet Layer
  2. Host?to?Host Layer
  3. Link Layer
  4. Application Layer

Answer: c, Link Layer

Solution: In TCP/IP terminology, the Network Access Layer is often called the Link Layer.

Q14. The physical transmission medium (copper, fiber, wireless) is defined in which layer of TCP/IP?.
  1. Transport Layer
  2. Internet Layer
  3. Application Layer
  4. Network Access Layer

Answer: d, Network Access Layer

Solution: The Network Access Layer specifies how bits are transmitted over the physical medium.

Q15. A frame check sequence (FCS) used for error detection works at which layer in TCP/IP?.
  1. Application Layer
  2. Internet Layer
  3. Network Access Layer
  4. Transport Layer

Answer: c, Network Access Layer

Solution: FCS is part of Ethernet/Data Link Layer operations, mapped to the Network Access Layer.

Q16. The primary responsibility of the Internet Layer in the TCP/IP model is:.
  1. Error-free delivery of frames
  2. Logical addressing and routing
  3. Process-to-process communication
  4. Encryption of data

Answer: b, Logical addressing and routing

Solution: The Internet Layer handles routing and logical addressing using IP.

Q17. Which protocol operates at the Internet Layer?.
  1. TCP
  2. Ethernet
  3. IP
  4. HTTP

Answer: c, IP

Solution: IP (Internet Protocol) is the primary protocol of the Internet Layer.

Q18. Which addressing type is used by the Internet Layer to identify hosts?.
  1. MAC Address
  2. Port Number
  3. IP Address
  4. Domain Name

Answer: c, IP Address

Solution: The Internet Layer uses IP addresses for identifying hosts across networks.

Q19. Fragmentation of packets is handled by the:.
  1. Transport Layer
  2. Application Layer
  3. Internet Layer
  4. Network Access Layer

Answer: c, Internet Layer

Solution: The Internet Layer performs packet fragmentation when necessary.

Q20. Which of the following is NOT a protocol of the Internet Layer?.
  1. ICMP
  2. ARP
  3. IGMP
  4. FTP

Answer: d, FTP

Solution: FTP operates at the Application Layer, not the Internet Layer.

Q21. ICMP at the Internet Layer is used for:.
  1. Routing packets
  2. Delivering emails
  3. Error reporting and diagnostics
  4. Congestion control

Answer: c, Error reporting and diagnostics

Solution: ICMP is used for error messages and diagnostic functions like ping.

Q22. The field in the IPv4 header used to prevent infinite looping of packets is:.
  1. Protocol
  2. Checksum
  3. TTL
  4. Flags

Answer: c, TTL

Solution: TTL (Time To Live) limits the lifespan of a packet to prevent looping.

Q23. Which of the following best describes the Internet Layer?.
  1. Handles flow control between processes
  2. Provides host-to-host communication
  3. Provides best-effort packet delivery
  4. Ensures reliable segment delivery

Answer: c, Provides best-effort packet delivery

Solution: The Internet Layer does not guarantee delivery; it is best-effort.

Q24. Which Internet Layer protocol manages multicast communication?.
  1. IGMP
  2. ARP
  3. TCP
  4. DHCP

Answer: a, IGMP

Solution: IGMP handles multicast group management.

Q25. Which of the following statements is true regarding IPv4 and IPv6?.
  1. IPv6 uses ARP for address resolution
  2. IPv4 and IPv6 have the same header format
  3. IPv6 does not support broadcast
  4. IPv4 supports 128-bit addressing

Answer: c, IPv6 does not support broadcast

Solution: IPv6 replaces broadcast with multicast and anycast.

Q26. The Internet Layer uses which method to route packets?.
  1. Circuit switching
  2. Virtual circuits
  3. Packet switching
  4. Message switching

Answer: c, Packet switching

Solution: The Internet Layer relies on packet switching for efficient routing.

Q27. The protocol responsible for mapping IP address to MAC address is:.
  1. ICMP
  2. RARP
  3. ARP
  4. IGMP

Answer: c, ARP

Solution: ARP resolves IP addresses to physical MAC addresses.

Q28. The Internet Layer provides which type of service?.
  1. Connection-oriented
  2. Connection-less
  3. Both A and B
  4. None

Answer: b, Connection-less

Solution: IP is a connectionless protocol that does not establish sessions.

Q29. In IP packet fragmentation, MTU stands for:.
  1. Maximum Transfer Utility
  2. Minimum Transmission Unit
  3. Maximum Transmission Unit
  4. Multi-Tasking Unit

Answer: c, Maximum Transmission Unit

Solution: MTU is the maximum size of a packet that can be transmitted.

Q30. The 32-bit address in IPv4 is divided into:.
  1. Host number only
  2. Network number + Host number
  3. Subnet ID + VLAN ID
  4. Port + Host

Answer: b, Network number + Host number

Solution: IPv4 address format includes network and host portions.