Skip to content
GATETECH
Official PYQ · 2025Set 1 · Q6Concept of Layering: OSI and TCP/IP Protocol StacksMCQ1 mark

GATE CS 2025 Set 1 Q6 — Concept of Layering: OSI and TCP/IP Protocol Stacks

Explain with AI

Identify the ONE CORRECT matching between the OSI layers and their corresponding functionalities as shown.

OSI LayersFunctionalities(a)Network Layer(I)Packet Routing(b)Transport Layer(II)Framing and error handling(c)Datalink layer(III)Host to host communication\begin{array}{|l|l|} \hline & \textbf{OSI Layers} && \textbf{Functionalities} \\ \hline (a) & \text{Network Layer} & (I) & \text{Packet Routing} \\ \hline (b) & \text{Transport Layer} & (II) & \text{Framing and error handling} \\ \hline (c) & \text{Datalink layer} & (III) & \text{Host to host communication} \\ \hline \end{array}

Choose one option
View worked solution

Answer: B

We can match the OSI layers to their functionalities as follows:

  • Network Layer (a): Responsible for routing packets across multiple networks. Hence, (a) matches with (I) Packet Routing.
  • Datalink Layer (c): Responsible for node-to-node data transfer, which includes organizing bits into frames and basic error detection. Hence, (c) matches with (II) Framing and error handling.
  • Transport Layer (b): Responsible for end-to-end (host-to-host) communication and delivery of messages. Hence, (b) matches with (III) Host to host communication.

Thus, the correct matching is (a)-(I), (b)-(III), (c)-(II), which corresponds to Option B.

Free practice · Your answers on this page are not saved.

Published
Report a correction
Keep exploringMore Concept of Layering: OSI and TCP/IP Protocol Stacks questions