Entrance Exams
Govt. Exams
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Topics in Networking
TCP/IP model has fewer layers than the OSI model. How many layers does the TCP/IP model have?
Correct Answer:
B. 4 layers
EXPLANATION
The TCP/IP model has 4 layers: Link, Internet, Transport, and Application layers. Some variations include 5 layers by splitting the Link layer.
Which device operates primarily at Layer 3 of the OSI model?
Correct Answer:
C. Router
EXPLANATION
Routers operate at Layer 3 and use IP addresses to route packets between different networks. Hubs and repeaters work at Layer 1, switches at Layer 2.
In the OSI model, which layers are considered the 'Media Layers'?
Correct Answer:
A. Layers 1, 2, and 3
EXPLANATION
Layers 1-3 (Physical, Data Link, and Network) are called Media Layers as they deal with network transmission and routing.
Which of the following is NOT a function of the Application Layer (Layer 7)?
Correct Answer:
C. MAC address resolution
EXPLANATION
MAC address resolution (ARP) happens at Layer 2 (Data Link Layer). Layer 7 provides user-facing services like HTTP, SMTP, and FTP.
A company wants to convert data formats between different systems. Which OSI layer should handle this?
Correct Answer:
C. Presentation Layer
EXPLANATION
The Presentation Layer (Layer 6) handles data translation, encryption, compression, and format conversion (e.g., ASCII to EBCDIC).