CCST OSI and TCP/IP Models 2

Question 1

Which OSI layer manages sessions between applications?

Accepted Answer

Session (Layer 5)

Answer

The Session Layer (Layer 5) manages communication sessions including setup, maintenance, and teardown.

Question 2

At which TCP/IP model layer does HTTP operate?

Accepted Answer

Application

Answer

HTTP operates at the Application layer, which combines OSI layers 5-7.

Question 3

What is the primary function of the Presentation Layer (Layer 6)?

Accepted Answer

To translate data formats, handle encryption, and compress data

Answer

The Presentation Layer translates between application format and network format, handling encoding, encryption, and compression.

Question 4

Which PDU is associated with the Transport Layer?

Accepted Answer

Segments

Answer

The Transport Layer uses segments (TCP) or datagrams (UDP) as its PDU.

Question 5

How does the TCP/IP model differ from the OSI model?

Accepted Answer

TCP/IP has 4 layers mapping to OSI's 7, combining several layers

Answer

TCP/IP has 4 layers: Application (= OSI 5-7), Transport (= OSI 4), Internet (= OSI 3), Network Access (= OSI 1-2).

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