CCNA

Question 1

Application Layer

Answer 1

• 7th Layer

- Provides a user interface

Question 2

Presentation Layer

Answer 2

• 6th Layer
• Presents data
• Handles processing such as encryption

Question 3

Session Layer

Answer 3

• 5th Layer

- Keeps different applications’ data separate

Question 4

Transport Layer

Answer 4

• 4th Layer
• Provides reliable or unreliable delivery
• Performs error correction before retransmit

Question 5

Network Layer

Answer 5

• 3rd Layer

- Provides logical addressing, which routers use for path determination

Question 6

Data Link Layer

Answer 6

• 2nd Layer
• Combines packets into bytes and bytes into frames
• Provides access to media using MAC address
• Performs error detection not correction

Question 7

Physical Layer

Answer 7

• 1st Layer
• Moves bits between devices
• Specifies voltage, wire speed, and pin-out of cables

Question 8

Application Layer Functions

Answer 8

-File, print, message, database, and application services

Question 9

Presentation Layer Functions

Answer 9

-Data encryption, compression, and translation services

Question 10

Session Layer Functions

Answer 10

-Dialog control

Question 11

Transport Layer Functions

Answer 11

-End-to-end connection

Question 12

Network Layer Functions

Answer 12

-Routing

Question 13

Data Link Layer Functions

Answer 13

-Framing

Question 14

Physical Layer Functions

Answer 14

-Physical topology