Open System Interconnection (OSI)

Question 1

The Open Systems Interconnection (OSI) model consists of:

7 layers

3 layers

9 layers

5 layers

Answer 1

7 layers

Question 2

Physical layer of the OSI model is also known as:

Layer 2

Layer 7

Layer 1

Layer 4

Answer 2

Layer 1

Question 3

Which of the following protocols reside at the application layer of the OSI model? (Select 3 answers)

ATM

HTTP

FTP

IP

SMTP

TCP/UDP

Answer 3

HTTP
FTP
SMTP

Question 4

Which of the terms listed below refers to the OSI network layer?

Layer 2

Layer 5

Layer 3

Layer 4

Answer 4

Layer 3

Question 5

Layer 6 of the OSI model is also referred to as:

Application layer

Presentation layer

Session layer

Transport layer

Answer 5

Presentation layer

Question 6

In the OSI model, physical addressing takes place at the:

Data link layer

Layer 4

Physical layer

Session layer

Answer 6

Data link layer

Question 7

OSI layer 7 is also known as:

Application layer

Session layer

Presentation layer

Transport layer

Answer 7

Application layer

Question 8

Which of the following reside at the physical layer of the OSI model? (Select 2 answers)

Router

Hub

Switch

Network cabling

Bridge

Answer 8

Hub

Network cabling

Question 9

Character encoding, data compression and encryption/decryption take place at the:

Application layer of the OSI model

Presentation layer of the OSI model

Session layer of the OSI model

Transport layer of the OSI model

Answer 9

Presentation layer of the OSI model

Question 10

Which OSI layer assumes responsibility for managing network connections between applications?

Network layer

Data link layer

Application layer

Session layer

Answer 10

Session layer

Question 11

Layer 4 of the OSI model is also known as:

Transport layer

Network layer

Data link layer

Session layer

Answer 11

Transport layer

Question 12

The term “Presentation layer” refers to:

Layer 7 of the OSI model

Layer 5 of the OSI model

Layer 6 of the OSI model

Layer 4 of the OSI model

Answer 12

Layer 6 of the OSI model

Question 13

What is the name of a data unit used at the OSI physical layer?

Frame

Segment

Bit

Packet

Answer 13

Bit

Question 14

In the OSI model, Media Access Control (MAC) and Logical Link Control (LLC) sublayers are the components of:

Session layer

Data link layer

Transport layer

Network layer

Answer 14

Data link layer

Question 15

Layer 2 of the OSI model is also referred to as:

Transport layer

Network layer

Data link layer

Physical layer

Answer 15

Data link layer

Question 16

User Datagram Protocol (UDP) resides at: (Select 2 answers)

Transport layer

Layer 3

Layer 4

Network layer

Layer 6

Data link layer

Answer 16

Transport layer

Layer 4

Question 17

Which OSI layer is responsible for breaking up data into segments?

Network layer

Transport layer

Presentation layer

Data link layer

Answer 17

Transport layer

Question 18

Transport layer resides between which two other layers of the OSI model?

Network and Session

Presentation and Application

Physical and Network

Physical and Data link

Answer 18

Network and Session

Question 19

Routers operate at: (Select 2 answers)

Physical layer of the OSI model

Application layer of the OSI model

Layer 3 of the OSI model

Network layer of the OSI model
Layer 5 of the OSI model

Answer 19

Layer 3 of the OSI model

Network layer of the OSI model

Question 20

Layer 5 of the OSI model is also known as:

Session layer

Application layer

Transport layer

Presentation layer

Answer 20

Session layer

Question 21

In the OSI model, session layer is also referred to as:

Layer 4

Layer 6

Layer 5

Layer 3

Answer 21

Layer 5

Question 22

At which of the OSI layers IP addressing takes place?

Layer 3

Layer 1

Layer 4

Layer 6

Answer 22

Layer 3

Question 23

Layer 3 of the OSI model is also known as:

Data link layer

Network layer

Session layer

Transport layer

Answer 23

Network layer

Question 24

Data encryption and decryption typically takes place at the:

Layer 5 of the OSI model

Presentation layer of the OSI model

Layer 7 of the OSI model

Data link layer of the OSI model

Answer 24

Presentation layer of the OSI model

Question 25

The application layer of the OSI model is also referred to as: Layer 1 Layer 3 Layer 6 Layer 7

Answer 25

Layer 7

Question 26

Which of the following devices resides at the data link layer of the OSI model? Router Passive hub Ethernet switch Repeater

Answer 26

Ethernet switch

Question 27

In the OSI model, Transmission Control Protocol (TCP) resides at: (Select 2 answers) Transport layer Layer 3 Application layer Layer 4 Network layer Layer 7

Answer 27

Transport layer | Layer 4

Question 28

Which of following protocols reside(s) at the OSI network layer? (Select all that apply) IPv4 UDP IPsec TCP IPv6 ICMP

Answer 28

IPv4 IPsec IPv6 ICMP

Question 29

Which of the protocols listed below resides at the session layer of the OSI model? HTTP UDP IP SMTP PPTP

Answer 29

PPTP

Question 30

Internet Protocol Security (IPsec) resides at: Network layer of the OSI model Transport layer of the OSI model Session layer of the OSI model Presentation layer of the OSI model

Answer 30

Network layer of the OSI model

Question 31

Which of the following protocols reside at the OSI transport layer? (Select 2 answers) UDP SSL/TLS ICMP TCP ARP PPTP

Answer 31

UDP | TCP

Question 32

Which of the answers listed below refer to components that reside at the OSI network layer? (Select 3 answers) Router Network cabling IP address TCP/UDP protocols Switch Packet

Answer 32

Router IP address Packet

Question 33

What are the characteristic components of the OSI data link layer? (Select 3 answers) MAC address Packet Switch Network cabling Router Frame

Answer 33

MAC address Switch Frame

Question 34

Which of the following reside at the physical layer of the OSI model? (Select 2 answers) IP address Switch Bit Router Network cabling Frame

Answer 34

Bit | Network cabling

Question 35

The term "Transport layer" refers to: Layer 7 of the OSI model Layer 5 of the OSI model Layer 6 of the OSI model Layer 4 of the OSI model

Answer 35

Layer 4 of the OSI model