Open System Interconnection (OSI) Flashcards

1
Q

The Open Systems Interconnection (OSI) model consists of:

7 layers

3 layers

9 layers

5 layers

A

7 layers

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2
Q

Physical layer of the OSI model is also known as:

Layer 2

Layer 7

Layer 1

Layer 4

A

Layer 1

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3
Q

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

ATM

HTTP

FTP

IP

SMTP

TCP/UDP

A

HTTP
FTP
SMTP

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4
Q

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

Layer 2

Layer 5

Layer 3

Layer 4

A

Layer 3

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5
Q

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

Application layer

Presentation layer

Session layer

Transport layer

A

Presentation layer

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6
Q

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

Data link layer

Layer 4

Physical layer

Session layer

A

Data link layer

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7
Q

OSI layer 7 is also known as:

Application layer

Session layer

Presentation layer

Transport layer

A

Application layer

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8
Q

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

Router

Hub

Switch

Network cabling

Bridge

A

Hub

Network cabling

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9
Q

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

A

Presentation layer of the OSI model

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10
Q

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

Network layer

Data link layer

Application layer

Session layer

A

Session layer

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11
Q

Layer 4 of the OSI model is also known as:

Transport layer

Network layer

Data link layer

Session layer

A

Transport layer

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12
Q

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

A

Layer 6 of the OSI model

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13
Q

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

Frame

Segment

Bit

Packet

A

Bit

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14
Q

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

A

Data link layer

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15
Q

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

Transport layer

Network layer

Data link layer

Physical layer

A

Data link layer

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16
Q

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

Transport layer

Layer 3

Layer 4

Network layer

Layer 6

Data link layer

A

Transport layer

Layer 4

17
Q

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

Network layer

Transport layer

Presentation layer

Data link layer

A

Transport layer

18
Q

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

A

Network and Session

19
Q

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

A

Layer 3 of the OSI model

Network layer of the OSI model

20
Q

Layer 5 of the OSI model is also known as:

Session layer

Application layer

Transport layer

Presentation layer

A

Session layer

21
Q

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

Layer 4

Layer 6

Layer 5

Layer 3

A

Layer 5

22
Q

At which of the OSI layers IP addressing takes place?

Layer 3

Layer 1

Layer 4

Layer 6

A

Layer 3

23
Q

Layer 3 of the OSI model is also known as:

Data link layer

Network layer

Session layer

Transport layer

A

Network layer

24
Q

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

A

Presentation layer of the OSI model

25
Q

The application layer of the OSI model is also referred to as:

Layer 1

Layer 3

Layer 6

Layer 7

A

Layer 7

26
Q

Which of the following devices resides at the data link layer of the OSI model?

Router

Passive hub

Ethernet switch

Repeater

A

Ethernet switch

27
Q

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

A

Transport layer

Layer 4

28
Q

Which of following protocols reside(s) at the OSI network layer? (Select all that apply)

IPv4

UDP

IPsec

TCP

IPv6

ICMP

A

IPv4
IPsec
IPv6
ICMP

29
Q

Which of the protocols listed below resides at the session layer of the OSI model?

HTTP

UDP

IP

SMTP

PPTP

A

PPTP

30
Q

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

A

Network layer of the OSI model

31
Q

Which of the following protocols reside at the OSI transport layer? (Select 2 answers)

UDP

SSL/TLS

ICMP

TCP

ARP

PPTP

A

UDP

TCP

32
Q

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

A

Router
IP address
Packet

33
Q

What are the characteristic components of the OSI data link layer? (Select 3 answers)

MAC address

Packet

Switch

Network cabling

Router

Frame

A

MAC address
Switch
Frame

34
Q

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

IP address

Switch

Bit

Router

Network cabling

Frame

A

Bit

Network cabling

35
Q

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

A

Layer 4 of the OSI model