OSI Model

Question 1

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

Answer 1

Hub
Networking Cable
Repeater

Question 2

Physical layer of the OSI model is also known as

Answer 2

Layer 1

Question 3

What are the characteristic components of the OSI data link layer?

Answer 3

MAC address
Network switch
Ethernet frame

Question 4

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

Answer 4

Data link layer

Question 5

refers to a data link layer device designed to forward frames between network segments?

Answer 5

Switch

Question 6

refer to the OSI network layer components?

Answer 6

Router
IP address
Packet

Question 7

What is the name of a network layer protocol that specifies the format of packets and addressing scheme in network communications

Answer 7

IP

Question 8

refers to the OSI network layer?

Answer 8

Layer 3

Question 9

Which of the protocols listed below reside at the OSI transport layer?

Answer 9

UDP
TCP

Question 10

Layer 4 of the OSI model is also known as

Answer 10

Transport layer

Question 11

Which OSI layer assumes the responsibility for opening, closing, and maintaining connections between applications?

Answer 11

Session layer

Question 12

Authentication and authorization take place at the:

Answer 12

Session layer

Question 13

Data format translation, data compression, and data encryption/decryption take place at the:

Answer 13

Presentation layer of the OSI model

Question 14

The term “Presentation layer” refers to:

Answer 14

Layer 6

Question 14

The application layer of the OSI model is also known as:

Answer 14

Layer 7

Question 15

Which of the following protocols reside(s) at the application layer of the OSI model?

Answer 15

HTTP
FTP
SMTP

Question 16

In the context of the OSI model, the term “Data encapsulation” is used to describe a process where each layer of the OSI model adds its own control information to the original data that is being passed across the layers from the physical layer up to the application layer.

Answer 16

False

Question 17

In the OSI model, the physical layer PDU is known as:

Answer 17

Bit

Question 17

refers to the OSI layer 2 header data? (Select 2 answers)

Answer 17

Source MAC address
Destination MAC address

Question 18

In the OSI model, the layer 2 PDU is called:

Answer 18

Frame

Question 19

In the OSI model, the layer 3 PDU is known as

Answer 19

Packet

Question 20

refers to examples of network layer header data? (Select 2 answers)

Answer 20

Source IP address
Destination IP address

Question 21

User Datagram Protocol (UDP) is a connection-oriented protocol using a three-way handshake which is a set of initial steps required for establishing network connection. UDP supports retransmission of lost packets, flow control (managing the amount of data that is being sent), and sequencing (rearranging packets that arrived out of order). Example applications of UDP include transmission of text and image data.

Answer 21

False

Question 23

Transmission Control Protocol (TCP) is an example of a connectionless protocol. Because TCP does not support three-way handshake while establishing a network connection, it is referred to as unreliable or best-effort protocol. Example applications of TCP include transmission of video and audio streaming data.

Answer 23

False