OSI v1
OSI v2
v3
v4
v5
100

What is another name for the OSI data link layer?

a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 4
e. Layer 5

What is

b. Layer 2

The data link layer is layer 2 of the OSI model

is responsible for organizing and formatting data into packets. It also checks for errors and ensures that data is transmitted correctly between devices.

100

What is another name for the OSI network link layer?

a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 4
e. Layer 5

What is 

c. layer 3

Layer 3, also known as the network layer, deals with routing and addressing. It determines the best path for data to travel between devices and manages the traffic flow.

100

What is the responsibility of the MAC sublayer?

a. communicates with the network layer (layer 3)

b. provides the method to get the frame on and off the media

c. transmits the bits on the media

What is

b. The MAC sublayer of the data link layer is responsible for getting frames on and off the media

100

Which organization defines standards for the network access layer (i.e., the OSI physical and data link layers)?

a. Cisco

b. IANA

c. IEEE

d. IETF

What is 

c. IEEE

The IEEE defines standards for the TCP/IP network access layer, which are the OSI physical and data link layers.

100

Which LAN topology is a hybrid topology?

a. bus

b. extended star

c. ring

What is

b. extended star

The extended star topology is considered a hybrid topology because it combines multiple star topologies.

200

What is another name for the OSI application layer?

a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 4
e. Layer 7

What is

e. Layer 7

The application layer is layer 7 of the OSI model
is the layer that we interact with the most. It enables us to access network resources and communicate with other devices over the network through various applications like email, web browsers, or instant messaging.

200

What is another name for the OSI presentation layer?

a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 4
e. Layer 5

What is

Layer 6, also known as the presentation layer, deals with data formatting and encryption. It ensures that data is presented in a readable and understandable format.

200

The IEEE 802 LAN/MAN data link layer consists of which two sublayers? (Choose two.)

a. Network Control Protocol

b. Logical Link Control

c. Media Access Control

d. Link Control Protocol

What is 

c. Media Access Control

&

d. Logical Link Control

The data link layer consists of two sublayers

200

Which media access control method is used in legacy Ethernet LANs?

a. carrier sense multiple access/collision annoyance

b. carrier sense multiple access/collision avoidance

c. carrier sense multiple access/collision detection

what is

carrier sense multiple access/collision detection

Carrier sense multiple access /collision detection (CSMA/CD) is the media access control method used in legacy Ethernet LANs.

200

The collision invokes a random ___algorithm.

a. jam

b. backoff

c. segment 


what is

b. backoff 

Back-off algorithm is a collision resolution mechanism which is used in random access MAC protocols (CSMA/CD).

300

What is another name for the OSI session layer?

a. Layer 1
b. Layer 2
c. Layer 5
d. Layer 4
e. Layer 7

What is

c. Layer 5

The session layer is layer 5 of the OSI model

 the Session Layer helps make sure that all the devices on a network can talk to each other in a way that's private, secure, and fair.

is responsible for establishing and maintaining communication sessions between devices. It manages session checkpoints and recovery procedures in case of errors or disruptions in communication.

300

What is another name for the OSI data link layer?

a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 4
e. Layer 5

What is

b. Layer 2

The data link layer is layer 2 of the OSI model

is responsible for organizing and formatting data into packets. It also checks for errors and ensures that data is transmitted correctly between devices.

300

What is ARP?

a. address resolution protocol

b. communicates with the network layer (layer 3)

c. provides the method to get the frame on and off the media

transmits the bits on the media

What is 

a. address resolution protocol


300

Which duplex communication method is used in WLANs?

a. full-duplex

b. half-duplex

c. simplex

what is 

b. half-duplex

Wireless LANs (WLANs) only support half-duplex because only one device can access the media at a time.

300

What does the data link layer add to a Layer 3 packet to create a frame? (Choose two.)

a. flags

b. header

c. trailer


What is

b. header 

&

c. trailer

The data link layer adds a header which contains the source and destination Layer 2 address and a trailer that contains a frame check sequence (FCS).

400

What is another name for the OSI transport layer?

a. Layer 1
b. Layer 2
c. Layer 5
d. Layer 4
e. Layer 7

What is

d. Layer 4

The transport layer is layer 4 of the OSI model

manages end-to-end communication between devices. It ensures that data is delivered in the correct order and can handle errors and congestion.

400

What is another name for the OSI application layer?

a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 4
e. Layer 7

What is

e. Layer 7

The application layer is layer 7 of the OSI model
is the layer that we interact with the most. It enables us to access network resources and communicate with other devices over the network through various applications like email, web browsers, or instant messaging.

400

What Layer 2 function does a router perform? (Choose three.)

a. Accepts a frame from a medium

b. De-encapsulates the frame

c. Re-encapsulates the packet into a new frame

d. type of data

What is 

a. Accepts a frame from a medium

b. De-encapsulates the frame

c. Re-encapsulates the packet into a new frame

Routers perform four functions at Layer 2. They accept a frame from the media, de-encapsulate the packet from a frame, re-encapsulate the packet into a new frame, and forwards the new frame appropriate to the medium of that segment of the physical network.


400

What kind of network would use point-to-point, hub and spoke, or mesh topologies?

a. PAN

b. LAN

c. WLAN

d. WAN

what is

d. WAN

Wide Area Networks (WANs) come in many topologies, to include point-to-point, hub-and-spoke, and mesh.

400

What is the function of the last field in a data link layer frame?

a. To determine whether the frame experienced transmission errors

b. to identify special flow control services such as quality of service (QoS)

c. To identify the beginning and ends limits of the frame

What is

a. To determine whether the frame experienced transmission errors

The last field in the data link frame is the frame check sequence (FCS) which is used to determine if the frame has experienced transmission errors.

500

What is another name for the OSI physical layer?

a. Layer 1
b. Layer 2
c. Layer 5
d. Layer 4
e. Layer 7

What is

a. Layer 1

The physical layer is layer 1 of the OSI model:  deals with the physical connection between devices. It determines how data is transmitted over wires, cables, or radio waves.

500

What is another name for the OSI transport layer?

a. Layer 1
b. Layer 2
c. Layer 5
d. Layer 4
e. Layer 7

What is

d. Layer 4

The transport layer is layer 4 of the OSI model

manages end-to-end communication between devices. It ensures that data is delivered in the correct order and can handle errors and congestion.

500

The media access control method used depends on which two criteria?

a. Layer 3 IP Protocol

b. Media sharing

c. Topology

d. Transport layer protocol

What is 

b. Media sharing

c. Topology


The two criteria for determining the media access control method used are the type of media sharing involved and the topology.

500

Which topology displays networking device layer IP addresses?

a. physical topology

b. logical topology

c. IP address topology

what is 

b. logical topology

The logical topology shows the IP addresses assigned to device interfaces.

500

Which of the following are data link layer protocols? (Choose three)

a. 802.11

b. IP

c. Ethernet

d. PPP

e. UDP

What is 

a. 802.11 

c. Ethernet

d. PPP

802.11, Ethernet, and PPP are Layer 2 protocols. IP is Layer 3 and UDP is Layer 4.