OSI v1
What is another name for the OSI data link layer?
-Layer 1
-Layer 2
-Layer 3
-Layer 4
-Layer 5
What is
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.
What is another name for the OSI network link layer?
-Layer 1
-Layer 2
-Layer 3
-Layer 4
-Layer 5
What is
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.
What is the responsibility of the MAC sublayer?
adds layer 3 address to the frame
communicates with the network layer (layer 3)
provides the method to get the frame on and off the media
transmits the bits on the media
What is
The MAC sublayer of the data link layer is responsible for getting frames on and off the media
Which organization defines standards for the network access layer (i.e., the OSI physical and data link layers)?
Cisco
IANA
IEEE
IETF
What is
IEEE
The IEEE defines standards for the TCP/IP network access layer, which are the OSI physical and data link layers.
Which LAN topology is a hybrid topology?
bus
extended star
ring
star
What is
extended star
The extended star topology is considered a hybrid topology because it combines multiple star topologies.
What is another name for the OSI application layer?
-Layer 1
-Layer 2
-Layer 3
-Layer 4
-Layer 7
What is
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.
What is another name for the OSI presentation layer?
-Layer 1
-Layer 2
-Layer 3
-Layer 4
-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.
The IEEE 802 LAN/MAN data link layer consists of which two sublayers? (Choose two.)
Network Control Protocol
Logical Link Control
Media Access Control
Link Control Protocol
What is
Logical Link Control
&
Media Access Control
The data link layer consists of two sublayers
Which media access control method is used in legacy Ethernet LANs?
carrier sense multiple access/collision annoyance
carrier sense multiple access/collision avoidance
carrier sense multiple access/collision destruction
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.
The collision invokes a random ___algorithm.
jam
backoff
segment
what is
backoff
Back-off algorithm is a collision resolution mechanism which is used in random access MAC protocols (CSMA/CD).
What is another name for the OSI session layer?
-Layer 1
-Layer 2
-Layer 5
-Layer 4
-Layer 7
What is
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.
What is another name for the OSI data link layer?
-Layer 1
-Layer 2
-Layer 3
-Layer 4
-Layer 5
What is
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.
What is the responsibility of the MAC sublayer?
adds layer 3 addresses to the frame
communicates with the network layer (layer 3)
provides the method to get the frame on and off the media
transmits the bits on the media
What
The MAC sublayer of the data link is responsible for getting frames on and off the media.
Which duplex communication method is used in WLANs?
full-duplex
half-duplex
simplex
what is
Wireless LANs (WLANs) only support half-duplex because only one device can access the media at a time.
What does the data link layer add to a Layer 3 packet to create a frame? (Choose two.)
flags
header
trailer
sequence number
What is
header
&
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).
What is another name for the OSI transport layer?
-Layer 1
-Layer 2
-Layer 5
-Layer 4
-Layer 7
What is
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.
What is another name for the OSI application layer?
-Layer 1
-Layer 2
-Layer 3
-Layer 4
-Layer 7
What is
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.
What Layer 2 function does a router perform? (Choose three.)
Accepts a frame from a medium
De-encapsulates the frame
Re-encapsulates the packet into a new frame
type of data
What is
Accepts a frame from a medium
De-encapsulates the frame
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.What kind of network would use point-to-point, hub and spoke, or mesh topologies?
PAN
LAN
WLAN
WAN
what is
Wide Area Networks (WANs) come in many topologies, to include point-to-point, hub-and-spoke, and mesh.
What is the function of the last field in a data link layer frame?
To determine whether the frame experienced transmission errors
to identify special flow control services such as quality of service (QoS)
To identify the beginning and ends limits of the fram
What is
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.
What is another name for the OSI physical layer?
-Layer 1
-Layer 2
-Layer 5
-Layer 4
-Layer 7
What is
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.
What is another name for the OSI transport layer?
-Layer 1
-Layer 2
-Layer 5
-Layer 4
-Layer 7
What is
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.
The media access control method used depends on which two criteria?
Layer 3 IP Protocol
Media sharing
Topology
Transport layer protocol
What is
Media sharing
&
Topology
The two criteria for determining the media access control method used are the type of media sharing involved and the topology.
Which topology displays networking device layer IP addresses?
physical topology
logical topology
IP address topology
what is
The logical topology shows the IP addresses assigned to device interfaces.
Which of the following are data link layer protocols? (Choose three)
802.11
IP
Ethernet
PPP
UDP
What is
802.11
Ethernet
PPP
802.11, Ethernet, and PPP are Layer 2 protocols. IP is Layer 3 and UDP is Layer 4.