WGU C172 INTRODUCTION TO
NETWORKING CONCEPTS Q&A/100%
VERIFIED SOLUTION/2023(UPDATED)
TCP/IP - Answer stands for transmission control
... [Show More] protocol/internet protocol and is a
set of protocols used to connect network devices to each other.
Application Layer - Answer This layer is responsible for the communication protocols
between nodes. The protocols in this layer include hypertext transfer protocol (HTTP
and HTTPS), Secure Shell (SSH), and network time protocol (NTP), among many
others.
Transport Layer - Answer This layer is responsible for the end-to-end transport of
data. The protocols that live in this layer are transmission control protocol (TCP) and
user datagram protocol (UDP).
Network Layer - Answer This layer defines the logical transmission protocols for the
whole network. The main protocols that live in this layer are internet protocol (IP),
internet control message protocol (ICMP), and address resolution protocol (ARP).
Network Interface Layer - Answer This TCP/IP model layer establishes how data
should be physically sent through the network.
OSI (Open System Interconnection) model - Answer model consists of a seven-layer
architecture that organizes the sending of data from hosts across a network
OSI (Open System Interconnection) model - Answer was developed by the
International Standards Organization (ISO) after the TCP/IP model to provide greater
granularity of networking assignments within the model.
Physical Layer - Answer This layer is responsible for the physical connections of the
devices in the network. This layer is implemented through the use of devices such as
hubs, repeaters, modem devices, and physical cabling.
Data Link Layer - Answer This layer is responsible for the error-free delivery of data
to the receiving device or node. This layer is implemented through the use of devices
such as switches and bridge devices, as well as anything with a network interface,
like wireless or wired network cards.
Network Layer - Answer This layer is responsible for the transmission of data
between hosts in different networks as well as routing of data packets. This layer is
implemented through the use of devices such as routers and some switches.
Transport Layer - Answer This layer provides services to the application layer and
receives services from the network layer. It is responsible for the reliable delivery of
data. It segments and reassembles data in the correct order for it to be sent to the
receiving device. It may also handle the reliable delivery of data and any retries of
WGU C172 INTRODUCTION TO
NETWORKING CONCEPTS Q&A/100%
VERIFIED SOLUTION/2023(UPDATED)
data that are lost or corrupted (for example, TCP does this). This layer is often called
the heart of OSI.
Session Layer - Answer This layer is responsible for connection establishment,
session maintenance, and authentication.
Presentation Layer - Answer This layer is responsible for translating data from the
application layer into the format required to transmit the data over the network as
well as encrypting the data for security if encryption is used.
Application Layer - Answer This layer is responsible for network applications (like
HTTP or FTP) and their production of data to be transferred over the network.
Layer 1 Physical - Answer Receives the frames and data and sends them via the
local media (copper wires, fiber-optic cables, etc.) to the switches, routers, etc.,
along the network path. All of this takes a matter of microseconds to achieve.
Layer 2 Data Link - Answer Receives the packets and adds physical addressing by
adding sender and receiver MAC addresses to each data packet. This information
forms a unit called a frame.
Layer 3 Network Layer - Answer Receives the segments and transmits them across
the network as packets. As you are accessing the website, this Layer adds the
source and destination IP addresses to each individual data packet. The destination
IP address will be the router on the network that will move data off the local network.
The series of routers between that router and the destination server will determine
how the packet is moved across various networks between them.
Layer 4 Transport - Answer Data is transferred and is then segmented and
numbered to send the data across the network in sizes the network can handle
(typically around 1,500 bytes maximum) and to reassemble it in the correct order by
the webserver.
Layer 5 Session - Answer Establishes the connection between your laptop and
WGU's server and maintains it while you accomplish your tasks on the website.
Layer 6 Presentation - Answer The command is then sent to this Layer to be
encrypted as it is sent (and decrypted when received by the webserver).
Layer 7 Application - Answer You open a web browser on your laptop and type
www.wgu.edu into the search bar.
WGU C172 INTRODUCTION TO
NETWORKING CONCEPTS Q&A/100%
VERIFIED SOLUTION/2023(UPDATED)
Modem - Answer A device necessary for sending and receiving data. Allows
computers to transport digital information over analog lines, such as phone or cable
lines.
Router - Answer a point of connection between two or more networks that forwards
dat packets between the network [Show Less]