SECURITY FOUNDATIONS - D481 EXAM 2024 LATEST QUESTIONS AND VERIFIED ANSWERS GRADED A++
A set of protocols made up of four layers (Application, Transport, Network, Network Interface Layer) used to connect network devices to each other
TCP/IP (Transmission Control Protocol/Internet Protocol)
T...
A set of protocols made up of four layers (Application, Transport, Network,
Network Interface Layer) used to connect network devices to each other
TCP/IP (Transmission Control Protocol/Internet Protocol)
TCP/IP model layer that establishes how data should be physically sent through
the network.
Ethernet
In conjunction with layers 1 PHYSICAL and 2 DATA LINK
Network Interface Layer (TCP/IP)
TCP/IP model layer that defines the logical transmission protocols for the whole
network.
- IP ( Internet Protocol)
- ARP ( Address Resolution Protocol)
- ICMP (Internet Contol Message Protocol)
- IGMP
in conjunction with layer 3 NETWORK of the OSI Model.
Network Layer (TCP/IP)
TCP/IP model layer that s responsible for the end-to-end transport of data. The
protocols that live in this layer are.
- TCP (Transmission Control Protocol)
,- UDP (User Datagram Protocol)
In conjunction with layer 4 TRANSPORT of the OSI Model
Transport Layer (TCP/IP)
TCP/IP model layer that is responsible for the communication protocols between
nodes. The protocols in this layer include.
- HTTP (Hyper Text Transfer Protocol)
- SSH (Secure Shell)
- FTTP
- Telnet
- NTP (Network Time Protocol)
- DHCP
- PING
In conjunction with Layers 5 SESSION, 6 PRESENTATION, AND 7 APPLICATION
of the OSI model.
Application Layer (TCP/IP)
Layer 1 of the OSI Model 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.
Physical Layer (OSI model)
Layer 2 of the OSI Model 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.
Data Link Layer (OSI Model)
Layer 3 of the OSI Model 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.
Network Layer (OSI Model)
, Layer 4 of the OSI Model provides services to the application layer and receives
services from the network layer and 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
data that are lost or corrupted (for example, TCP does this). This layer is often
called the heart of OSI.
Transport Layer (OSI Model)
Layer 5 of the OSI Model responsible for connection establishment, session
maintenance, and authentication.
Session Layer (OSI Model)
Layer 6 of the OSI Model 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.
Presentation Layer (OSI Model)
Layer 7 of the OSI Model responsible for network applications (like HTTP or FTP)
and their production of data to be transferred over the network.
Application layer (OSI model)
A device that is necessary for sending and receiving data. They allow computers
to transport digital information over analog lines such as phone or cable lines.
The three types of these devices include cable, DSL, and satellite.
They operate at Level 1 and 2 of the OSI Model
Modem
A device that serves as the point connection between two or more networks that
forwards data packets between the networks.
Operates at level 3 of the OSI Model.
Router
A device used to connect devices in a specific network and allows them to
communicate efficiently withn the network. This device is a more complex
version of a hub as they have the capability to add security measures and
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