Security Foundations - D481 UPDATED ACTUAL Exam Questions and CORRECT Answers

Security Foundations - D481 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
A set of protocols made up of four layers (Application, Transport, Network, Network Interface
Layer) used to connect network devices to each other - CORRECT ANSWER - 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 - CORRECT ANSWER -
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. - CORRECT ANSWER -
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 - CORRECT ANSWER -
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. - CORRECT ANSWER - 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. - CORRECT ANSWER - 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. -
CORRECT ANSWER - 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. - CORRECT ANSWER - 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. - CORRECT ANSWER - Transport Layer (OSI
Model)


Layer 5 of the OSI Model responsible for connection establishment, session maintenance, and
authentication. - CORRECT ANSWER - 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. - CORRECT ANSWER - 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. - CORRECT ANSWER -
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 - CORRECT ANSWER - 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. - CORRECT ANSWER - Router