WGU C172 NETWORK AND SECURITY – FOUNDATIONS
EXAM WITH ALL CORRECT & 100% VERIFIED
ANSWERS|LATEST ACTUAL EXAM|UPDATED TO PASS
The set of rules established for users to exchange information Correct answer-protocol
The network architecture used to interconnect the networking equipment Correct answer-
topology
Each station connected to the network is ensured access for transmission of its messages at regular
or fixed time intervals Correct answer-deterministic network
The computers share the media (coaxial cable) for data transmission Correct answer-bus topology
The coaxial cable used in a bus network. Correct answer-ThinNet
Twisted-pair cables connect the devices to a central hub or switch Correct answer-star topology
A multiport repeater device used at the center of a star topology Correct answer-hub
The data it receives is broadcast and seen by all devices connected to its ports. A hub. Correct
answer-multiport repeater
Transmission of data by a hub to all devices connected to its ports Correct answer-broadcast
Device used at the center of a star topology that forwards a frame it receives directly out the port
associated with its destination address Correct answer-switch
All networking devices are directly connected to each other, allows for full redundancy Correct
answer-mesh topology
The seven layers describing network functions Correct answer-OSI model
Provides the electrical and mechanical connection to the network (cabling, NICs). 1st OSI layer
Correct answer-Physical layer
Handles error recovery, flow control (synchronization), and sequencing (MAC, Ethernet). 2nd OSI
layer Correct answer-Data link layer
Accepts outgoing messages and combines messages or segments into packets, adding a header that
includes routing information (IP, IPX). 3rd OSI layer Correct answer-Network layer
Concerned with message integrity between source and destination (TCP, UDP). 4th OSI layer
Correct answer-Transport layer
Provides the control functions necessary to establish, manage, and terminate the connections (NSF,
SQL). 5th OSI layer Correct answer-Session layer
, Accepts and structures the messages for the application (ASCII, JPEG). 6th OSI layer Correct
answer-Presentation layer
Interacts with application programs that incorporate a communication component such as your
Internet browser and email (HTTP, FTP, SMTP). 7th OSI layer Correct answer-Application layer
Is the connection to the machine down? (layer 1)
Is the network down? (layer 3)
Is a service on a specific machine down? (layer 7) Correct answer-3 basic steps to isolate network
problem
The Ethernet LAN media-access method, carrier sense multiple access with collision detection
Correct answer-CSMA/CD
LAN protocol created in 1972 and standardized in 1980 using CSMA/CD. Correct answer-Ethernet
Contains the header, data, and trailer (the padding and 4-byte CRC frame check sequence) Correct
answer-Frame
Consists of the preamble, start frame delimiter, destination and source addresses, and length/type
field Correct answer-Frame header
Minimum length of an Ethernet frame Correct answer-64 bytes
Maximum length of an Ethernet frame Correct answer-1518 bytes
A unique 6-byte/48-bit address assigned by the vendor of the network interface card displayed in 12
hex digits Correct answer-MAC address
The first 3 bytes of the MAC address that identifies the manufacturer of the network hardware
Correct answer-Organizationally unique identifier (OUI)
Enables the MAC address information to be displayed from the command prompt Correct answer-
ipconfig /all
The agency that assigns IP addresses to computer networks Correct answer-IANA
Unique 32-bit address that identifies on which network the computer is located as well as
differentiates the computer from all other devices on the same network Correct answer-IP address
Governments, very large networks. Range from 0.0.0.0 to 126.255.255.255. Example: 44.x.x.x
Correct answer-Class A networks
Midsize companies, universities, and so on. Range from 128.0.0.0 to 191.255.255.255. Example:
128.123.x.x Correct answer-Class B networks
Small networks. Range from 192.0.0.0 to 223.255.255.255 Example: 192.168.1.x Correct answer-
Class C networks
Reserved for multicast groups. Range from 224.0.0.0 to 239.255.255.255. Example: 224.x.x.x
Correct answer-Class D networks
EXAM WITH ALL CORRECT & 100% VERIFIED
ANSWERS|LATEST ACTUAL EXAM|UPDATED TO PASS
The set of rules established for users to exchange information Correct answer-protocol
The network architecture used to interconnect the networking equipment Correct answer-
topology
Each station connected to the network is ensured access for transmission of its messages at regular
or fixed time intervals Correct answer-deterministic network
The computers share the media (coaxial cable) for data transmission Correct answer-bus topology
The coaxial cable used in a bus network. Correct answer-ThinNet
Twisted-pair cables connect the devices to a central hub or switch Correct answer-star topology
A multiport repeater device used at the center of a star topology Correct answer-hub
The data it receives is broadcast and seen by all devices connected to its ports. A hub. Correct
answer-multiport repeater
Transmission of data by a hub to all devices connected to its ports Correct answer-broadcast
Device used at the center of a star topology that forwards a frame it receives directly out the port
associated with its destination address Correct answer-switch
All networking devices are directly connected to each other, allows for full redundancy Correct
answer-mesh topology
The seven layers describing network functions Correct answer-OSI model
Provides the electrical and mechanical connection to the network (cabling, NICs). 1st OSI layer
Correct answer-Physical layer
Handles error recovery, flow control (synchronization), and sequencing (MAC, Ethernet). 2nd OSI
layer Correct answer-Data link layer
Accepts outgoing messages and combines messages or segments into packets, adding a header that
includes routing information (IP, IPX). 3rd OSI layer Correct answer-Network layer
Concerned with message integrity between source and destination (TCP, UDP). 4th OSI layer
Correct answer-Transport layer
Provides the control functions necessary to establish, manage, and terminate the connections (NSF,
SQL). 5th OSI layer Correct answer-Session layer
, Accepts and structures the messages for the application (ASCII, JPEG). 6th OSI layer Correct
answer-Presentation layer
Interacts with application programs that incorporate a communication component such as your
Internet browser and email (HTTP, FTP, SMTP). 7th OSI layer Correct answer-Application layer
Is the connection to the machine down? (layer 1)
Is the network down? (layer 3)
Is a service on a specific machine down? (layer 7) Correct answer-3 basic steps to isolate network
problem
The Ethernet LAN media-access method, carrier sense multiple access with collision detection
Correct answer-CSMA/CD
LAN protocol created in 1972 and standardized in 1980 using CSMA/CD. Correct answer-Ethernet
Contains the header, data, and trailer (the padding and 4-byte CRC frame check sequence) Correct
answer-Frame
Consists of the preamble, start frame delimiter, destination and source addresses, and length/type
field Correct answer-Frame header
Minimum length of an Ethernet frame Correct answer-64 bytes
Maximum length of an Ethernet frame Correct answer-1518 bytes
A unique 6-byte/48-bit address assigned by the vendor of the network interface card displayed in 12
hex digits Correct answer-MAC address
The first 3 bytes of the MAC address that identifies the manufacturer of the network hardware
Correct answer-Organizationally unique identifier (OUI)
Enables the MAC address information to be displayed from the command prompt Correct answer-
ipconfig /all
The agency that assigns IP addresses to computer networks Correct answer-IANA
Unique 32-bit address that identifies on which network the computer is located as well as
differentiates the computer from all other devices on the same network Correct answer-IP address
Governments, very large networks. Range from 0.0.0.0 to 126.255.255.255. Example: 44.x.x.x
Correct answer-Class A networks
Midsize companies, universities, and so on. Range from 128.0.0.0 to 191.255.255.255. Example:
128.123.x.x Correct answer-Class B networks
Small networks. Range from 192.0.0.0 to 223.255.255.255 Example: 192.168.1.x Correct answer-
Class C networks
Reserved for multicast groups. Range from 224.0.0.0 to 239.255.255.255. Example: 224.x.x.x
Correct answer-Class D networks
