WGU C172 Network and Security – Foundations Exam Questions With Correct Answers

WGU C172 Network and Security –
Foundations Exam Questions With
Correct Answers
protocol |- |CORRECT |ANSWER✔✔-The |set |of |rules |established |for |users |to |exchange |
information



topology |- |CORRECT |ANSWER✔✔-The |network |architecture |used |to |interconnect |the |
networking |equipment



deterministic |network |- |CORRECT |ANSWER✔✔-Each |station |connected |to |the |network |is |
ensured |access |for |transmission |of |its |messages |at |regular |or |fixed |time |intervals



bus |topology |- |CORRECT |ANSWER✔✔-The |computers |share |the |media |(coaxial |cable) |for |data |
transmission



ThinNet |- |CORRECT |ANSWER✔✔-The |coaxial |cable |used |in |a |bus |network.



star |topology |- |CORRECT |ANSWER✔✔-Twisted-pair |cables |connect |the |devices |to |a |central |
hub |or |switch



hub |- |CORRECT |ANSWER✔✔-A |multiport |repeater |device |used |at |the |center |of |a |star |topology



multiport |repeater |- |CORRECT |ANSWER✔✔-The |data |it |receives |is |broadcast |and |seen |by |all |
devices |connected |to |its |ports. |A |hub.



broadcast |- |CORRECT |ANSWER✔✔-Transmission |of |data |by |a |hub |to |all |devices |connected |to |
its |ports

,switch |- |CORRECT |ANSWER✔✔-Device |used |at |the |center |of |a |star |topology |that |forwards |a |
frame |it |receives |directly |out |the |port |associated |with |its |destination |address



mesh |topology |- |CORRECT |ANSWER✔✔-All |networking |devices |are |directly |connected |to |each |
other, |allows |for |full |redundancy



OSI |model |- |CORRECT |ANSWER✔✔-The |seven |layers |describing |network |functions



Physical |layer |- |CORRECT |ANSWER✔✔-Provides |the |electrical |and |mechanical |connection |to |
the |network |(cabling, |NICs). |1st |OSI |layer



Data |link |layer |- |CORRECT |ANSWER✔✔-Handles |error |recovery, |flow |control |(synchronization),
|and |sequencing |(MAC, |Ethernet). |2nd |OSI |layer




Network |layer |- |CORRECT |ANSWER✔✔-Accepts |outgoing |messages |and |combines |messages |or
|segments |into |packets, |adding |a |header |that |includes |routing |information |(IP, |IPX). |3rd |OSI |


layer



Transport |layer |- |CORRECT |ANSWER✔✔-Concerned |with |message |integrity |between |source |
and |destination |(TCP, |UDP). |4th |OSI |layer



Session |layer |- |CORRECT |ANSWER✔✔-Provides |the |control |functions |necessary |to |establish, |
manage, |and |terminate |the |connections |(NSF, |SQL). |5th |OSI |layer



Presentation |layer |- |CORRECT |ANSWER✔✔-Accepts |and |structures |the |messages |for |the |
application |(ASCII, |JPEG). |6th |OSI |layer

, Application |layer |- |CORRECT |ANSWER✔✔-Interacts |with |application |programs |that |incorporate
|a |communication |component |such |as |your |Internet |browser |and |email |(HTTP, |FTP, |SMTP). |7th


|OSI |layer




3 |basic |steps |to |isolate |network |problem |- |CORRECT |ANSWER✔✔-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)



CSMA/CD |- |CORRECT |ANSWER✔✔-The |Ethernet |LAN |media-access |method, |carrier |sense |
multiple |access |with |collision |detection



Ethernet |- |CORRECT |ANSWER✔✔-LAN |protocol |created |in |1972 |and |standardized |in |1980 |
using |CSMA/CD.



Frame |- |CORRECT |ANSWER✔✔-Contains |the |header, |data, |and |trailer |(the |padding |and |4-byte |
CRC |frame |check |sequence)



Frame |header |- |CORRECT |ANSWER✔✔-Consists |of |the |preamble, |start |frame |delimiter, |
destination |and |source |addresses, |and |length/type |field



64 |bytes |- |CORRECT |ANSWER✔✔-Minimum |length |of |an |Ethernet |frame



1518 |bytes |- |CORRECT |ANSWER✔✔-Maximum |length |of |an |Ethernet |frame



MAC |address |- |CORRECT |ANSWER✔✔-A |unique |6-byte/48-bit |address |assigned |by |the |vendor |
of |the |network |interface |card |displayed |in |12 |hex |digits