NETWORKS - D325 QUESTIONS AND
ANSWERS
166to6612666-66answer--Class66A66address66range
12866to6619166-66answer--Class66B66address66aange
19266to6622366-66answer--Class66C66address66range
10.0.066to6610.255.255.25566-66answer--Class66A66private66address66range
172.16.0.066to66172.31.255.25566-66answer--Class66B66private66address66range
192.168.0.066to66192.168.255.25566-66answer--Class66C66private66address66range
The66router66translates66between66the66private66and66public66addresses66using66a66proc
ess66called66________________66________________66________________.66-
66answer--Network66Address66Translation66(NAT)
Internet66access66can66be66facilitated66for66hosts66using66a66private66addressing66schem
e66in66two66ways:66-66answer--
NAT66(Network66Address66Translation)66or66Proxy66Server
An66intermediate66server66that66retrieves66data66from66an66Internet66source,66such66as66
a66webpage,66on66behalf66of66a66user.66They66act66as66additional66security66boundaries6
6protecting66users66from66malicious66activity66on66the66internet.66-66answer--
Proxy66Server
Developed66by66Microsoft66as66a66means66for66clients66that66could66not66contact66DHCP
66server66to66communicate66on66the66local66network.66If66a66Windows66host66does66not66
receive66response66from66a66DHCP66server66within66a66given66time66frame,66if66selects66
an66address66at66random66from66the66range66169.254.1.166to66169.254.254.254.66-
66answer--APIPA66(Automatic66Private66IP66Addressing)
224.0.0.066to66239.255.255.25566-66answer--Class66D66address66range
240.0.0.066to66255.255.255.25566-66answer--Class66E66address66range
Class66___66are66used66for66multicasting66-66answer--Class66D
, Class66___66are66reserved66from66experiments66use66and66testing66-66answer--Class66E
127.0.0.066to66127.255.255.25566-66answer--Loopback66address66range
Used66when66a66specific66address66unknown.66This66is66typically66used66as66a66source6
6address66by66a66client66seeking66a66DHCP66lease.66-66answer--0.0.0.0/8
Used66to66broadcast66to66the66local66network66when66the66local66network66address66is66
not66known.66-66answer--255.255.255.255
Set66a66side66for66a66variety66if66special66prupose66-66answer--100.64.0.0/10
192.0.0.0/24
192.88.99.0/24
198.18.0.0./15
Set66a66side66for66use66in66documentation66and66examples66-66answer--192.0.2.0/24
198.51.100.0/24
203.0.113.0/24
The66_______66table66tracks66layer66266and66implements66it66as66content66addressable6
6memory66(CAM).66It66is66a66special66type66of66memory,66optimized66for66searching,66rat
her66than66random66access.66-66answer--CAM
IEEE66802.3x66________66_______________66allows66a66server66to66instruct66the66swit
ch66to66pause66traffic66temporarily66to66avoid66overwhelming66its66butter66and66causing66
it66to66drop66frames.66-66answer--Flow66control
What66is66the66purpose66of66subnetting?66-66answer--Layer66366segments
A66________66_____________66configuration66validates66the66MAC66address66of66end6
6systems66that66connect66to66switch66port.66In66most66scenarios,66the66MAC66address66
of66servers66and66workstations66does66not66change66often.66-66answer--Port66Security
________66are66useful66to66divide66a66network66into66logically66distinct66zones66for66sec
urity66and66administrative66control.66-66answer--VLANs
IPv466____________________66allows66one66host66on66the66Internet66(or66private66net
work)66to66send66content66to66other66hosts66that66have66identified66themselves66as66inte
rested66in66receiving66the66originating66host's66content.66-66answer--multicasting
________66____:66255.0.0.0(/
8).66The66first66octet66for66_________66____66is66from66166-
66126.66The66default66masks66reengineer66the66classful66scheme66but66allow66network66
designers66to66create66subnets66of66different66numbers.66-66answer--Class66A
ANSWERS
166to6612666-66answer--Class66A66address66range
12866to6619166-66answer--Class66B66address66aange
19266to6622366-66answer--Class66C66address66range
10.0.066to6610.255.255.25566-66answer--Class66A66private66address66range
172.16.0.066to66172.31.255.25566-66answer--Class66B66private66address66range
192.168.0.066to66192.168.255.25566-66answer--Class66C66private66address66range
The66router66translates66between66the66private66and66public66addresses66using66a66proc
ess66called66________________66________________66________________.66-
66answer--Network66Address66Translation66(NAT)
Internet66access66can66be66facilitated66for66hosts66using66a66private66addressing66schem
e66in66two66ways:66-66answer--
NAT66(Network66Address66Translation)66or66Proxy66Server
An66intermediate66server66that66retrieves66data66from66an66Internet66source,66such66as66
a66webpage,66on66behalf66of66a66user.66They66act66as66additional66security66boundaries6
6protecting66users66from66malicious66activity66on66the66internet.66-66answer--
Proxy66Server
Developed66by66Microsoft66as66a66means66for66clients66that66could66not66contact66DHCP
66server66to66communicate66on66the66local66network.66If66a66Windows66host66does66not66
receive66response66from66a66DHCP66server66within66a66given66time66frame,66if66selects66
an66address66at66random66from66the66range66169.254.1.166to66169.254.254.254.66-
66answer--APIPA66(Automatic66Private66IP66Addressing)
224.0.0.066to66239.255.255.25566-66answer--Class66D66address66range
240.0.0.066to66255.255.255.25566-66answer--Class66E66address66range
Class66___66are66used66for66multicasting66-66answer--Class66D
, Class66___66are66reserved66from66experiments66use66and66testing66-66answer--Class66E
127.0.0.066to66127.255.255.25566-66answer--Loopback66address66range
Used66when66a66specific66address66unknown.66This66is66typically66used66as66a66source6
6address66by66a66client66seeking66a66DHCP66lease.66-66answer--0.0.0.0/8
Used66to66broadcast66to66the66local66network66when66the66local66network66address66is66
not66known.66-66answer--255.255.255.255
Set66a66side66for66a66variety66if66special66prupose66-66answer--100.64.0.0/10
192.0.0.0/24
192.88.99.0/24
198.18.0.0./15
Set66a66side66for66use66in66documentation66and66examples66-66answer--192.0.2.0/24
198.51.100.0/24
203.0.113.0/24
The66_______66table66tracks66layer66266and66implements66it66as66content66addressable6
6memory66(CAM).66It66is66a66special66type66of66memory,66optimized66for66searching,66rat
her66than66random66access.66-66answer--CAM
IEEE66802.3x66________66_______________66allows66a66server66to66instruct66the66swit
ch66to66pause66traffic66temporarily66to66avoid66overwhelming66its66butter66and66causing66
it66to66drop66frames.66-66answer--Flow66control
What66is66the66purpose66of66subnetting?66-66answer--Layer66366segments
A66________66_____________66configuration66validates66the66MAC66address66of66end6
6systems66that66connect66to66switch66port.66In66most66scenarios,66the66MAC66address66
of66servers66and66workstations66does66not66change66often.66-66answer--Port66Security
________66are66useful66to66divide66a66network66into66logically66distinct66zones66for66sec
urity66and66administrative66control.66-66answer--VLANs
IPv466____________________66allows66one66host66on66the66Internet66(or66private66net
work)66to66send66content66to66other66hosts66that66have66identified66themselves66as66inte
rested66in66receiving66the66originating66host's66content.66-66answer--multicasting
________66____:66255.0.0.0(/
8).66The66first66octet66for66_________66____66is66from66166-
66126.66The66default66masks66reengineer66the66classful66scheme66but66allow66network66
designers66to66create66subnets66of66different66numbers.66-66answer--Class66A