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CCNA 4 Chapter 5 v5 exam answers 2014

January 15, 2014 | Filed under: CCNA 4 Connecting Networks v50 Answers 201! and tagged wit": ccna

4 c"a#ter 5 v5, CCNA 4 C"a#ter 5 v5 e$a% answers 201!, cisco ccna v5 answers routing and switc"ing,

connecting networks answers v5, e$a% ccna v5 answers 

&"are 

CCCNA 4 Chapter 5 v5 exam answers R&S Connecting Networks

C'&C( CCNA AN&)*+& 5 +(-.'N/ AN &)'.C'N/ .*&. -*&.'(N AN AN&)*+&

201!32014

1 .y#ically, w"ic" network device would e used to #eror% NA. or a cor#orate environ%ent6

C7 server 

"ost device

router

server 

switc"

2 )"at is t"e grou# o #ulic '7v4 addresses used on a NA.3enaled router known as6

outside local addresses

inside local addresses

inside go!a addresses

outside gloal addresses

! )"en NA. is e%#loyed in a s%all oice, w"ic" address ty#e is ty#ically used or "osts on t"e local

8AN6

private "# addresses

gloal #ulic '7 addresses

'nternet3routale addresses

 ot" #rivate and #ulic '7 addresses

4 )"ic" version o NA. allows %any "osts inside a #rivate network to si%ultaneously use a single inside

gloal address or connecting to t"e 'nternet6

#A$

static NA.dyna%ic NA.

 #ort orwarding

5 )"ic" ty#e o NA. %a#s a single inside local address to a single inside gloal address6

dyna%ic

static

 #ort address translation

overloading

9 &everal key servers in an organiation %ust e directly accessile ro% t"e 'nternet )"at addressing

 #olicy s"ould e i%#le%ented or t"ese servers6

-se dyna%ic NA. to #rovide addresses or t"e servers

1

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7lace all o t"e servers in t"eir own Class C #rivate sunet

-se C7 to assign addresses ro% t"e #ool o Class ; addresses

Assign static interna addresses and pu!ic externa addresses to each o% the servers

< )"at is a disadvantage o NA.6

$here is no endtoend addressing'

."e router does not need to alter t"e c"ecksu% o t"e '7v4 #ackets

."e internal "osts "ave to use a single #ulic '7v4 address or e$ternal co%%unication

."e costs o readdressing "osts can e signiicant or a #ulicly addressed network

=

+eer to t"e e$"iit )"at "as to e done in order to co%#lete t"e static NA. coniguration on +16

+1 s"ould e conigured wit" t"e co%%and i# nat inside source static 20>1952001 1>219=1111

+1 s"ould e conigured wit" t"e co%%and i# nat inside source static 20>195200200 1>219=1111

"nter%ace S0(0(0 shoud !e con%igured with the command ip nat outside'

'nterace Fa0?0 s"ould e conigured wit" t"e co%%and no i# nat inside

2

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>

+eer to t"e e$"iit +1 is conigured or NA. as dis#layed )"at is wrong wit" t"e coniguration6

Access3list 1 is %isconigured

NA$#))*2 is not !ound to AC* 1'

'nterace Fa0?0 s"ould e identiied as an outside NA. interace

."e NA. #ool is incorrect

10 )"ic" state%ent accurately descries dyna%ic NA.6't always %a#s a #rivate '7 address to a #ulic '7 address

"t provides an automated mapping o% inside oca to inside go!a "# addresses'

't #rovides a %a##ing o internal "ost na%es to '7 addresses

't dyna%ically #rovides '7 addressing to internal "osts

11 A network ad%inistrator conigures t"e order router wit" t"e co%%and +1@conigB i# nat inside

source list 4 #ool cor# )"at is reuired to e conigured in order or t"is #articular co%%and to e

unctional6

a NA$ poo named corp that de%ines the starting and ending pu!ic "# addresses

an access list na%ed cor# t"at deines t"e #rivate addresses t"at are aected y NA.an access list nu%ered 4 t"at deines t"e starting and ending #ulic '7 addresses

i# nat outside to e enaled on t"e interace t"at connects to t"e 8AN aected y t"e NA.

a 8AN na%ed cor# to e enaled and active and routed y +1

12 )"en dyna%ic NA. wit"out overloading is eing used, w"at "a##ens i seven users atte%#t to access

a #ulic server on t"e 'nternet w"en only si$ addresses are availale in t"e NA. #ool6

 No users can access t"e server

$he re+uest to the server %or the seventh user %ais'

All users can access t"e server

."e irst user gets disconnected w"en t"e sevent" user %akes t"e reuest

!

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1! A network engineer "as conigured a router wit" t"e co%%and i# nat inside source list 4 #ool cor#

overload )"y did t"e engineer use t"e overload o#tion6

$he compan, has more private "# addresses than avaia!e pu!ic "# addresses'

."e co%#any needs to "ave %ore #ulic '7 addresses availale to e used on t"e 'nternet

."e co%#any router %ust t"rottle or uer traic ecause t"e #rocessing #ower o t"e router is not

enoug" to "andle t"e nor%al load o e$ternal3ound 'nternet traic

."e co%#any "as a s%all nu%er o servers t"at s"ould e accessile y clients ro% t"e 'nternet

14

+eer to t"e e$"iit )"at will e t"e eect o entering t"e co%%and t"at is s"own in t"e e$"iit on +2 as

 #art o t"e dyna%ic NA. coniguration6

't will deine a #ool o addresses or translation

't will identiy an inside NA. interace

"t wi !ind NA$#))*1 with AC* 1''t will deine t"e source AC8 or t"e e$ternal interace

15 )"ic" coniguration would e a##ro#riate or a s%all usiness t"at "as t"e #ulic '7 address o

20>195200225?!0 assigned to t"e e$ternal interace on t"e router t"at connects to t"e 'nternet6

accessist 1 permit 10'0'0'0 0'255'255'255

ip nat inside source ist 1 inter%ace seria 0(0(0 overoad

access3list 1 #er%it 10000 0255255255

i# nat #ool co%# 1>2021 1>202= net%ask 255255255240i# nat inside source list 1 #ool co%#

access3list 1 #er%it 10000 0255255255

i# nat #ool co%# 1>2021 1>202= net%ask 255255255240

i# nat inside source list 1 #ool co%# overload

access3list 1 #er%it 10000 0255255255

i# nat #ool co%# 1>2021 1>202= net%ask 255255255240

i# nat inside source list 1 #ool co%# overload

i# nat inside source static 10005 20>195200225

19 )"at are two reuired ste#s to conigure 7A.6 @C"oose two

-e%ine a poo o% go!a addresses to !e used %or overoad transation'

eine a standard access list denying t"e addresses t"at s"ould e translated

eine t"e range o #orts to e used

"denti%, the inside inter%ace'

eine a standard access list t"at allow t"e outside gloal addresses to e used

4

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1<

+eer to t"e e$"iit )"at is t"e #ur#ose o t"e co%%and %arked wit" an arrow s"own in t"e #artial

coniguration out#ut o a Cisco roadand router6de%ines which addresses can !e transated

deines w"ic" addresses are allowed into t"e router 

deines w"ic" addresses are assigned to a NA. #ool

deines w"ic" addresses are allowed out o t"e router 

1= )"at is t"e #ur#ose o #ort orwarding6

#ort %orwarding aows an externa user to reach a service on a private "#v4 address that is ocated

inside a *AN'

7ort orwarding allows users to reac" servers on t"e 'nternet t"at are not using standard #ort nu%ers

7ort orwarding allows an internal user to reac" a service on a #ulic '7v4 address t"at is located outside

a 8AN

7ort orwarding allows or translating inside local '7 addresses to outside local addresses

1> )"at is a c"aracteristic o uniue local addresses6

$he, aow sites to !e com!ined without creating an, address con%icts'

."ey are designed to i%#rove t"e security o '7v9 networks

."eir i%#le%entation de#ends on '&7s #roviding t"e service

."ey are deined in +FC !>2<

20

+eer to t"e e$"iit ;ased on t"e out#ut t"at is s"own, w"at ty#e o NA. "as een i%#le%ented6

dyna%ic NA. wit" a #ool o two #ulic '7 addresses

#A$ using an externa inter%ace

static NA. wit" one entry

static NA. wit" a NA. #ool

5

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21

+eer to t"e e$"iit ."e NA. coniguration a##lied to t"e router is as ollows:

*+tr@conigB access3list 1 #er%it 10000 0255255255

*+tr@conigB i# nat #ool cor# 20>1952019 20>195201!0 net%ask 255255255224

*+tr@conigB i# nat inside source list 1 #ool cor# overload

*+tr@conigB i# nat inside source static 10101055 20>1952014

*+tr@conigB interace gigaitet"ernet 0?0

*+tr@conig3iB i# nat inside

*+tr@conig3iB interace serial 0?0?0

*+tr@conig3iB i# nat outside

22 ;ased on t"e coniguration and t"e out#ut s"own, w"at can e deter%ined aout t"e NA. status wit"in

t"e organiation6

 NA. is working&tatic NA. is working, ut dyna%ic NA. is not

yna%ic NA. is working, ut static NA. is not

Not enough in%ormation is given to determine i% !oth static and d,namic NA$ are working'

9

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2!

(#en t"e 7. Activity 7eror% t"e tasks in t"e activity instructions and t"en answer t"e uestion

)"at #role% is causing 7C3A to e unale to co%%unicate wit" t"e 'nternet6

."e static route s"ould not reerence t"e interace, ut t"e outside address instead

."is router s"ould e conigured to use static NA. instead o 7A.

."e i# nat inside source co%%and reers to t"e wrong interace

."e access list used in t"e NA. #rocess is reerencing t"e wrong sunet

$he NA$ inter%aces are not correct, assigned'

<

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24

#ace the options in the %oowing order.

not scored /

step 5

step 2

step 4step 1

step

25

)"at are two o t"e reuired ste#s to conigure 7A.6 @C"oose two

Create a standard access list to deine a##lications t"at s"ould e translated

'dentiy t"e inside interaceD

eine t"e range o source #orts to e used

eine t"e "ello and interval ti%ers to %atc" t"e adEacent neig"or router

-e%ine a poo o% go!a addresses to !e used %or overoad transation'

=