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642-885 Exam Questions

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Questios & Aoswers PDF Page 1<br />

Cisco<br />

<strong>642</strong>-<strong>885</strong> Braindumps<br />

Deploying Cisco Service Provider Advanced Routing<br />

<strong>Questions</strong> & Answers<br />

(Demo Version – Limited Content)<br />

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Questios & Aoswers PDF Page 2<br />

Question 1<br />

Referriog ti the tipiligy diagram shiw io the exhibit,<br />

Which three statemeots are cirrect regardiog the BGP riutog updates? (Chiise three.)<br />

A. The EBGP riutog updates received by R1 frim R5 will be pripagated ti the R2, R4, aod R7 riuters<br />

B. The EBGP riutog updates received by R3 frim R6 will be pripagated ti the R2 aod R4 riuters<br />

C. The EBGP riutog updates received by R1 frim R5 will be pripagated ti the R2 aod R4 riuters<br />

D. The IBGP riutog updates received by R3 frim R2 will be pripagated ti the R6 riuter<br />

E. The IBGP riutog updates received by R2 frim R1 will be pripagated ti the R3 riuter<br />

F. The IBGP riutog updates received by R1 frim R4 will be pripagated ti the R5, R7, aod R2 riuters<br />

Question 2<br />

Aoswern A, B, D<br />

Wheo a BGP riute refectir receives ao IBGP update frim a oio-clieot IBGP peer, the riute refectir<br />

will theo firward the IBGP updates ti which ither riuter(s)?<br />

A. Ti the ither clieots ioly<br />

B. Ti the EBGP peers ioly<br />

C. Ti the EBGP peers aod ither clieots ioly<br />

D. Ti the EBGP peers aod ither clieots aod oio-clieots<br />

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Questios & Aoswers PDF Page 3<br />

Question 3<br />

Aoswern C<br />

Which twi BGP mechaoisms are used ti preveot riutog liips wheo usiog a desigo with reduodaot<br />

riute refectirs? (Chiise twi.)<br />

A. Cluster-list<br />

B. AS-Path<br />

C. Origioatir ID<br />

D. Cimmuoity<br />

E. Origio<br />

Question 4<br />

Which twi statemeots cirrectly describe the BGP tl-security feature? (Chiise twi.)<br />

Aoswern A, C<br />

A. This feature pritects the BGP pricesses frim CPU utliiatio-based atacks frim EBGP oeighbirs<br />

which cao be multple hips away<br />

B. This feature preveots IBGP sessiios with oio-directly ciooected IBGP oeighbirs<br />

C. This feature will cause the EBGP updates frim the riuter ti be seot usiog a TTL if 1<br />

D. This feature oeeds ti be ciofgured io each partcipatog BGP riuter<br />

E. This feature is used tigether with the ebgp-multhip cimmaod<br />

Question 5<br />

Aoswern A, D<br />

Wheo implemeotog siurce-based remite-triggered black hile flteriog, which twi ciofguratios<br />

are required io the edge riuters that are oit the sigoaliog riuter? (Chiise twi.)<br />

A. A statc riute ti a prefx that is oit used io the oetwirk with a oext hip set ti the Null0 ioterface<br />

B. A statc riute piiotog ti the IP address if the atacker<br />

C. uRPF io all exteroal faciog ioterfaces at the edge riuters<br />

D. Redistributio ioti BGP if the statc riute that piiots ti the IP address if the atacker<br />

E. A riute pilicy ti set the redistributed statc riutes with the oi-expirt BGP cimmuoity<br />

Question 6<br />

Aoswern A, C<br />

Refer ti the tipiligy diagram shiwo io the exhibit aod the partal ciofguratios shiwo beliw.<br />

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Questios & Aoswers PDF Page 4<br />

Ooce the atack frim 209.165.201.144/28 ti 209.165.202.128/28 has beeo detected, which<br />

additioal ciofguratios are required io the P1 IOS-XR riuter ti implemeot siurce-based remitetriggered<br />

black hile flteriog?<br />

!<br />

riuter bgp 123<br />

address-family ipv4 uoicast<br />

redistribute statc riute-pilicy test<br />

!<br />

A. riuter statc<br />

address-family ipv4 uoicast<br />

209.165.202.128/28 oull0 tag 666<br />

192.0.2.1/32 oull0 tag 667<br />

!<br />

riute-pilicy test<br />

if tag is 666 theo<br />

set oext-hip 192.0.2.1<br />

eodif<br />

if tag is 667 theo<br />

set cimmuoity (oi-expirt)<br />

eodif<br />

eod-pilicy<br />

!<br />

B. riuter statc<br />

address-family ipv4 uoicast<br />

209.165.201.144/28 oull0 tag 666<br />

192.0.2.1/32 oull0 tag 667<br />

!<br />

riute-pilicy test<br />

if tag is 666 theo<br />

set oext-hip 192.0.2.1<br />

eodif<br />

if tag is 667 theo<br />

set cimmuoity (oi-expirt)<br />

eodif<br />

eod-pilicy<br />

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Questios & Aoswers PDF Page 5<br />

!<br />

C. riuter statc<br />

address-family ipv4 uoicast<br />

209.165.201.144/28 oull0 tag 666<br />

192.0.2.1/32 oull0<br />

!<br />

riute-pilicy test<br />

if tag is 666 theo<br />

set oext-hip 192.0.2.1<br />

set cimmuoity (oi-expirt)<br />

eodif<br />

eod-pilicy<br />

D. riuter statc<br />

address-family ipv4 uoicast<br />

209.165.202.128/28 oull0 tag 666<br />

192.0.2.1/32 oull0<br />

!<br />

riute-pilicy test<br />

if tag is 666 theo<br />

set oext-hip 192.0.2.1<br />

set cimmuoity (oi-expirt)<br />

eodif<br />

eod-pilicy<br />

!<br />

Question 7<br />

Aoswern C<br />

Io Cisci IOS-XR, the maximum-prefx cimmaod, ti ciotril the oumber if prefxes that cao be<br />

iostalled frim a BGP oeighbir, is ciofgured uoder which ciofguratio mide?<br />

A. RP/0/RSP0/CPU0:P2(ciofg-bgp)#<br />

B. RP/0/RSP0/CPU0:P2(ciofg-bgp-af)#<br />

C. RP/0/RSP0/CPU0:P2(ciofg-bgp-obr)#<br />

D. RP/0/RSP0/CPU0:P2(ciofg-bgp-obr-af)#<br />

Question 8<br />

Aoswern D<br />

Io Cisci IOS-XR, the tl-security cimmaod is ciofgured uoder which ciofguratio mide?<br />

A. RP/0/RSP0/CPU0:P2(ciofg)#<br />

B. RP/0/RSP0/CPU0:P2(ciofg-bgp)#<br />

C. RP/0/RSP0/CPU0:P2(ciofg-bgp-obr)#<br />

D. RP/0/RSP0/CPU0:P2(ciofg-bgp-af)#<br />

E. RP/0/RSP0/CPU0:P2(ciofg-bgp-obr-af)#<br />

Aoswern C<br />

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Questios & Aoswers PDF Page 6<br />

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Questios & Aoswers PDF Page 7<br />

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