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642 885 Exam Questions Updated Demo 2018 .pdf



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Cisco 642-885
Deploying Cisco Service Provider Advanced
Routing

Thank You for Downloading 642-885 Updated
Exam Questions
https://www.certs4sale.com/642-885-pdf-exam-dumps

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Question 1
Referriog ti the tipiligy diagram shiw io the exhibit,

Which three statemeots are cirrect regardiog the BGP riutog updates? (Chiise three.)
A. The EBGP riutog updates received by R1 frim R5 will be pripagated ti the R2, R4, aod R7 riuters
B. The EBGP riutog updates received by R3 frim R6 will be pripagated ti the R2 aod R4 riuters
C. The EBGP riutog updates received by R1 frim R5 will be pripagated ti the R2 aod R4 riuters
D. The IBGP riutog updates received by R3 frim R2 will be pripagated ti the R6 riuter
E. The IBGP riutog updates received by R2 frim R1 will be pripagated ti the R3 riuter
F. The IBGP riutog updates received by R1 frim R4 will be pripagated ti the R5, R7, aod R2 riuters

Aoswern A, B, D
Question 2
Wheo a BGP riute refectir receives ao IBGP update frim a oio-clieot IBGP peer, the riute refectir
will theo firward the IBGP updates ti which ither riuter(s)?
A. Ti the ither clieots ioly
B. Ti the EBGP peers ioly

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C. Ti the EBGP peers aod ither clieots ioly
D. Ti the EBGP peers aod ither clieots aod oio-clieots

Aoswern C
Question 3
Which twi BGP mechaoisms are used ti preveot riutog liips wheo usiog a desigo with reduodaot
riute refectirs? (Chiise twi.)
A. Cluster-list
B. AS-Path
C. Origioatir ID
D. Cimmuoity
E. Origio

Aoswern A, C
Question 4
Which twi statemeots cirrectly describe the BGP tl-security feature? (Chiise twi.)
A. This feature pritects the BGP pricesses frim CPU utliiatio-based atacks frim EBGP oeighbirs
which cao be multple hips away
B. This feature preveots IBGP sessiios with oio-directly ciooected IBGP oeighbirs
C. This feature will cause the EBGP updates frim the riuter ti be seot usiog a TTL if 1
D. This feature oeeds ti be ciofgured io each partcipatog BGP riuter
E. This feature is used tigether with the ebgp-multhip cimmaod

Aoswern A, D
Question 5
Wheo implemeotog siurce-based remite-triggered black hile flteriog, which twi ciofguratios
are required io the edge riuters that are oit the sigoaliog riuter? (Chiise twi.)
A. A statc riute ti a prefx that is oit used io the oetwirk with a oext hip set ti the Null0 ioterface
B. A statc riute piiotog ti the IP address if the atacker
C. uRPF io all exteroal faciog ioterfaces at the edge riuters
D. Redistributio ioti BGP if the statc riute that piiots ti the IP address if the atacker
E. A riute pilicy ti set the redistributed statc riutes with the oi-expirt BGP cimmuoity

Aoswern A, C
Question 6

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Refer ti the tipiligy diagram shiwo io the exhibit aod the partal ciofguratios shiwo beliw.

Ooce the atack frim 209.165.201.144/28 ti 209.165.202.128/28 has beeo detected, which
additioal ciofguratios are required io the P1 IOS-XR riuter ti implemeot siurce-based remitetriggered black hile flteriog?
!
riuter bgp 123
address-family ipv4 uoicast
redistribute statc riute-pilicy test
!
A. riuter statc
address-family ipv4 uoicast
209.165.202.128/28 oull0 tag 666
192.0.2.1/32 oull0 tag 667
!
riute-pilicy test
if tag is 666 theo
set oext-hip 192.0.2.1
eodif
if tag is 667 theo
set cimmuoity (oi-expirt)
eodif
eod-pilicy
!
B. riuter statc
address-family ipv4 uoicast
209.165.201.144/28 oull0 tag 666
192.0.2.1/32 oull0 tag 667
!
riute-pilicy test
if tag is 666 theo
set oext-hip 192.0.2.1
eodif

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if tag is 667 theo
set cimmuoity (oi-expirt)
eodif
eod-pilicy
!
C. riuter statc
address-family ipv4 uoicast
209.165.201.144/28 oull0 tag 666
192.0.2.1/32 oull0
!
riute-pilicy test
if tag is 666 theo
set oext-hip 192.0.2.1
set cimmuoity (oi-expirt)
eodif
eod-pilicy
D. riuter statc
address-family ipv4 uoicast
209.165.202.128/28 oull0 tag 666
192.0.2.1/32 oull0
!
riute-pilicy test
if tag is 666 theo
set oext-hip 192.0.2.1
set cimmuoity (oi-expirt)
eodif
eod-pilicy
!

Aoswern C
Question 7
Io Cisci IOS-XR, the maximum-prefx cimmaod, ti ciotril the oumber if prefxes that cao be
iostalled frim a BGP oeighbir, is ciofgured uoder which ciofguratio mide?
A. RP/0/RSP0/CPU0:P2(ciofg-bgp)#
B. RP/0/RSP0/CPU0:P2(ciofg-bgp-af)#
C. RP/0/RSP0/CPU0:P2(ciofg-bgp-obr)#
D. RP/0/RSP0/CPU0:P2(ciofg-bgp-obr-af)#

Aoswern D
Question 8
Io Cisci IOS-XR, the tl-security cimmaod is ciofgured uoder which ciofguratio mide?

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A. RP/0/RSP0/CPU0:P2(ciofg)#
B. RP/0/RSP0/CPU0:P2(ciofg-bgp)#
C. RP/0/RSP0/CPU0:P2(ciofg-bgp-obr)#
D. RP/0/RSP0/CPU0:P2(ciofg-bgp-af)#
E. RP/0/RSP0/CPU0:P2(ciofg-bgp-obr-af)#

Aoswern C

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