Cisco Deploying Cisco Service Provider Network Routing (SPROUTE) - 642-883 Exam Practice Test
BGP peerings can be secured using which protection mechanism?
Correct Answer: D
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Refer to the exhibit.
In AS 200, routers B and C are the exit points towards AS 100 and AS 300, respectively.
Router B is running Cisco IOS XR and Router C is running Cisco IOS XE. OSPF is used as
PE-CE routing protocol. In order to ensure proper reachability between AS 100 and AS
300, which two sets of configuration should an engineer apply? (Choose two.)
In AS 200, routers B and C are the exit points towards AS 100 and AS 300, respectively.
Router B is running Cisco IOS XR and Router C is running Cisco IOS XE. OSPF is used as
PE-CE routing protocol. In order to ensure proper reachability between AS 100 and AS
300, which two sets of configuration should an engineer apply? (Choose two.)
Correct Answer: D,F
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Which statement is correct regarding the DR election process In this OSPF implementation?
Correct Answer: C
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Refer to the exhibit.
R2 does not have R1 1.1.1.1/32 subnet in its BGP table. Which issue can be causing this problem?
R2 does not have R1 1.1.1.1/32 subnet in its BGP table. Which issue can be causing this problem?
Correct Answer: D
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Refer to the IS-IS configuration exhibit.
This is the typical IS-IS configuration of the routers in an AS using IS-IS as the IGP. This
AS is in the transition phase of integrating IPv6 into the network. During this transition phase, some of the routers within the AS might be running IPv4 only, some might be running IPv6 only, and others might be running both IPv4 and IPv6. To avoid any black holes for the IPv6 traffic, which configuration change can be made?
This is the typical IS-IS configuration of the routers in an AS using IS-IS as the IGP. This
AS is in the transition phase of integrating IPv6 into the network. During this transition phase, some of the routers within the AS might be running IPv4 only, some might be running IPv6 only, and others might be running both IPv4 and IPv6. To avoid any black holes for the IPv6 traffic, which configuration change can be made?
Correct Answer: E
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DRAG DROP
Drag and drop the terms on the left onto the appropriate definition on the right.
Drag and drop the terms on the left onto the appropriate definition on the right.
Correct Answer:
Explanation:
Is a network that solely purchases transit from other networks to reach the Internet - Tier 3
ISP
Peers with some networks, but purchases IP transit or pays settlements to reach some portion of the Internet- Tier 2 ISP
Peers with other ISPs of the same Tier level to form the backbone of the Internet - Tier 1
ISP
Provides or sells access and bandwidth into its backbone infrastructure and network access points - NSP
Interconnects network service providers - NAP
Which AS path access list is used by a multihomed customer to only announce their own address space to their service providers to prevent the multihomed customer from becoming a transit AS?
Correct Answer: E
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In Cisco IOS XE, which option is the default threshold value for slow peer detection?
Correct Answer: B
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Refer to the exhibit.
Assume that XR2 and R3 have been configured correctly for OSPF area 0. Which command is needed to configure XR2 as an ABR between area 0 and area 1?
Assume that XR2 and R3 have been configured correctly for OSPF area 0. Which command is needed to configure XR2 as an ABR between area 0 and area 1?
Correct Answer: B
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A network engineer must secure every BGP session within the autonomous system by enabling MD5 authentication. Which command implements authentication on network devices that run regular Cisco IOS?
Correct Answer: B
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