642-883 - Deploying Cisco Service Provider Network Routing (SPROUTE)
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How many questions are there on the 642-883 exam?
There are 65-75 questions on the 642-883 exam to be completed in 90 minutes .
How long is the 642-883 exam?
The 642-883 exam is 90 minutes to complete 65-75 questions.
How much does the 642-883 exam cost?
The 642-883 exam is $300. The exam provider is Pearson Vue and you can register for the exam on their website.
What is the best way to study for the 642-883 exam?
The best way to study for the 642-883 exam is to practice at Exam.com.
What are two purposes of the BGP scan-time command? (Choose two.)
to tune the BGP process which walks the BGP table and confirms the reachability of next hops
to improve BGP convergence time
When implementing OSPF, which type of networks require DR/BDR election?
mutli-access broadcast networks
What is recursive lookup in BGP and how does it work?
The router looks up the BGP route and the BGP next hop to reach a destination in the remote AS. Then the router looks up the route to reach the BGP next hop using the IGP.
Which two of the following are true regarding the BGP Prefix-Based outbound route filtering feature? (Choose two.)
IP multicast routes are not supported.
Outbound route filtering is configured only on a per-address family basis.
In Cisco IOS and Cisco IOS XE Software images, when redistributing routes from other routing protocols into OSPF, what is a common reason why some of the routes might not be redistributed into OSPF?
The subnets option in the redistribute command is missing.
Which reserved AS number or range of numbers is used for backward compatibility between old BGP peers using 16-bit AS number and new BGP peers using 32-bit AS number?
You are implementing OSPF as the IGP using a single OSPF area design. The router memory usage for OSPF is too high. Which two methods can lower the OSPF memory usage? (Choose two.)
implement multi-area OSPF
implement route summarization on the ABRs
When troubleshooting OSPF neighbor errors, which three verification steps should be considered? (Choose three.)
Verify if neighboring OSPF interfaces are configured in the same area.
Verify if neighboring OSPF interfaces are configured with the same hello and dead intervals.
Verify if neighboring OSPF interfaces are configured with the same area type.
When using the show bgp ipv6 unicast summary command to verify the IPv6 BGP session status with the IPv6 BGP peers, you noticed the "St/PfxRcd" status for one of the IPv6 BGP peers is in the "Active" state. What does the "Active" state indicate?
The router is in the process of establishing the IPv6 BGP session with the IPv6 BGP peer.
What are two characteristics of the multihomed customers to service providers connection option? (Choose two.)
The traffic load can be shared for different destination networks between service providers.
The routing methodology must be capable of reacting to dynamic changes. BGP is used to achieve this flexibility.
Which of the following is a characteristic of dual-multihomed connectivity between an enterprise network and the service provider network or networks?
An enterprise network that is connected to two or more different service providers with two or more links per service provider and using BGP to exchange routing updates with the service providers.
When redistributing EIGRP routes into OSPF as type E2 external OSPF routes, what is the default OSPF seed metric?
Routes that are received from an IBGP peer will be propagated to which other routers by default?
to the EBGP peers only
Which OSPF feature allows a router with redundant route processors to maintain its OSPF state and adjacencies across planned and unplanned RP switchovers and does this by checkpointing state information from OSPF on the active RP to the standby RP? This feature does not require the OSPF neighbor to support graceful restart.
What are two consequences of having constant link flaps, resulting in the OSPF neighbor adjacencies going up and down repeatedly? (Choose two.)
constant flooding of LSAs
many SPF recalculations
Which BGP attribute is a set of generic tags that can be used to signal various routing policies between BGP routers?
Which of the following is used by an IS-IS router to detect other IS-IS neighbor routers and to form adjacencies?
What is defined by using the Cisco IOS XR policy-global configuration command?
global variables that can be referenced by any route policy
Which three statements are true regarding the OSPF router ID? (Choose three.)
The OSPF routing process chooses a router ID for itself when it starts up.
The router-id command is the preferred procedure to set the router ID.
After the router ID is set, it does not change, even if the interface that the router is using for the router ID goes down. The router ID changes only if the router reloads or if the OSPF routing process restarts.
How can you prevent multihomed customers with connections to two service providers from acting as a transit AS?
Use an AS-path access-list to filter the BGP updates to the ISPs
In which network environment is IS-IS adjacency check important?
in an IPv4/IPv6 environment and running single-topology IS-IS
Which high-availability mechanism is a detection protocol that is enabled at the interface and at the routing protocol levels?
When configuring Cisco IOS XR route policy nesting, which command is used within a route policy to call another route policy?
What are two ways to advertise networks into BGP? (Choose two.)
using route redistribution into BGP
using the network router BGP command
Which two statements are true about an EBGP session or an IBGP session? (Choose two.)
EBGP routes have a default Admin Distance of 20 and IBGP routes have a default Admin Distance of 200.
IBGP uses split horizon to prevent routing information loops; routes learned from an IBGP peer are not advertised to another IBGP peer.
When using the Cisco IOS-XR show bgp command to examine the BGP table, the Metric value being displayed is used to represent which BGP attribute?
When implementing LDP, what is liberal label retention mode?
The LSR will store the label received from the downstream LSRs in its LIB even if the downstream LSRs are not the next hop for the destination
Which high-availability routing feature requires the neighbor router to support the graceful restart capability?
When redistributing routes into OSPF, which kind of routes will be redistributed by default on Cisco IOS XR Software but will not be automatically redistributed by default on Cisco IOS Software and Cisco IOS XE Software?
In comparing IS-IS with OSPF, a Level-1-2 IS-IS router is similar to which kind of OSPF router?
ABR on totally stubby OSPF area
Which two statements about a transit AS are correct? (Choose two.)
Routes between ASs are always exchanged via eBGP.
iBGP sessions can be established between non directly connected routers.