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| Section | Objectives |
|---|---|
| MPLS and VPN Architectures | - VPN design
|
| End-to-End Enterprise Architecture Scenarios | - Service integration
|
| Network Design Methodology and Principles | - Design lifecycle and methodology
|
| Infrastructure Design (Layer 2 / Layer 3) | - Layer 3 design
|
| Multicast and Advanced Services | - Multicast design
|
| Routing and Path Control | - Routing protocol design
|
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NEW QUESTION # 534
(Choose two)
Answer: C,E
Explanation:
# Explanation:
A: Restricting SNMP OID polling to only necessary objects prevents large MIB walks and reduces processing load.
D: Associating SNMP communities with ACLs allows access control and limits polling scope to trusted hosts.
Other options:
B: Disabling OIDs on the NMS reduces resource usage there, but doesn't protect network devices.
C: Increasing SNMP priority could negatively impact other processes and is not a best practice.
E: Unloading MIBs on devices is typically not possible or effective.
#
NEW QUESTION # 535 
Refer to the exhibit: A customer is migrating from a TDM-based Layer 2 VPN (L2VPN) to an MPLS Layer 3 VPN (L3VPN) in phases. The backbone OSPF connection between HUB A and HUB B will be replaced by eBGP. During the migration, some spokes (A2 and B1) are already moved to the L3VPN. The goal is to avoid routing loops during this hybrid transition.
Which design choice helps prevent routing loops during the backbone link migration?
Answer: B
Explanation:
# Comprehensive Explanation:
* A: In hybrid WAN designs where routing domains are gradually migrating from OSPF to BGP, particularly with overlapping domains or redistribution points, loops can occur if the same routes are seen via multiple protocols (e.g., BGP and OSPF). Implementing route filtering on the OSPF backbone prevents it from learning and advertising spoke routes that it also receives via BGP-eliminating the loop scenario.
* B: Advertising a low administrative distance (AD) for transit traffic does not prevent loops and may worsen convergence or cause routing inconsistency.
* C: Summarizing OSPF routes may reduce the routing table size, but it does not solve the loop issue caused by dual protocol redistribution unless filtering is applied.
* D: Redistributing EIGRP routes into BGP with a low cost might cause preference toward one path but does not address the loop risk between the hybrid segments (OSPF and BGP).
This is a classic use case for route filtering in dual-protocol or dual-backbone migrations, where ensuring consistent path selection and loop prevention is essential.
NEW QUESTION # 536
Retef to the exhibit.
An engineer is designing a multiarea OSPF network for a client who also has a large EIGRP domain EIGRP routes are getting redistributed into OSPF ,OSPF area 20 has routers with limited memory and CPU resources The engineer wants to block routes from EIGRP 111 from propagating into area 20 and allow EIGRP 222 routes to How in Which OSPF area type fulfills this design requirement?
Answer: A
NEW QUESTION # 537
Scrum is a subset of Agile and is a lightweight process framework for Agile development Which role becomes the interface between the business the customers and their product-related needs on one side and the Team on the other?
Answer: B
Explanation:
# Explanation:
* A: The Product Owner is responsible for defining user stories, maintaining the product backlog, and representing the customer's voice to the development team.
* B: Product Manager may define broader strategy but doesn't manage the backlog directly.
* C: Scrum Master ensures the process is followed but doesn't interface with the business side.
* D: Program Manager oversees multiple projects; not Scrum-specific.
NEW QUESTION # 538
How can EIGRP topologies be designed to converge as fast as possible in the event of a point-to-point link failure?
Answer: A
Explanation:
EIGRP's convergence time is heavily impacted by the size of the query domain - the group of routers involved when a route goes into active state. The larger the query domain, the longer the convergence.
Summarization naturally bounds query propagation because routers receiving a summary have no knowledge of individual prefixes beyond that summary, preventing them from being queried about specifics they don't track.
This design technique is emphasized in CCDE v3.1 because:
* Summarization reduces the query scope.
* Faster convergence happens as fewer routers process queries.
* Hierarchical design is enabled for stability and scalability.
Why other options are incorrect:
* A: Distribute lists filter prefixes but don't reduce query propagation.
* B & C: Triangulated or squared physical topology doesn't control protocol-level query scope.
* E: Default routes may help limited routing domains but don't optimize EIGRP convergence specifically.
-
NEW QUESTION # 539
......
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