CCIE CCIE Enterprise Infrastructure 2

Question 1

What is the purpose of the LISP protocol in Cisco SD-Access?

Accepted Answer

Providing mapping between endpoint identifiers and routing locators

Answer

LISP (Locator/ID Separation Protocol) in SD-Access maps endpoint identifiers (EIDs) to routing locators (RLOCs) for fabric-based forwarding.

Question 2

In Cisco SD-Access, which node type acts as the first point of attachment for end devices and enforces policy?

Accepted Answer

Edge node

Answer

Edge nodes in SD-Access are the first point of attachment for end devices, performing policy enforcement and LISP registration.

Question 3

Which BGP attribute is used to influence inbound traffic by advertising a less specific prefix from a multi-homed AS?

Accepted Answer

AS-path prepending

Answer

AS-path prepending artificially lengthens the AS path on specific advertisements to make that path less preferred for inbound traffic.

Question 4

What is the default administrative distance for OSPF in Cisco IOS?

Accepted Answer

110

Answer

OSPF has a default administrative distance of 110 in Cisco IOS, making it less preferred than EIGRP (90) but more preferred than RIP (120).

Question 5

In OSPF, which LSA type is generated by ABRs to summarize routes between areas?

Accepted Answer

Type 3

Answer

Type 3 LSAs (Summary LSAs) are generated by ABRs to advertise networks from one area into another area.

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