EIGRP and OSPF - EIGRP and OSPF (3)

17.

Which of the following describe the process identifier that is used to run OSPF on a router?

It is locally significant.
It is globally significant.
It is needed to identify a unique instance of an OSPF database.
It is an optional parameter required only if multiple OSPF processes are running on the router.

A.	1, 2 and 4
B.	1 and 3
C.	3 and 5
D.	All of the above

Answer: Option B

Explanation:

The Process ID for OSPF on a router is only locally significant and you can use the same number on each router, or each router can have a different number-it just doesn't matter. The numbers you can use are from 1 to 65,535. Don't get this confused with area numbers, which can be from 0 to 4.2 billion.

18.

With which network type will OSPF establish router adjacencies but not perform the DR/BDR election process?

A.	Point-to-point
B.	Backbone area 0
C.	Broadcast multi-access
D.	Non-broadcast multi-access

Answer: Option A

Explanation:

No DR is assigned on any type of point-to-point link. No DR/BDR is assigned on the NBMA point-to-multipoint due to the hub/spoke topology. DR and BDR are elected on broadcast and non-broadcast multi-access networks. Frame Relay is a non-broadcast multi-access (NBMA) network by default.

EIGRP and OSPF - EIGRP and OSPF (3)

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