OSPF Review (The Second Best Igp)

11 Questions | By Rayaragon | Last updated: Mar 21, 2022 | Total Attempts: 189

Questions

Settings

Create your own Quiz

In information technology, the connection of one computer to another is what matters. Specialists refer to this as networking. The quiz below is on open shortest path first (OSPF) and it will help you better understand what you already know.

Questions and Answers

1.

Which attribute does not apply to OSPF?
- A.
  
  VLSM is supported
- B.
  
  Route Summarization is supported
- C.
  
  Split Horizon is supported
- D.
  
  Link State within and Area is supported
- E.
  
  All of the Above
2.

Why Doesn't OSPF use Split Horizon or poison reverse?
- A.
  
  Because poisoning is cruel.
- B.
  
  OSPF uses a form of Split Horizon and Poison Reverse, called akuna matata.
- C.
  
  OSPF was designed to provide a loop free topology and the requirement of Area 0 is one of these methods.
- D.
  
  All of the Above
3.

Within a Non-Area 0 Area, how is a loop free topology ensured?
- A.
  
  Hot sausages
- B.
  
  All routers share the same database of all links in the area and compute the Djisktra algorithm to on that same data set, this ensures a loop free environment. The "Link State Data Base" and mechanisms to ensure the LSDB is synchronized is very important in OSPF: mechanisms to update missing LSAs and to ensure synchronization are built into OSPF messages.
- C.
  
  OSPF relies on EIGRP for its control plane
- D.
  
  All of the Above
4.

When do you use OSPFv2 versus OSPFv3?
- A.
  
  OSPFv2 is for IPv4 and OSPFv3 is for IPv6.
- B.
  
  OSPFv3 is only available in ISR-G2 bundles with Advanced IP Services.
- C.
  
  What happened to OSPFv1?
- D.
  
  All of the Above
5.

Below are the MCAST Addresses for OSPFv3: 224.0.0.5 is used when sending to ALL OSPF ROUTERs 224.0.0.6 is used when Routers send updates to the DR and BDR
- A.
  
  True
- B.
  
  False
6.

OSPF use Protocol 89 for transport and EIGRP uses Protocol 88 for Transport
- A.
  
  True
- B.
  
  False
7.

ASBR sends Type 3 LSAs into Area 0.
- A.
  
  True
- B.
  
  False
8.

What is the acronym "ABR" short for?
- A.
  
  All Boys Ride
- B.
  
  A Big Router
- C.
  
  Area Boundary Router
- D.
  
  Area Border Router
- E.
  
  All of the Above
9.

Intra-Area Routes are preferred of Inter-Area routes?
- A.
  
  Not sure
- B.
  
  When is this over?
- C.
  
  True
- D.
  
  False
10.

E1 routes include the cost to the ASBR in the OSPF Cost.
- A.
  
  E1 is an external route that ASBRs redistribute into OSPF.
- B.
  
  Historically, E2 was when the cost to get to the ASBR was insignificant versus the low bandwidth of the External link.
- C.
  
  Yes
- D.
  
  E2 was also a computationally easier way to handle external routes, since the cost was the same from all OSPF routers and no calculations had to be made.
11.

The Link State DataBase is synchronized in OSPF -- across all routers.
- A.
  
  True
- B.
  
  False