CCNA Practice Exam:

OSPF

Chris Bryant, CCIE #12933

OSPF is definitely one of the biggest topics on your CCNA exam, and here's a quick practice exam to help you master this topic!

For more help on becoming a CCNA and CCNP, visit my CCNA Tutorials and 3-Minute Boot Camp pages.

I also have a new (and 100% free!) CCNA OSPF Video Boot Camp on Udemy.com that you really should attend. We'll work together on the trickiest of OSPF configs on live Cisco routers!

CCNA OSPF Video Boot Camp

Right now, let's get to the questions!

1. Which of the following OSPF network types will NOT elect a designated router by default?

A. point-to-point

B. broadcast

C. NBMA

D. All of the above

E. None of the above

 

2. Which of the following are the default hello and dead timers on an OSPF network configured on Ethernet interfaces?

A. Hello 10 secs, Dead 40 secs

B. Hello 60 secs, Dead 240 secs

C. Hello 4 minutes, Dead 16 minutes

D. This OSPF network type does not have hello or dead timers.

3. Which of the following is true of the interface whose IP address is used as the OSPF RID?

A. It doesn't have to be OSPF-enabled

B. It has to be OSPF-enabled

C. It must be configured with the router-id command

D. A loopback's IP address will be preferred over a physical interface's IP address, regardless of numeric value or whether OSPF is enabled on either

4. Short answer: The OSPF algorithm is commonly known by two different names. Give them both.

5. Which of the following is a required value in the OSPF network statement?

A. The word network

B. The word subnets

C. A wildcard mask

D. A subnet mask

E. The AS number

F. The area number

The answers are right after this brief, important message!

Get Your CCNA With My On-Demand CCNA Video Boot Camp ...

.. And I Guarantee You Can Watch The Videos Until You Pass!

(I'll even throw in my CCNA Study Guide!)

"You are the reason I'm a CCNA today!" - Paul Laudenslager

And now.. the answers!

1. (A). OSPF point-to-point networks will not elect DRs nor BDRs. While you should not allow an NBMA network to elect a DR or a BDR, that requires manual intervention from the network admin.

 

2. (A). When you configure OSPF on an Ethernet interface, that's an OSPF Broadcast network, and the hello time default there is 10 seconds - which in turn makes the dead time default 40 seconds.

 

3. (A, D) The interface whose IP address is used as the OSPF RID does not have to be OSPF-enabled, and a loopback's address will be preferred over a physical interface's address under any circumstances.

 

4. The OSPF algorithm is called the Dijkstra algorithm and the SPF algorithm.

 

5. (A, C, F). The OSPF network command will require the work network, a wildcard mask, and the OSPF area number.

Now let's head over and tackle that OSPF Video Boot Camp!

Get Your CCNA With My On-Demand CCNA Video Boot Camp ...

.. And I Guarantee You Can Watch The Videos Until You Pass!

(I'll even throw in my CCNA Study Guide!)

"You are the reason I'm a CCNA today!" - Paul Laudenslager

To Your Success,

Chris Bryant

CCIE #12933

"The Computer Certification Bulldog"

chris@thebryantadvantage.com