Friday, August 22, 2008

It's Friday, August 22, and here are the answers to yesterday's blog questions!

Lots of great features are being added to the blog and the website over the next few days and weeks, including...

... a new CCNA, CCNP, CCENT, or CCNA Security exam every day for the rest of August on the main website

... CCNA Wireless and Voice questions added to the blog's daily questions, beginning next Monday

... new Cisco training videos on the main website, starting with how and why to add a frame relay switch to your home lab

... and more!

Be sure to read today's other blog posts for links to new practice exams and over 250 tutorials on the main site!

With no further ado, here are the answers to yesterday's questions!

CCNA Certification And CCENT Certification:

A Cisco switch can take one of three actions with an incoming frame. Name all three and describe under what conditions each action would occur.

Answer: If the switch's MAC table has no entry for the destination MAC address of the frame, the frame will be flooded - that is, a copy of the frame is sent out every single port except the one it came in on.

If the switch's MAC table does have an entry for the destination MAC address, and the source and destination are shown to be off different ports on the switch, the frame is unicast - sent out only the port leading to the destination address.

If the switch's MAC table has an entry for the destination MAC, and the source and destination are shown to be off the same port, the frame is filtered by the switch - it's not forwarded in any way.

CCNA Security Certification / CCNP ISCW Exam:

What is SDEE, and what do we use it for?

Answer: SDEE (Security Device Event Exchange) is an application-layer protocol that allows the exchange of messages between an IPS server and client. SDEE pulls logs from our routers, and these logs can be viewed in SDM.

CCNP Certification / BSCI Exam:

OSPF Total Stub areas can contain which of the following OSPF route types?

A. O


C. O* IA

D. O N1

E. O N2

Here's a quick review of the OSPF route types the different stub area types can contain:

Stub areas can contain O, O IA, and O* IA routes.

Total stub areas can contain O and O* IA routes only.

NSSAs can contain O, O IA, O N2, O* N2, O N1, and O* N1 routes.

CCNP Certification / BCMSN Exam:

What command will allow a Cisco switch to accept only secure remote connections? Where should this command be placed?

Answer: Just put the transport input ssh command on the VTY lines.

CCNP / ONT Exam: (My ONT Study Package is now available!)

What's the difference between the two options shown below by IOS Help? What is the purpose of each?

R1(config)#int s0/0
R1(config-if)#auto ?
discovery Configure Auto Discovery
qos Configure AutoQoS

Answer: Enabling Auto Discovery will begin the process of discovering the traffic types and flows on that interface; the auto qos command begins the process of generating and applying the MQC-based policy.

Check today's other blog posts for more practice questions and free tutorials!

To your success,

Chris Bryant
CCIE #12933

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