Monday, June 23, 2008

It's Monday, June 23, and here are the answers to yesterday's Cisco certification exam practice questions.

Be sure to read yesterday and today's blog postings regarding important opportunities for CCNAs - and why it's never been more important to earn your CCNA certification!

CCENT Certification:

A host has sent an ARP Request. Four ports are on the switch. How many ports will forward that ARP Request?

Answer: The ARP Request is an L2 broadcast, so it will be forwarded out every port on the switch except the one the broadcast was originally received upon - that makes three ports.

The destination of an L2 broadcast is ff-ff-ff-ff-ff-ff.


A BGP route displays a code of "?". What does this most likely mean?

A. The route was learned from an iBGP peer.

B. The route was learned by BGP via redistribution.

C. The route is corrupt.

D. The route is being computed by BGP's routing algorithm and will be available in a few seconds, unless it becomes stuck-in-active.

Answer: B. An origin code of "?" means "incomplete":

R3#show ip bgp
BGP table version is 20, local router ID is
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete

An origin code of incomplete indicates a route originally learned by BGP via redistribution.


What QoS scheme is defined in RFC 1613?

A. DiffServ


C. best-effort

D. Integrated Services

Answer: D. Integrated Services is defined by RFC 1613.


What command resulted in the following output?

Configured SDF Locations:
Builtin signatures are enabled but not loaded
Last successful SDF load time: 14:17:00 UTC May 16 2008
IPS fail closed is disabled
Fastpath ips is enabled
Quick run mode is enabled
Event notification through syslog is enabled
Event notification through SDEE is enabled
Total Active Signatures: 500
Total Inactive Signatures: 0
Signature 50000:0 disable

Signature 50000:1 disable
Signature 50000:2 disable
IPS Rule Configuration
IPS name sdm_ips_rule
Interface Configuration
Interface FastEthernet0/1
Inbound IPS rule is not set
Outgoing IPS rule is sdm_ips_rule
Interface FastEthernet0/0
Inbound IPS rule is sdm_ips_rule
Outgoing IPS rule is not set

Answer: That's the output of show ip ips config. That's an excellent command to begin your IPS troubleshooting and/or verification, since it shows you...

the SDF location
whether the built-in sigs are enabled and in use
the last time the SDF was loaded
whether Fail Closed and SDEE are enabled
the number of active and inactive signatures
the IPS rules
the interfaces the IPS rules have been applied to

... and more!

CCNP / ONT Exam:

In an analog-to-digital conversion, the following four actions are taken. What is their proper order?

A. Quantize the sample

B. Sample the analog signal

C. Compress the sample (optional step)

D. Encode the signal

Answer: B, A, D, C.

New questions posted later today! Be sure to read today and yesterday's blog postings regarding new certification opportunities for CCNAs!

To your success,

Chris Bryant
CCIE #12933

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