Thursday, June 12, 2008

Welcome back! It's Thursday, June 12, and here are the answers to yesterday's Network+, CCNA, CCENT, and CCNP practice questions!

Cisco CCENT And Network+ Certification:

What do the terms "physical address", "MAC address", and "hardware address" have in common?

Answer: They all describe the same thing, a Data Link layer address. The terms "physical address" and "hardware address" refer to the physical impression of the MAC address that exists on the hardware (the Network Interface Card).

CCNA Certification:

Short answer: What's the binary equivalent of the hex value c9?

Answer: We've got 12 ("c") units of 16 and 9 units of 1: 192 + 9 = 201. The binary equivalent of 201 is 11001001.

CCNP Certification / BSCI Exam:

Of the following, traffic for which ports is translated from a broadcast to a unicast when the ip helper-address command has been configured?







Answers: A, B, F. These are the ports that are translated from broadcast to unicast with the ip helper-address command:

TIME, port 37; TACACS, port 49; DNS, port 53; BOOTP/DHCP Server, port 67; BOOTP/DHCP Client, port 68; TFTP, port 69; NetBIOS name service, port 137;NetBIOS datagram service, port 138.

CCNP Certification / BCMSN Exam:

The full command to disable a switch port's ability to transmit DTP frames is ____________.

Answer: switchport nonegotiate.

CCNP Certification / ISCW Exam:

Briefly describe a "DDoS" attack.

Answer: A Distributed Denial-Of-Service attack is a typical DoS attack, but one that is carried out by a large number of attackers rather than a single host.

CCNP Certification / ONT Exam:

A router is configured for DiffServ. Which of the following values can the router consider when performing QoS?

A. IP Prec

B. CoS marking

C. incoming interface


Answer: A, C, D. Routers will not use CoS values.

New questions posted later today, and be sure to read today's other blog posts for links to new CCNA question sets over on the main site!

To your success,

Chris Bryant
CCIE #12933

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