July 2009
Intermediate to advanced
752 pages
23h 19m
English
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Chapter Review Answers
Answer: B. STP’s primary goal is to create a loop-free topology. Answer D is close, as it is an optimized topology, but that is not the primary goal of STP.
Answer: A. The designated bridge is the device chosen to forward local traffic on a given link. This ensures that on a segment, a bridge does not receive a multicast or broadcast packet and reinject it into the LAN.
Answer: D. The root bridge is the bridge with the lowest bridge ID. Remember that the bridge ID consists of the MAC address and the priority field, which is user-configurable.
Answer: A, C. Blocking and listening are the only valid STP states in the list.
Answer: C. The only other valid command is answer B, but that command lists only local bridge parameters.
Answer: B. The failover times in STP could range as high as 30 seconds using default timers. The convergence time of STP is a known issue that has been corrected in RSTP.
Answer: A, D. The new ports in RSTP are the backup ports and the alternate ports. Both provide rapid switchover in case of a root or designated port failure.
Answer: B, C. RSTP actually decreases the number of port states an interface can be in. This allows for much quicker transition times. The port cost values were also adjusted in order to include modern high-speed ports.
Answer: C. This command will place the port in the blocking state if a superior BPDU is received.
Answer: C. Sixty-four regions are allowed in MSTP, with each region allowing multiple VLANs.
Answer: C. One ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.