July 2009
Intermediate to advanced
752 pages
23h 19m
English
Content preview from JUNOS Enterprise SwitchingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter Review Answers
Answer: C. The most common and port-cost-efficient model is to plug the IP phone and PC into the same switch port. This is accomplished by using the data port on the IP phone and then plugging the IP phone into the switch port.
Answer: B. The class of device can determine the amount of power that can be assigned to a port.
Answer: C. Ah, a trick question. The number of PoE ports that can be supported depends on the card and power supply type.
Answer A. LLDP is a Layer 2, Data Link layer protocol.
Answer: A, C. These are two of the many TLVs that may be sent in an LLDP message.
Answer: C. LLDP-MED is an endpoint discovery protocol, which is used to learn the capabilities of an endpoint. This information could then be used to configure the device.
Answer: D. The voice VLAN feature allows for tagged and untagged frames to be received on the same port. This is usually reserved for use by an IP phone that is tagging packets and a PC that is sending untagged frames.
Answer: B. EX Series switches do not automatically advertise LLDP-MED information until they receive LLDP-MED information from an LLDP neighbor.
Answer: B. The voice VLAN is configured under
[edit ethernet-switching-options]and not at the VLAN or interface level, like other VLAN configurations.Answer: A, D. BA classifiers can classify packets based on 802.1p, DSCP, or IP precedence bits. A multifield classifier uses any field available in a firewall filter.
Answer: C. One option is to configure the switch as ...
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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.