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: B. Routing is not transparent. End stations participate in the decision to use a router when they decide a destination is not local. Routing is based on hierarchical addressing.
Answer: D. Routing is needed to interconnect stations in different VLANs. Routing is an indirect delivery model. Layer 2 filters can be used to restrict communications with this same VLAN; Layer 3 filters are normally used to filter inter-VLAN traffic.
Answer: False. When attempting to reach a station on a different link, the ARP is sent to the next hop, which is a router for indirect delivery. Within the same VLAN, the ARP is sent to the target address itself.
Answer: B. The RVI is used for internal routing among VLANs. The SVI is in IOS, and while two interfaces with an external cable could work, they are not required.
Answer: B. All units on a VLAN interface are seen as directly connected routes. Layer 3 filters are needed to prevent routing among these direct networks.
Answer: A. In JUNOS, discard is a silent discard, while reject generates an error message. Both are valid next hops for a static route.
Answer: B. RIP in JUNOS accepts the
exportkeyword only at the group level. Import policy can be applied at all three levels.Answer: C. By default, RIP advertises/readvertises nothing, not even active RIP routes. Odd, isn’t it?
Answer: B. The
show route advertising-protocolform displays routes sent out of a RIP interface. Theshow route protocol ripcommand does display RIP routes, ...
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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.
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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.