JUNOS Enterprise Routing

Chapter Review Answers

1. Answer: D. FRF.16 allows bonding of physical interfaces together, whereas FRF.15 bonds multiple DLCIs together.

2. Answer: B. The only way to service multicast traffic is to use a next hop service set. Interface-style service sets ignore multicast traffic.

3. Answer: False. Some PICs will use an lsq interface, and others will use an ls interface. lsq allows for more CoS features than ls.

4. Answer: A. In JUNOS software, a session is referred to as a conversation, which is a flow in each direction.

5. Answer: C. To achieve data confidentiality, you should encrypt the traffic. One algorithm you can use to encrypt traffic is AES.

6. Answer: C. When MLPPP is enabled, packets will be sent down each link on a per-fragment basis. Since each packet fragment will have an MLPPP header with a sequence number, order will be maintained by the end device.

7. Answer: B. If fragmentation does not occur on an MLPPP link, the packets are balanced over a flow (source IP, destination IP, protocol, etc.). Since nonfragmented packets will not contain an MLPPP header, per flow is the only way to maintain packet order.

8. Answer: D. Compressed RTP decreases the header size to a few bytes, which reduces serialization and queuing delay.

9. Answer: B. Traffic arriving on the outside service interface will be in the output direction. Traffic arriving on the inside service interface will be in the input direction.

10. Answer: C. You can apply a service filter to an interface with an action of skip to allow traffic to pass ...