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CCIE Certification Question of the Week - JULY0607 posted 07/06/2007
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LAST WEEK'S ANSWER:

Answer: e



Topic Domain:8d



Issues:

Which of these most directly addresses the concern? What is uRPF?



Solutions:

uRPF most directly addresses the concern. The Unicast RPF feature helps
to eliminate malformed or forged (spoofed) IP source addresses into a
network. The feature does this by discarding IP packets that lack a
verifiable IP source address.



More Information:

Configuring Unicast Reverse Path Forwarding

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hs
ec_c/part25/ch08/schrpf.htm



LAST WEEK'S QUESTION:

8-12-1. Your boss is concerned with the possibility of malformed or
forged IP source addresses passing through a key border router in your
network infrastructure. Which feature should you recommend to most
directly address his concern?



a.	IOS Firewall
b.	IP Session Filtering
c.	TCP Intercept
d.	802.1x Authentication Services
e.	uRPF



THIS WEEK'S QUESTION:

7.12.1 You notice the command ip pim spt-threshold infinity used in the
multicast configuration on a router in your infrastructure. What does
the infinity keyword do?



a.	It allows unlimited multicast streams to use the shortest-path
tree
b.	It causes the router never to move to the shortest-path tree
c.	It causes the router to join the shortest-path tree immediately
upon the first data packet it receives
d.	None of these options are correct



Question of the Week Compliments of:



TESTiT from NetMasterClass



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