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- Anthony Sequeira
July 16, 2007, 2:48 pm

Note: Considering the Voice Track? Start the journey correctly with Cisco
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LAST WEEK'S ANSWER:
Answer: b
Issues:
What is the meaning of this parameter? What is the default value and what
does the default mean?
Solutions:
Specifying the infinity keyword causes the router never to move to the
shortest-path tree (SPT); it remains on the shared tree. The default for
this value is 0. 0 causes the router to join the SPT immediately upon the
first data packet it receives.
More Information:
How to Optimize PIM Sparse Mode in a Large IP Multicast Deployment
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/him
c_c/mcboptim.htm#wp1054079
LAST 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
THIS WEEK'S QUESTION:
4-13-2. Examine the router output shown in the Exhibit. Which type of
area is this router most likely residing in?
a. NSSA
b. Totally Stubby
c. Stub
d. Normal - Backbone
e. Normal - Nonbackbone
Exhibit 1
R2#show ip ospf database
OSPF Router with ID (172.16.1.2) (Process ID 1)
Router Link States (Area 20)
Link ID ADV Router Age Seq# Checksum Link
count
172.16.1.2 172.16.1.2 342 0x80000002 0x009185 2
172.16.1.6 172.16.1.6 344 0x80000001 0x00C020 2
Summary Net Link States (Area 20)
Link ID ADV Router Age Seq# Checksum
10.10.10.10 172.16.1.6 339 0x80000001 0x008A85
16.16.16.0 172.16.1.6 339 0x80000001 0x000CFC
Summary ASB Link States (Area 20)
Link ID ADV Router Age Seq# Checksum
172.16.1.1 172.16.1.6 27 0x80000001 0x00A5D3
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
100.100.100.0 172.16.1.1 32 0x80000001 0x002A8A 0
R2#
Question of the Week Compliments of:
TESTiT from NetMasterClass
http://www.netmasterclass.com/site/written.php
Copyright 2002-2007 NetMasterClass, LLC
Voice over IP - check it out at
http://www.netmasterclass.com/site/learnit_cvoice.php
LAST WEEK'S ANSWER:
Answer: b
Issues:
What is the meaning of this parameter? What is the default value and what
does the default mean?
Solutions:
Specifying the infinity keyword causes the router never to move to the
shortest-path tree (SPT); it remains on the shared tree. The default for
this value is 0. 0 causes the router to join the SPT immediately upon the
first data packet it receives.
More Information:
How to Optimize PIM Sparse Mode in a Large IP Multicast Deployment
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/him
c_c/mcboptim.htm#wp1054079
LAST 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
THIS WEEK'S QUESTION:
4-13-2. Examine the router output shown in the Exhibit. Which type of
area is this router most likely residing in?
a. NSSA
b. Totally Stubby
c. Stub
d. Normal - Backbone
e. Normal - Nonbackbone
Exhibit 1
R2#show ip ospf database
OSPF Router with ID (172.16.1.2) (Process ID 1)
Router Link States (Area 20)
Link ID ADV Router Age Seq# Checksum Link
count
172.16.1.2 172.16.1.2 342 0x80000002 0x009185 2
172.16.1.6 172.16.1.6 344 0x80000001 0x00C020 2
Summary Net Link States (Area 20)
Link ID ADV Router Age Seq# Checksum
10.10.10.10 172.16.1.6 339 0x80000001 0x008A85
16.16.16.0 172.16.1.6 339 0x80000001 0x000CFC
Summary ASB Link States (Area 20)
Link ID ADV Router Age Seq# Checksum
172.16.1.1 172.16.1.6 27 0x80000001 0x00A5D3
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
100.100.100.0 172.16.1.1 32 0x80000001 0x002A8A 0
R2#
Question of the Week Compliments of:
TESTiT from NetMasterClass
http://www.netmasterclass.com/site/written.php
Copyright 2002-2007 NetMasterClass, LLC
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