From: Victor Cappuccio (vcappuccio@desca.com)
Date: Fri Nov 03 2006 - 12:22:17 ART
Hi Antony,
that Answer should be Option (c) 25% per every BECN received until it
get to the mincir!!
CB Shaping can adapt its shaping rate based on the receipt of BECNs or
Foresight messages. When the shaper receives a BECN or Foresight
message, it slows down by 25 percent of the maximum rate, repeating the
process for each received BECN or Foresight message, until the minimum
rate is reached. The rate grows again after 16 consecutive intervals
occur without a BECN or Foresight congestion message. The shaping rate
grows by 1/16 of the maximum rate during each Tc, until the maximum rate
is reached again. This process results in an increase in the shaping
rate based on the following formula: (Bc + Be)/16
Please tell me what is this about? Some test engine corrections??
Thanks
Victor.-
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
anthony.sequeira@thomson.com
Sent: Viernes, 03 de Noviembre de 2006 10:06 a.m.
To: ccielab@groupstudy.com
Subject: CCIE Recertification Question of the Week - NOV0306
Congrats to Nick Davey [nicky.davey@gmail.com] for winning the Cisco
Press title last week!
We will randomly draw again this week from the responses sent to
anthony.sequeira@thomson.com. The winner will receive the CCIE Routing
and Switching Flash Cards and Exam Practice Pack from Cisco Press.
SPECIAL NOTE:
Review the answer here carefully - for the first time last week - a
majority of the respondents where incorrect!
LAST WEEK'S RESPONSES:
A - 25%
B - 75%
C - 0%
D - 0%
LAST WEEK'S ANSWER:
Answer: a
Topic Domain: 2b
Issue:
Given the show spanning-tree command output, how can you determine what
version of STP is in use?
Solution:
The show spanning-tree output might look like Rapid Spanning Tree is in
use. This is because port states reported reflect 802.1w options.
Notice, however, that the spanning tree version reported is IEEE. This
is the indication for 802.1d.
More Information:
show spanning-tree
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225see/cr/cl
i2.htm#wp3427263
LAST WEEK'S QUESTION:
2-5-2. Examine the Catalyst switch output shown in Exhibit 1. What
version of STP is in use on this switch?
a. 802.1d
b. 802.1w
c. 802.1s
d. 802.1q
Exhibit 1
ASW1#show spanning-tree vlan 1
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address 000d.28c6.6800
Cost 19
Port 2 (FastEthernet0/2)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 000d.2903.8980
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- --------
--------------------------------
Fa0/1 Altn BLK 19 128.1 P2p
Fa0/2 Root FWD 19 128.2 P2p
THIS WEEK'S QUESTION:
5-7-2. You have configured traffic shaping in your Frame Relay WAN
environment. As part of this configuration you have configured your
router to respond to BECN frames received. By what percentage will your
router reduce the rate of transmission if a BECN frame is received?
a. 10%
b. 20%
c. 25%
d. 40%
e. 45%
f. 50%
Question of the Week Compliments of:
TESTiT
http://www.netmasterclass.com/site/written.php
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