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CCIE Written, Service Provider: DSL : 350-022 Exam

Exam Number/Code: 350-022
Exam Name: CCIE Service Provider Written exam
VUE Code: 350-022
Questions Type: Single choice,
Real Exam Question Numbers: 100 questions
Exam Language(s): English

Written Exam

General Information
CCIE Service Provider Written Exam #350-022
The written exam is a two-hour, multiple choice test with 100 questions covering areas

such as Layer 2 networking, IP protocols, MPLS, VPN, security, quality of service and

high availability technologies. The exam is closed book and no outside reference

materials are allowed.

Beta Exams
Each written exam version is offered first in beta form at a discounted cost of US$50.

Beta exams are scheduled as you would other written exams and are available at all

worldwide testing locations. A passing grade on the beta qualifies a candidate to

schedule the lab exam. Results, however, are typically not available until six to eight

weeks after the close of the beta. A candidate may attempt the beta exam only once

during the beta period.

Cost
Written exams are administered by independent vendors at cost of US$300. Costs may vary

due to exchange rates and local taxes (VAT, GST).

Expiration
Candidates must make an initial attempt of the CCIE lab exam within 18 months of passing

the CCIE written exam. Valid passing scores on written exams expire after 18 months.

Locations
Written exams are taken at any worldwide VUE testing facility. See their websites for

more details.

Recertification
In addition to the comprehensive CCIE SP written exam #350-022, candidates may also take

one of the following exams for recertification purposes: SP Optical #350-020, SP Cable

#350-022, SP WAN Switching #350-023 or SP Content Networking #350-026. Half of the exam

covers general IP networking (50 questions) and the other half covers the specific

service delivery technology (50 questions). The blueprints for the exams are available

online as indicated in the links. As of February 1, 2007, these individual technology

exams no longer qualify a candidate for the CCIE SP lab exam.

Results
Written exam results are Pass/Fail and are available immediately following the exam. The

passing score is set by statistical analysis and is subject to periodic change.

Retakes
Candidates must wait five days between attempts at the written exam. Once a candidate

has passed the exam, he or she may not take the same exam again (for recertification

purposes) for at least 180 days.

The written exam is a two-hour, multiple choice test with 100 questions covering areas

such as Layer 2 networking, IP protocols, MPLS, VPN, security, quality of service and

high availability technologies. The exam is closed book and no outside reference

materials are allowed.

“CCIE Service Provider Written exam”, also known as 350-022 exam, is

a Cisco certification.
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QUESTION 16:
Your boss at PassGuide .com is curios about DSL. What is the effect of changing DMT
interleaved delay from 16 milliseconds to 2 milliseconds?
A. Fewer ATM PVCs can be provisioned on the DSL line.
B. Latency is reduced, but error correction effectiveness may also be reduced.
C. Latency remains the same, but faster error correction occurs.
D. Latency remains the same, but throughput is increased
Answer: B
QUESTION 17:
Your boss at PassGuide .com is curios about DSL. What ADSL DMT line rate requires
(occupies) the most bandwidth on a telephone line?
A. 8 mbps downstream, 800 kbps upstream on 1 kft (300 meters) of cable.
B. 8 mbps downstream, 800 kbps upstream on 9 kft (2.75 km) of cable.
C. 1 mbps downstream, 256 kbps upstream on 1 kft (300 meters) of cable.
D. 512 kbps downstream, 128 kbps upstream on 17 kft (5.2 km) of cable.
Answer: A
QUESTION 18:
You work as a network engineer at PassGuide .com. A DMT DSL modem is working on a
“shared line” with standard telephone service (POTS). When the subscriber picks up the
telephone handset, the DSL modem untrains, then retrains at a lower DSL rate. When the
telephone is not off-hook, the DSL modem will train at the subscribed rate (normal
operation).
Which of the following is the probably cause of this symptom?
A. An improper DSL line rate was provisioned for shared lines.
B. A microfilter or splitter was not correctly installed between the telephone and the line.
C. The noise level on the telephone line will not allow DSL and POTS voice at the same time.
D. An incorrect DMT operating mode was provisioned in the DSLAM.
Answer: B
QUESTION 19:
350-022
www.actualtest.org – The Power of Knowing
Network topology exhibit
You work as a network engineer at PassGuide .com. Host PassGuide 1 and Host PassGuide 2 are
on Ethernet LANs in different buildings. A serial line is installed between two Cisco routers
using Cisco HDLC serial line encapsulation. Routers PassGuide A and PassGuide B are
configured to route IP traffic. Host PassGuide 1 sends a packet to Host PassGuide 2. A line hit
on the serial line causes an error in the packet.
When this is detected, the retransmission is sent by:
A. Host PassGuide 1
B. Host PassGuide 2
C. Router PassGuide A
D. Router PassGuide B
E. Protocol analyzer
Answer: A
QUESTION 20:
Exhibit
You work as a network engineer at PassGuide .com. A DSLAM is using Reed-Solomon
forward error correction on a DMT DSL line. The DSL service is using TCP/IP over ATM
over DSL. A high number of upstreams RS uncorrected errors are occurring on the DSL
line, as reported by the DSLAM in the status message shown in the exhibit.
What is the result of the uncorrected errors?
A. The DSL frames will be continuously retransmitted by the DSL transceivers until an
error-free frame is received.
B. If errors on the DSL line can not be corrected by the RS algorithm, the line will be
automatically taken out of service.
C. The errored data resulting from uncorrected layer-1 errors will be handled by TCP.
D. When Reed-Solomon forward error correction is used, all errors are corrected at layer 1. The
uncorrected state was present only until forward error correction algorithms corrected the errors.
Answer: C