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Registration date : 2007-02-22

PostSubject: module 12   Fri Nov 30, 2007 5:44 pm

CCNP 2
Chapter 12

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
In which data over ADSL architecture is the user PC required to run client software?

PPPoA
PPPoE X
CAP
RFC 1483/2684
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A network administrator has partially set up the serial interfaces on the company router which connected to the ISP with an ADSL link. The ISP is running DHCP services to customers. Partial output from the running-config command is:


interface ethernet0
ip address 10.1.1.1 255.255.255.0
no cdp enable
no shut
!
interface ethernet1
no cdp enable
no shut
!
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which command is used to assign an IP address to ethernet1?

ip address dhcp
no ip address
ip address unassigned
ip address negotiated X
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which solutions can a cable operator of a Hybrid Fiber Cable (HFC) apply when there is constant congestion on the line? (Choose two.)

run fiber to each home
allocate another downstream channel X
allocate another upstream channel
allocate additional bandwidth to affected customers
run fiber deeper into the neighborhood X
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which bridging method is suited to a small ISP?

ATM PVC
PPP over Ethernet (PPPoE)
RFC 1483 bridging X
PPP over ATM (PPPoA)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which ADSL standard is supported by ANSI and ITU?

CAP
DMT X
FDM
QAM
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which standards or organizations are associated with cable broadband networks?(Choose three.)

NTSC X
PAL X
ANSI
SECAM X
OSI
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which Data-over-Cable Service Interface Specifications (DOCSIS) standard provides 30 Mbps in the upstream direction?

DOCSIS 1.0
DOCSIS 1.1
DOCSIS 2.0 X
Euro-DOCSIS
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
How do cable modems transfer data across local cable TV lines?

carries analog signals end-to-end
carries digital signals end-to-end
toggles between radio frequency and analog data signals
modulates digital data to an RF and transmits it at a specific frequency X
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
What is the most popular modulation technique that ADSL uses?

carrierless amplitude modulation/phase modulation (CAP)
frequency division multiplexing (FDM)
quadrature phase shift keying (QPSK)
discrete multitone modulation (DMT)
consumer/Mass-Market DMT (G.lite) X
quadrature amplitude modulation (QAM)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which modulation techniques can ADSL use? (Choose three.)

carrierless amplitude modulation/phase modulation (CAP) X
frequency division multiplexing (FDM)
quadrature phase shift keying (QPSK)
discrete multitone modulation (DMT) X
consumer/Mass-Market DMT (G.lite) X
quadrature amplitude modulation (QAM)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which of the following is a characteristic of ADSL?

It is designed to deliver more bandwidth downstream than upstream. X
It is designed to deliver more bandwidth upstream than downstream.
The upstream rates range from 1.5 to 9 Mbps.
The downstream rates range from 16 to 640 Kbps.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
What determines the power level and frequency that a cable modem transmits data from a PC?

the Network Interface Card (NIC)
the CMTS X
the cable modem
the media type
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Which form of DSL uses the frequency band of 20khz to 1Mhz?

IDSL
SDSL
ADSL X
VDSL
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
What is the maximum distance ADSL transmissions will work?

18,000 meters
5460 meters X
17,068 meters
2478 meters
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
What are two characteristics of DSL? (Choose two.)

uses fiber for local loop transmission
uses copper for local loop transmission X
uses Layer 2 technology
uses Layer 1 technology X
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