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Jumat, 26 Oktober 2012

Exam Viewer - DHomesb Chapter 4 - CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)

1.   Which definition describes the term Internet?
a group of PCs connected together on a LAN
a group of PCs connected together by an ISP
a network of networks that connects countries around the world

a worldwide collection of networks controlled by a single organization
2.   What type of connection point is a point of presence (POP)?
between a client and a host
between two local networks
between a computer and a switch
between an ISP and a home-based LAN

3.   What is the term for the group of high-speed data links that interconnect ISPs?
Internet LAN
ISP backbone
Internet gateways
Internet providers
Internet backbone
4.   Which device can act as a router, switch, and wireless access point in one package?
hub
bridge
modem
repeater
ISR
5.   What are three characteristics of business class ISP service? (Choose three.)
fast connections
extra web space

free Windows upgrade
cheapest cost available to all users
additional e-mail accounts

replacement hardware at no cost

6.   What is a major characteristic of asymmetric Internet service?
Download speeds and upload speeds are equal.
Download speeds are slower than upload speeds.
Upload speeds and download speeds are different.

Upload speeds and download speeds are irrelevant.
7.   Which three elements are required to successfully connect to the Internet? (Choose three.)
an IP address
file sharing enabled
a network connection

server services enabled
access to an Internet service provider

an address obtained directly from the RIR
8.   What term describes each router through which a packet travels when moving between source and destination networks?
NOC
ISP
hop

segment
9.   What does the tracert command test?
NIC functionality
the ISP bandwidth
the network path to a destination

the destination application functionality
10.   What type of end-user connectivity requires that an ISP have a DSLAM device in their network?
analog technology
cable modem technology
digital subscriber line technology

wireless technology
11.   Why would an ISP require a CMTS device on their network?
to connect end users using cable technology
to connect end users using analog technology
to connect end users using wireless technology
to connect end users using digital subscriber line technology
12.   
Refer to the graphic. What type of cabling is shown?
STP
UTP
coax
fiber
13.   









Refer to the graphic. What type of cabling is shown?
STP
UTP

coax
fiber
14.   Which two places are most appropriate to use UTP cabling? (Choose two.)
between buildings
in a home office network

where EMI is an issue
in a cable TV network
inside a school building

in a manufacturing environment with hundreds of electrical devices
15.   What does adherence to cabling standards ensure?
data security
no loss of signal
no electromagnetic interference
reliable data communications
16.   

Refer to the graphic. What type of cable is shown?
crossover
eight coax channels
multimode fiber
single-mode fiber
straight-through
17.   What connector is used to terminate Ethernet unshielded twisted pair (UTP) cabling?
ST
BNC
RJ-11
RJ-45
18.   Which two characteristics describe copper patch panels? (Choose two.)
uses RJ-11 jacks
uses RJ-45 jacks

supports only data transmissions
allows quick rearrangements of network connections

forwards transmissions based on MAC addresses
19.   What are two advantages of cable management? (Choose two.)
requires no preplanning
aids in isolation of cabling problems
protects cables from physical damage

provides compliance with future standards
provides a short-term solution for cable installation
20.   What are two common causes of signal degradation when using UTP cabling? (Choose two.)
installing cables in conduit
having improper termination

losing light over long distances
installing low quality cable shielding
using low quality cables or connectors
21.   What are three commonly followed standards for constructing and installing cabling? (Choose three.)
pinouts
cable lengths

connector color
connector types

cost per meter (foot)
tensile strength of plastic insulator

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