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8/10/2012

CCNA 1 Discovery V 4.0 Chapter 4 Answer


CCNA 1 Discovery V 4.0 Chapter 4 Answer
              
1. 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
               
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 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.

6             


Refer to the graphic. What type of cabling is shown?
                STP
                UTP
                coax
                fiber
               
7. 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

8             


Refer to the graphic. What type of cabling is shown?
                STP
                UTP
                coax
                fiber
               
9. 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
            
10. 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
            
11. 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
            
12. What does the tracert command test?
                NIC functionality
                the ISP bandwidth
                the network path to a destination
                the destination application functionality
            
13. What term describes each router through which a packet travels when moving between source and destination networks?
                NOC
                ISP
                hop
                segment
            
14. 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
           
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. 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
           
19. 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
            
20. 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
            
21. 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




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