Sunday, October 27, 2013

CCNA Discovery 1 - DHomeSB - Chapter 4 v4.0 Answers 2013-2014

Chapter 4 – CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)


Q.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


Q.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 

Q.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 

Q.4. Which device can act as a router, switch, and wireless access point in one package?
• hub
• bridge
• modem
• repeater
• ISR

Q.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

Q.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.

Q.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


Q.8. What term describes each router through which a packet travels when moving between source and destination networks?
• NOC
• ISP
• hop 
• segment

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

Q.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

Q.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

Q.12.

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

Q.13.

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

Q.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

Q.15. What does adherence to cabling standards ensure?
• data security
• no loss of signal
• no electromagnetic interference
• reliable data communications 

Q.16.

Refer to the graphic. What type of cable is shown?
• crossover 
• eight coax channels
• multimode fiber
• single-mode fiber
• straight-through

Q.17. What connector is used to terminate Ethernet unshielded twisted pair (UTP) cabling?
• ST
• BNC
• RJ-11
• RJ-45 

Q.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

Q.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

 Q.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 

Q.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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