CCNA Discovery 1: DHomeSB Chapter 4 Exam Answers v4.0

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?

CCNA Discovery 1: DHomeSB Chapter 4 Exam Answers v4.0 1

  • STP
  • UTP
  • coax
  • fiber

Explanation: Network cabling include different types of cables:

  • UTP cable consists of four pairs of color-coded wires that have been twisted together and then encased in a flexible plastic sheath.
  • STP cable uses four pairs of wires, each wrapped in a foil shield, which are then wrapped in an overall metallic braid or foil.
  • Coaxial cable uses a copper conductor and a layer of flexible plastic insulation surrounds the copper conductor.
  • Fiber cable is a flexible, extremely thin, transparent strand of glass surrounded by plastic insulation.

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

CCNA Discovery 1: DHomeSB Chapter 4 Exam Answers v4.0 2

  • 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?

CCNA Discovery 1: DHomeSB Chapter 4 Exam Answers v4.0 3

  • 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

Explanation: When terminated improperly, each cable is a potential source of physical layer performance degradation.

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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