Cisco - CCNA 4 - Chapter 6 version 5.03 Exam Answers

1. What are two disadvantages of employing teleworkers in an organization? (Choose two.)

   • increased usage of sick or vacation days
   • increased difficulty of tracking task progress
   • slower customer service response times
   • the need to implement a new management style
   • increase in office expenses

2. Which technology provides a secure connection between a SOHO and the headquarters office?

   • VPN
   • WiMax
   • QoS
   • PPPoE

3. What functionality is required on routers to provide remote workers with VoIP and videoconferencing capabilities?

   • IPsec
   • QoS
   • VPN
   • PPPoE

4. What are two Layer 2 WAN technologies that can provide secure remote connections between corporate branch offices? (Choose two.)

   • LTE
   • Frame Relay
   • leased lines
   • QoS
   • IPsec

5. Which two network components does a teleworker require to connect remotely and securely from home to the corporate network? (Choose two.)

   • VPN client software or VPN-enabled router
   • multifunction security appliance
   • broadband Internet connection
   • VPN server or concentrator
   • authentication server

6. Which two OSI Layer 1 specifications does DOCSIS define for a cable Internet connection? (Choose two.)

   • a deterministic media access method
   • channel bandwidth
   • modulation technique
   • VPN tunneling requirements
   • the separation of the voice and data transmissions

7. Which cable network communication technology is secure, extremely resistant to noise, and employs spread-spectrum technology?

   • FDMA
   • CDMA
   • TDMA
   • S-CDMA

8. Which standard specifies the channel frequencies and the deterministic access method of cable networks?

   • DOCSIS
   • LTE
   • WiMAX
   • 802.16

9. A company is looking for the least expensive broadband solution that provides at least 10 Mb/s download speed. The company is located 5 miles from the nearest provider. Which broadband solution would be appropriate?

   • satellite
   • DSL
   • WiMax
   • cable

10. What two layers of the OSI model are defined by DOCSIS? (Choose two.)

    • Layer 1
    • Layer 2
    • Layer 3
    • Layer 4
    • Layer 5
    • Layer 6
    • Layer 7

11. What mobile broadband communication Layer 2 technology uses a special coding scheme to assign each transmitter a specific code?

    • CDMA
    • TDMA
    • FDMA
    • UMTS

12. What are two features of wavelengths in the electromagnetic spectrum? (Choose two.)

    • They are the rate at which current or voltage cycles occur.
    • They are the distance from the peak of one radio wave to the peak of the next radio wave.
    • They are the distance from the peak of one radio wave to the trough of the next radio wave.
    • They are calculated by the speed of propagation of the electromagnetic signal divided by its frequency in cycles per second.
    • They are calculated by the number of waves per second.

13. What advantage does DSL have compared to cable technology?

    • DSL upload and download speeds are always the same.
    • DSL is faster.
    • DSL has no distance limitations.
    • DSL is not a shared medium.

14. Which medium is used for delivering data via DSL technology through PSTN?

    • fiber
    • copper
    • radio frequency
    • wireless

15. How is voice traffic affected when the customer uses ADSL technology?

    • No special equipment is needed to separate voice and data signals.
    • Voice traffic is interrupted if the ADSL service fails.
    • ADSL signals can distort voice transmissions.
    • Voice signals are on a separate wire pair from ADSL signals.

16. Which DSL technology provides higher downstream bandwidth to the user than upstream bandwidth?

    • ADSL
    • SDSL
    • CDMA
    • TDMA

17. Which broadband wireless technology is based on the 802.11 standard?

    • municipal Wi-Fi
    • WiMAX
    • CDMA
    • UMTS

18. Which type of long distance telecommunication technology provides point-to-point connections and cellular access?

    • WiMax
    • municipal Wi-Fi
    • satellite
    • mobile broadband

19. Which broadband technology would be best for a user that needs remote access when traveling in mountains and at sea?

    • Wi-Fi Mesh
    • mobile broadband
    • WiMax
    • satellite

20. What technology provides service providers the capability to use authentication, accounting, and link management features to customers over Ethernet networks?

    • PPPoE
    • DSL
    • QoS
    • ISDN

21. Why is the MTU for a PPPoE DSL configuration reduced from 1500 bytes to 1492?

    • to enable CHAP authentication
    • to reduce congestion on the DSL link
    • to accommodate the PPPoE headers
    • to establish a secure tunnel with less overhead

22. What are two characteristics of a PPPoE configuration on a Cisco customer router? (Choose two.)

    • The PPP configuration is on the dialer interface.
    • An MTU size of 1492 bytes is configured on the Ethernet interface.
    • The Ethernet interface does not have an IP address.
    • The customer router CHAP username and password are independent of what is configured on the ISP router.
    • The dialer pool command is applied to the Ethernet interface to link it to the dialer interface.

23. When PPPoE is configured on a customer router, which two commands must have the same value for the configuration to work? (Choose two.)

    • dialer pool 2
    • interface dialer 2
    • ppp chap password 2
    • interface gigabitethernet 0/2
    • pppoe-client dial-pool-number 2
    • ppp chap hostname 2