CCNA 4 R&S: Connecting Networks Chapter 6 v5.02 + v5.03 Exam Answers 2016

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1. 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

2. 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

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

fiber
copper*
radifrequency
wireless

4. 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*

5. What are twcharacteristics of a PPPoE configuration on a Cisccustomer 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 tthe Ethernet interface tlink it tthe dialer interface.

6. Fill in the blank.

DOCSIS specifies the  “MAC”  sub-layer as a Layer 2 requirement that defines either a deterministic access method, TDMA, or S-CDMA.

7. Fill in the blank. Use only an acronym.

“PPPoE”   creates a PPP tunnel through the DSL connection for the purpose of sending PPP frames.

8. What functionality is required on routers tprovide remote workers with VoIP and videoconferencing capabilities?

PPPoE
QoS*
VPN
IPsec

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

CDMA
municipal Wi-Fi*
UMTS
WiMAX

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

QoS
PPPoE*
ISDN
DSL

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

DOCSIS*
802.16
LTE
WIMAX

12. 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*
broadband Internet connection*
VPN server or concentrator
authentication server
multifunction security appliance

13. In which layer of the TCP/IP protocol model does IPsec apply security to network data?

application
transport
internet*
network
access

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

CDMA
S-CDMA*
FDMA
TDMA

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.
Voice signals are on a separate wire pair from ADSL signals.
ADSL signals can distortvoice transmissions.*

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

PPPoE
QoS
WiMax
VPN*

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

The customer router CHAP username and password are independent of what is configured on the ISP router.
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 dialer pool command is applied to the Ethernet interface to link it to the dialer interface.

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

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

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

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

20. Match each type of broadband wireless technology with the correct description. (Not all options are used.)

Place the options in the following order: 
define by the IEEE 802.16 standard -> WiMax 
variants include 2G, 3G, and 4G -> Cellular/Mobile 
ideal solution when no other wirelless access is available -> Satellite
– not scored –

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

SDSL
TDMA
CDMA
ADSL*

22. Which networking technology will ensure reliable and secure remote access when a teleworker connects to a corporate network?

an encrypted VPN tunnel *
routers with QoS capability
broadband (cable or DSL) access to the corporate network
a VoIP and videoconferencing capable connection

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

satellite *
Wi-Fi Mesh
mobile broadband
WiMax

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

WiMax*
satellite
mobile broadband
municipal Wi-Fi

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

QoS*
VPN
PPPoE
IPsec

26. 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*

27. 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 calculated by the speed of propagation of the electromagnetic signal divided by its frequency in cycles per second.*

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 number of waves per second.

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

ppp chap hostname 2

pppoe-client dial-pool-number 2*

ppp chap password 2

interface dialer 2

dialer pool 2*

interface gigabitethernet 0/2

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

UMTS

TDMA

FDMA

CDMA*

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

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

31. 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