martes, 25 de agosto de 2015

CCNA 4 Cisco v5.0 Chapter 6 - Answers



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. Why is the MTU for a PPPoE DSL configuration reduced from 1500 bytes t1492?

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


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.


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



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