miércoles, 19 de agosto de 2015

CCNA 4 Cisco v5.0 Chapter 2 - Answers



1. Which WAN technology is cell-based and well suited to carry voice and video traffic?

VSAT
ISDN
Frame Relay
ATM


2. Which WAN connectivity method would be used in a remote location where there are no service provider networks?

VPN
WiMAX
cable
VSAT


3. Which network scenario will require the use of a WAN?

Employees need to access web pages that are hosted on the corporate web servers in the DMZ within their building.
Employees need to connect to the corporate email server through a VPN while traveling.
Employee workstations need to obtain dynamically assigned IP addresses.
Employees in the branch office need to share files with the headquarters office that is located in a separate building on the same campus network.


4. Which two technologies use the PSTN network to provide an Internet connection? (Choose two.)

ATM
ISDN
Frame Relay
MPLS
dialup


5. Which geographic scope requirement would be considered a distributed WAN scope?

regional
one-to-one
global
local
one-to-many
many-to-many


6. What are two advantages of packet switching over circuit switching? (Choose two.)

A connection through the service provider network is established quickly before communications start.
There are fewer delays in the data communications processes.
The communication costs are lower.
Multiple pairs of nodes can communicate over the same network channel.
A dedicated secure circuit is established between each pair of communicating nodes.


7. Which connectivity method would be best for a corporate employee who works from home two days a week, but needs secure access to internal corporate databases?

VPN
WiMAX
DSL
cable


8. 


Place the options in the following order:
- not scored – 
CPE 
Local Loop 
– not scored – 
DTE 
DCE


9. Which wireless technology provides Internet access through cellular networks?

satellite
municipal WiFi
LTE
WiMAX


10. What is a requirement of a connectionless packet-switched network?

Full addressing information must be carried in each data packet.
A virtual circuit is created for the duration of the packet delivery.
Each packet has to carry only an identifier.
The network predetermines the route for a packet.


11. A customer needs a WAN virtual connection that provides high-speed, dedicated bandwidth between two sites. Which type of WAN connection would best fulfill this need?

circuit-switched network
packet-switched network
MPLS
Ethernet WAN


12. Which WAN technology establishes a dedicated constant point-to-point connection between two sites?

ATM
Frame Relay
leased lines
ISDN


13. A company needs to interconnect several branch offices across a metropolitan area. The network engineer is seeking a solution that provides high-speed converged traffic, including voice, video, and data on the same network infrastructure. The company also wants easy integration to their existing LAN infrastructure in their office locations. Which technology should be recommended?

Frame Relay
Ethernet WAN
ISDN
VSAT


14. A home user lives within 10 miles (16 kilometers) of the Internet provider network. Which type of technology provides high-speed broadband service with wireless access for this home user?

WiMAX
DSL
802.11
municipal Wi-Fi


15. Which two devices are needed when a digital leased line is used to provide a connection between the customer and the service provider? (Choose two.)

dialup modem
access server
DSU
CSU
Layer 2 switch


16. 


Place the options in the following order: 
uses traditional video network 
uses traditional phone network 
set up by a city to provide free Internet access 
slow access (upload speed is about one-tenth download speed) 
– not scored -


17. What is a feature of dense wavelength-division multiplexing (DWDM) technology?

It replaces SONET and SDH technologies.
It provides Layer 3 support for long distance data communications.
It provides a 10 Gb/s multiplexed signal over analog copper telephone lines.
It enables bidirectional communications over one strand of fiber.


18. What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?

municipal Wi-Fi
VPN
ATM
ISDN


19. A small company with 10 employees uses a single LAN to share information between computers. Which type of connection to the Internet would be appropriate for this company?

a broadband service, such as DSL, through their local service provider
a dialup connection that is supplied by their local telephone service provider
Virtual Private Networks that would enable the company to connect easily and securely with employees
private dedicated lines through their local service provider


20. What is a long distance fiber-optic media technology that supports both SONET and SDH, and assigns incoming optical signals to specific wavelengths of light?

ATM
MPLS
ISDN
DWDM


21. A new corporation needs a data network that must meet certain requirements. The network must provide a low cost connection to sales people dispersed over a large geographical area. Which two types of WAN infrastructure would meet the requirements? (Choose two.)

private infrastructure
dedicated
public infrastructure
Internet
satellite


22. What are two common high-bandwidth fiber-optic media standards? (Choose two.)

ITU
ANSI
ATM
SDH
SONE




Espero haber ayudado en algo. Hasta la próxima oportunidad!








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