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 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
a broadband service, such as DSL, through their local service provider
Which network scenario will require the use of a WAN?
Employee workstations need to obtain dynamically assigned IP addresses.
Employees need to connect to the corporate email server through a VPN while traveling.
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.
Employees need to access web pages that are hosted on the corporate web servers in the DMZ within their building.
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.)
access server
CSU
Layer 2 switch
DSU
dialup modem
What are two advantages of packet switching over circuit switching? (Choose two.)
The communication costs are lower.
There are fewer delays in the data communications processes.
Multiple pairs of nodes can communicate over the same network channel.
A dedicated secure circuit is established between each pair of communicating nodes.
A connection through the service provider network is established quickly before communications start.
What is a requirement of a connectionless packet-switched network?
Each packet has to carry only an identifier.
The network predetermines the route for a packet.
Full addressing information must be carried in each data packet.
A virtual circuit is created for the duration of the packet delivery.
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?
ISDN
MPLS
ATM
DWDM
What are two common high-bandwidth fiber-optic media standards? (Choose two.)
ANSI
ATM
ITU
SDH
SONET
What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?
ATM
ISDN
municipal Wi-Fi
VPN
What is a feature of dense wavelength-division multiplexing (DWDM) technology?
It replaces SONET and SDH technologies.
It enables bidirectional communications over one strand of fiber.
It provides Layer 3 support for long distance data communications.
It provides a 10 Gb/s multiplexed signal over analog copper telephone lines.
Which WAN technology establishes a dedicated constant point-to-point connection between two sites?
ATM
ISDN
leased lines
Frame Relay
Which WAN technology is cell-based and well suited to carry voice and video traffic?
ATM
ISDN
VSAT
Frame Relay
Which two technologies use the PSTN network to provide an Internet connection? (Choose two.)
ATM
ISDN
MPLS
dialup
Frame Relay
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?
VSAT
ISDN
Frame Relay
Ethernet WAN
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
Ethernet WAN
MPLS
packet-switched network
Which WAN connectivity method would be used in a remote location where there are no service provider networks?
cable
VPN
VSAT
WiMAX
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?
802.11
municipal Wi-Fi
DSL
WiMAX
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?
cable
DSL
VPN
WiMAX
Which wireless technology provides Internet access through cellular networks?
satellite
municipal WiFi
LTE
WiMAX
Which geographic scope requirement would be considered a distributed WAN scope?
local
one-to-one
one-to-many
many-to-many
regional
global
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.)
public infrastructure
private infrastructure
Internet
dedicated
satellite
Match the type of WAN device or service to the description. (Not all options are used.)
Match the connectivity type to the description. (Not all options are used.)
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