thurday Flashcards
(33 cards)
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?
private dedicated lines 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
a broadband service, such as DSL, 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?
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.
Employee workstations need to obtain dynamically assigned IP addresses.
Employees need to connect to the corporate email server through a VPN while traveling.
Which statement describes a characteristic of a WAN?
A WAN operates within the same geographic scope of a LAN, but has serial links.
A WAN provides end-user network connectivity to the campus backbone.
WAN networks are owned by service providers.
All serial links are considered WAN connections.
WAN networks are owned by service providers.
What are two common types of circuit-switched WAN technologies? (Choose two.)
ISDN DSL PSTN ATM Frame Relay
- ISDN*
* PSTN*
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 Layer 2 switch CSU
- DSU*
* CSU*
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.
The network predetermines the route for a packet.
Each packet has to carry only an identifier.
Full addressing information must be carried in each data packet.
What is an advantage of packet-switched technology over circuit-switched technology?
Packet-switched networks do not require an expensive permanent connection to each endpoint.
Packet-switched networks can efficiently use multiple routes inside a service provider network.
Packet-switched networks are less susceptible to jitter than circuit-switched networks are.
Packet-switched networks usually experience lower latency than circuit-switched networks experience.
Packet-switched networks can efficiently use multiple routes inside a service provider network.
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 public infrastructure satellite Internet dedicated
- public infrastructure*
* Internet*
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?
DWDM
ISDN
MPLS
ATM
DWDM
What are two common high-bandwidth fiber-optic media standards? (Choose two.)
SONET SDH ANSI ATM ITU
SONET*
SDH*
Which WAN technology is cell-based and well suited to carry voice and video traffic?
VSAT
Frame Relay
ISDN
ATM
ATM
Which two technologies use the PSTN network to provide an Internet connection? (Choose two.)
MPLS ATM dialup Frame Relay ISDN
- dialup
* ISDN*
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
ISDN
VSAT
Ethernet WAN
Ethernet WAN
Which solution can provide Internet access to remote locations where no regular WAN services are available?
WiMAX
VSAT
Ethernet
municipal Wi-Fi
VSAT
Which WAN technology establishes a dedicated constant point-to-point connection between two sites?
ATM
Frame Relay
ISDN
leased lines
leased lines
A customer needs a metropolitan area WAN connection that provides high-speed, dedicated bandwidth between two sites. Which type of WAN connection would best fulfill this need?
MPLS
Ethernet WAN
circuit-switched network
packet-switched network
*Ethernet WAN
Which feature is used when connecting to the Internet using DSL?
DSLAM
LTE
CMTS
IEEE 802.16
DSLAM
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?
WiMAX
DSL
VPN
cable
VPN
Which wireless technology provides Internet access through cellular networks?
LTE
municipal WiFi
satellite
WiMAX
LTE
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?
municipal Wi-Fi
DSL
WiMAX
802.11
*WiMAX
What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?
VPN
ATM
ISDN
municipal Wi-Fi
*VPN
What can cause a reduction in available bandwidth on a cable broadband connection?
committed information rate
number of subscribers
distance from the central office of the provider
smaller cells
number of subscribers
Which equipment is needed for an ISP to provide Internet connections through cable service?
access server
CMTS
CSU/DSU
DSLAM
*CMTS
Which geographic scope requirement would be considered a distributed WAN scope?
one-to-many global regional local many-to-many one-to-one
many-to-many*
