M7 - (WAN Concepts) Flashcards
Which two options describe a WAN?
(A WAN provides networking services over large geographical areas.) and (WAN services are provided for a fee.)
Which topology type describes the virtual connection between source to destination?
Logical Topology
Which type of WAN network design is the most fault-tolerant?
Fully meshed topology
Which is a type of WAN carrier connection that provides redundancy?
Dual-career WAN connection
Which two statements about the WAN OSI Layer 1 are true? (Choose two.)
It describes how data will be encapsulated into a frame.
It describes the electrical, mechanical, and operational components needed to transmit bits.
It includes protocols such as PPP, HDLC, and Ethernet.
It includes protocols such as SDH, SONET, and DWDM.
(It describes the electrical, mechanical, and operational components needed to transmit bits.) and (It includes protocols such as SDH, SONET, and DWDM.)
Which WAN term defines the point where the subscriber connects to the service providers network.
Customer Premises Equipment (CPE)
Data Communications Equipment (DCE)
Demarcation point
Local Loop
Point-of-Presence (POP)
Point-of-Presence (POP)
Which two devices operate in a similar manner to the voiceband modem but use higher broadband frequencies and transmission speeds. (Choose two.)
Cable Modem
CSU/DSU
DSL Modem
Optical Converter
Voiceband Modem
(Cable Moden) and (DSL Modem)
Which communication method is used in all WAN connections?
Circuit-Switched
Packet-Switched
Parallel
Serial
Serial
Which two WAN connectivity options are circuit-switched technologies? (Choose two.)
ATM
Ethernet WAN
Frame Relay
ISDN
PSTN
(ISDN) and (PSTN)
Which two WAN connectivity options are packet-switched technologies? (Choose two.)
Ethernet WAN
Frame Relay
ISDN
PSTN
(Ethernet WAN) and (Frame Relay)
Which service provider fiber-optic technology increases the data-carrying capacity using different wavelengths?
DWDM
SDH
SONET
DWDM
Which traditional WAN connectivity option uses T-Carrier or E-Carrier lines?
ATM
Frame Relay
ISDN
Leased lines
PSTN
Leased Lines
Which two traditional WAN connectivity options are circuit-switched? (Choose two.)
ATM
Frame Relay
ISDN
Leased Lines
PSTN
(ISDN) and (PSTN)
Which two traditional WAN connectivity options are packet-switched? (Choose two.)
ATM
Frame Relay
ISDN
Leased Lines
PSTN
(ATM) and (Frame Relay)
Which WAN connectivity option is based on Ethernet LAN Technology?
ATM
Cable
DSL
Metro Ethernet
MPLS
Metro Ethernet
Which is a server provider WAN solution that uses labels to direct the flow of packets through the provider network?
ATM
Cable
DSL
Metro Ethernet
MPLS
MPLS
A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this scenario?
LAN
MAN
WAN
WLAN
WAN
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
VPN
Which medium do service providers use to transmit data over WAN connections with SONET, SDH, and DWDM?
Fiber optic
Satellite
Wi-Fi
Copper
Fiber Optic
Which statement describes a characteristics of a WAN?
A WAN operates within the same geographic scope of a LAN, but has serial links.
WAN network are owned by a service providers.
All serial links are considered WAN connections.
A WAN provides end-user network connectivity to the campus backbone.
WAN network are owned by a service providers.
Which type of network would be used by a company to connect locations across the country?
WAN
LAN
WLAN
SAN
WAN
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
A broadband service, such as DSL, through their local service provider
To which two layers of the OSI model do WAN technologies provide services? (Choose two.)
Network layer
Session layer
Physical layer
Transport layer
Data link layer
Presentation layer
(Physical Layer) and (Presentation Layer)
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?
Circuit-switched network
Ethernet WAN
MPLS
Packet-switched network
Ethernet WAN
An intercity bus company wants to offer constant Internet connectivity to the users traveling on the buses. Which two types of WAN infrastructure would meet the requirements? (Choose two.)
Private infrastructure
Public infrastructure
Dedicated
Circuit-switched
Cellular
(Public infrastructure) and (Cellular)
An enterprise has four branches. The headquarters needs full connectivity to all branches. The branches do not need to be connected directly to each other. Which WAN topology is most suitable?
Bus
Full mesh
Hub and spoke
Mesh
Point-to-point
Hub and spoke
What is a characteristic of a WAN?
A WAN is typically owned by an enterprise which wants to interconnect its LANs.
WAN service providers include carriers such as a telephone network or satellite service.
WANs always use physical cables to connect LANs.
A WAN operates inside the geographic scope of a LAN.
WAN service providers include carriers such as a telephone network or satellite service.
What are two common types of circuit-switched WAN technologies? (Choose two.)
Frame Relay
DSL
PSTN
ATM
ISDN
(PSTN) and (ISDN)
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
(Public infrastructure) and (Internet)
