1. 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*
2. 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.
3. Which statement describes a characteristic of a WAN?
A WAN operates within the same geographic scope of a LAN, but has serial links.
WAN networks are owned by service providers.*
All serial links are considered WAN connections.
A WAN provides end-user network connectivity to the campus backbone.
4. What are two common types of circuit-switched WAN technologies? (Choose two.)
5. 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.)
Layer 2 switch
6. 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.
7. What is an advantage of packet-switched technology over circuit-switched technology?
Packet-switched networks are less susceptible to jitter than circuit-switched networks are.
Packet-switched networks can efficiently use multiple routes inside a service provider network.*
Packet-switched networks do not require an expensive permanent connection to each endpoint.
Packet-switched networks usually experience lower latency than circuit-switched networks experience.
8. 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.)
9. 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?
10. What are two common high-bandwidth fiber-optic media standards? (Choose two.)
11. Which WAN technology is cell-based and well suited to carry voice and video traffic?
12. Which two technologies use the PSTN network to provide an Internet connection? (Choose two.)
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?
14. Which solution can provide Internet access to remote locations where no regular WAN services are available?
15. Which WAN technology establishes a dedicated constant point-to-point connection between two sites?
16. 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?
17. Which feature is used when connecting to the Internet using DSL?
18. 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?
19. Which wireless technology provides Internet access through cellular networks?
20. 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?
21. What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?
22. What can cause a reduction in available bandwidth on a cable broadband connection?
number of subscribers*
committed information rate
distance from the central office of the provider
23. Which equipment is needed for an ISP to provide Internet connections through cable service?
24. Which geographic scope requirement would be considered a distributed WAN scope?
25. A corporation is looking for a solution to connect multiple, newly established remote branch offices. Which consideration is important when selecting a private WAN connection rather than a public WAN connection?
higher data transmission rate
website and file exchange service support
data security and confidentiality during transmission*
26. Match the type of WAN device or service to the descriptions. (Not all options are used.)
devices and inside wiring that are located on the enterprise edge and connect to a carrier link => CPE
a physical connection from the customer to the service provider POP => Local Loop
customer devices that pass the data from a customer network for transmission over the WAN => DTE
devices that provide an interface for customers to connect to within the WAN cloud => DCE
27. Match the connectivity type to the description. (Not all options are used.)
cable => uses traditional video network
DSL => uses traditional phone network
municipal Wi-Fi => set up by a city to provide free Internet access
satellite Internet => slow access (upload speed is about one-tenth download speed)