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Question 1 of 27
1. Question
1 pointsA 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?Correct
Incorrect
Hint
For this small office, an appropriate connection to the Internet would be through a common broadband service called Digital Subscriber Line (DSL), available from their local telephone service provider. With so few employees, bandwidth is not a significant problem. If the company were bigger, with branch offices in remote sites, private lines would be more appropriate. Virtual Private Networks would be used if the company had employees who needed to connect to the company via Internet. -
Question 2 of 27
2. Question
1 pointsWhich network scenario will require the use of a WAN?Correct
Incorrect
Hint
When traveling employees need to connect to a corporate email server through a WAN connection, the VPN will create a secure tunnel between an employee laptop and the corporate network over the WAN connection. Obtaining dynamic IP addresses through DHCP is a function of LAN communication. Sharing files among separate buildings on a corporate campus is accomplished through the LAN infrastructure. A DMZ is a protected network inside the corporate LAN infrastructure. -
Question 3 of 27
3. Question
1 pointsWhich statement describes a characteristic of a WAN?Correct
Incorrect
Hint
WANs are used to interconnect the enterprise LAN to remote branch site LANs and telecommuter sites. A WAN is owned by a service provider. Although WAN connections are typically made through serial interfaces, not all serial links are connected to a WAN. LANs, not WANs, provide end-user network connectivity in an organization. -
Question 4 of 27
4. Question
1 pointsWhat are two common types of circuit-switched WAN technologies? (Choose two.)Correct
Incorrect
Hint
The two most common types of circuit-switched WAN technologies are the public switched telephone network (PSTN) and the integrated services digital network (ISDN). Frame Relay and ATM are packet-switched WAN technologies. DSL is a WAN technology that offers broadband Internet access. -
Question 5 of 27
5. Question
1 pointsWhich two devices are needed when a digital leased line is used to provide a connection between the customer and the service provider? (Choose two.)Correct
Incorrect
Hint
Digital leased lines require a channel service unit (CSU) and a data service unit (DSU). An access server concentrates dialup modem dial-in and dial-out user communications. Dialup modems are used to temporarily enable the use of analog telephone lines for digital data communications. A Layer 2 switch is used to connect a LAN. -
Question 6 of 27
6. Question
1 pointsWhat is a requirement of a connectionless packet-switched network?Correct
Incorrect
Hint
A connection-oriented system predetermines the network path, creates a virtual circuit for the duration of the packet delivery, and requires that each packet only carry an identifier. A connectionless packet-switched network, such as the Internet, requires each data packet to carry addressing information. -
Question 7 of 27
7. Question
1 pointsWhat is an advantage of packet-switched technology over circuit-switched technology?Correct
Incorrect
Hint
Packet switching does not require a circuit to be established and is able to route packets across a shared network. The cost of packet switching is lower than that of circuit-switching. -
Question 8 of 27
8. Question
1 pointsA 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.)Correct
Incorrect
Hint
VPNs over the Internet provide low cost, secure connections to remote users. VPNs are deployed over the Internet public infrastructure. -
Question 9 of 27
9. Question
1 pointsWhat is a long distance fiber-optic media technology that supports both SONET and SDH, and assigns incoming optical signals to specific wavelengths of light?Correct
Incorrect
Hint
ISDN (Integrated Services Digital Network), ATM (Asynchronous Transfer Mode), and MPLS (Multiprotocol Label Switching) do not describe optic fiber technologies. -
Question 10 of 27
10. Question
1 pointsWhat are two common high-bandwidth fiber-optic media standards? (Choose two.)Correct
Incorrect
Hint
ATM (Asynchronous Transfer Mode) is a Layer 2 technology. ANSI (American National Standards Institute) and ITU (international Telecommunication Union) are standards organizations. -
Question 11 of 27
11. Question
1 pointsWhich WAN technology is cell-based and well suited to carry voice and video traffic?Correct
Incorrect
Hint
ATM is cell-based architecture. The small and fixed cells are well-suited for carrying voice and video traffic because this traffic is intolerant of delay. Video and voice traffic do not have to wait for larger data packets to be transmitted. ISDN is circuit-switched. Frame Relay and VSAT are packet-switched. -
Question 12 of 27
12. Question
1 pointsWhich two technologies use the PSTN network to provide an Internet connection? (Choose two.)Correct
Incorrect
Hint
Dialup and ISDN use the PSTN network to provide WAN connectivity. ATM, MPLS, and Frame Relay require the service providers to build a specific network cloud to support each technology. -
Question 13 of 27
13. Question
1 pointsA 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?Correct
Incorrect
Hint
Ethernet WAN uses many Ethernet standards and it connects easily to existing Ethernet LANs. It provides a switched, high-bandwidth Layer 2 network capable of managing data, voice, and video all on the same infrastructure. ISDN, while capable of supporting both voice and data, does not provide high bandwidth. VSAT uses satellite connectivity to establish a private WAN connection but with relatively low bandwidth. Use of VSAT, ISDN, and Frame Relay require specific network devices for the WAN connection and data conversion between LAN and WAN. -
Question 14 of 27
14. Question
1 pointsWhich solution can provide Internet access to remote locations where no regular WAN services are available?Correct
Incorrect
Hint
VSAT provides Internet access through satellites, which is a solution for remote areas. WiMAX and municipal Wi-Fi are used to provide Internet connections in a metropolitan area. Ethernet is a LAN technology. -
Question 15 of 27
15. Question
1 pointsWhich WAN technology establishes a dedicated constant point-to-point connection between two sites?Correct
Incorrect
Hint
A leased link establishes a dedicated constant point-to-point connection between two sites. ATM is cell-switched. ISDN is circuit-switched. Frame Relay is packet-switched. -
Question 16 of 27
16. Question
1 pointsA 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?Correct
Incorrect
Hint
MPLS can use a variety of underlying technologies such as T- and E-Carriers, Carrier Ethernet, ATM, Frame Relay, and DSL, all of which support lower speeds than an Ethernet WAN. Neither a circuit-switched network, such as the public switched telephone network (PSTN) or Integrated Service Digital Network (ISDN), nor a packet-switched network, is considered high speed. -
Question 17 of 27
17. Question
1 pointsWhich feature is used when connecting to the Internet using DSL?Correct
Incorrect
Hint
Long-Term Evolution (LTE) is used with cellular networks. IEEE 802.16 is used by WiMAX networks which provide high-speed broadband wireless service. The cable modem termination system (CMTS) is used by cable networks. A DSL access multiplexer (DSLAM) is used at an Internet provider location to connect multiple subscriber lines to the provider network. -
Question 18 of 27
18. Question
1 pointsWhich 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?Correct
Incorrect
Hint
VPNs are used by companies for site-to-site connectivity and by remote users to connect securely into the corporate network by the use of VPN client software. -
Question 19 of 27
19. Question
1 pointsWhich wireless technology provides Internet access through cellular networks?Correct
Incorrect
Hint
LTE or LongTerm Evolution is a fourth-generation cellular access technology that supports Internet access. -
Question 20 of 27
20. Question
1 pointsA 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?Correct
Incorrect
Hint
WiMAX provides high-speed broadband service with wireless access and provides broad coverage. Municipal Wi-Fi is used for emergency services such as fire and police. DSL is a wired solution. 802.11 is a wireless LAN solution. -
Question 21 of 27
21. Question
1 pointsWhat is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?Correct
Incorrect
Hint
ISDN and ATM are Layer 1 and 2 technologies that are typically used on private WANs. Municipal WiFi is a wireless public WAN technology. Corporate communications over public WANs should use VPNs for security. -
Question 22 of 27
22. Question
1 pointsWhat can cause a reduction in available bandwidth on a cable broadband connection?Correct
Incorrect
Hint
Because the local subscribers share the same cable bandwidth, as more cable modem subscribers join the service, available bandwidth may decrease. -
Question 23 of 27
23. Question
1 pointsWhich equipment is needed for an ISP to provide Internet connections through cable service?Correct
Incorrect
Hint
The equipment located at a cable service provider office, the cable modem termination system (CMTS), sends and receives digital cable modem signals on a cable network to provide Internet services to cable subscribers. A DSLAM performs a similar function for DSL service providers. A CSU/DSU is used in leased line connections. Access servers are needed to process multiple simultaneous dial-up connections to a Central Office (CO). -
Question 24 of 27
24. Question
1 pointsWhich geographic scope requirement would be considered a distributed WAN scope?Correct
Incorrect
Hint
In a business context, a one-to-one scope would encompass a corporation that has a single branch office. A one-to-many WAN scope would encompass a corporation with multiple branch offices. A distributed WAN would have many branch offices connected to many other sites. -
Question 25 of 27
25. Question
1 pointsA 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?Correct
Incorrect
Hint
A private WAN solution that involves dedicated links between sites offers the best security and confidentiality. Both private and public WAN solutions offer comparable connection bandwidth, depending on the technology chosen. Connecting multiple sites with private WAN connections could be very expensive. The website and file exchange service support is not relevant. -
Question 26 of 27
26. Question
1 pointsQuestion as presented:Sort elements
- devices and inside wiring that are located on the enterprise edge an connect to the carries kink
- devices the provide an interface for customers to connect to within the WAN cloud
- customer devices that pass the data from a customer network for transmission ove the WAN
- a physical connection from the customer to the service provider POP
- services provider facility that connects the PCE to the provider network
- location where the responsibility to the connection changes from the customer to the service provider
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CPE
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DCE
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DTE
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local loop
Correct
Incorrect
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Question 27 of 27
27. Question
1 pointsQuestion as presented:Sort elements
- municipal Wi-Fi
- satellite interface
- DSL
- cable
-
set up by a city to provide free interface access
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slow accsess (upload speed is about one-tenth download speed)
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usse traditional phone network
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uses traditional video network
Correct
Incorrect