Guide to Networking Essentials, 8th ed., ISBN 9780357118283
Chapter 10 Solutions-1
Chapter 10 Solutions
Review Questions
1. In which of the following areas does a WAN differ from an internetwork? (Choose all that
apply.)
b. WANs can’t transport Network–layer protocols.
d. WANs don’t use routers.
2. Which of the following is a device used to make WAN connections? (Choose all that apply.)
a. 10BaseT hub
d. Ethernet repeater
3. Which of the following best describes a digital signal?
a. A signal that varies over time continually and smoothly
b. A signal whose states vary much like a lamp controlled by a dimmer switch
4. For what purpose is a CSU/DSU used?
a. Modulates a digital signal into an analog signal
d. Creates a WAN connection over the public switched telephone network
5. Which of the following is a common WAN connection method? (Choose all that apply.)
b. Packet leased
c. VPN over POTS
6. Which of the following is true about ISDN?
a. It uses a modem to modulate/demodulate the signal.
b. Its BRI format consists of two B-channels and one D-channel.
7. Which of the following is a typical situation in which leased lines should be considered?
(Choose all that apply.)
a. Occasional use of the WAN link is needed.
d. You want to pay for only the bandwidth you use.
8. Which of the following combines several communication streams into a single faster
communication stream?
c. CSU
d. DSU
9. Which physical topology does SONET readily support? (Choose all that apply.)
d. Bus
10. Which of the following technologies uses packet switching? (Choose all that apply.)
a. ISDN
c. T1
11. Which of the following technologies provides permanent virtual circuits? (Choose all that
apply.)
a. PSTN
d. ISDN
12. Which technology uses 53-byte cells?
a. POTS
d. X.25
13. To maintain security, WAN connections over the Internet should use which of the following?
a. BRI
b. LANE
14. What type of device is required to connect to a dedicated digital communication line?
a. Modem
b. NIC
15. Which technology runs at 1 GBps at distances up to 70 km and has largely replaced frame
relay and ATM?
a. Cable modem
b. MPLS
16. Which term best describes the place in a WAN connection where the customer’s
responsibility ends and the provider’s responsibility begins?
a. Data circuit-terminating equipment
d. Central office
17. Which of the following places data on the local loop?
c. Router
d. CPE
18. Which of the following is the equipment at the customer site that’s the responsibility of the
customer?
a. DTE
b. DCE
19. Which of the following is a VPN protocol supported by Windows remote access? (Choose all
that apply.)
c. HTTP
20. Which of the following is a component of the PPP protocol? (Choose all that apply.)
c. VPN
d. RDP
21. Which of the following can best be described as developing applications by using a service
provider’s development tools and infrastructure?
a. Hosted applications
d. Hosted infrastructure
22. Which wireless WAN technology has a standard for fixed and mobile devices?
c. Satellite
d. LTE-Advanced
23. Which wireless WAN technology might not be suitable for voice applications because of
latency?
a. WiMAX
d. LTE-Advanced
Challenge Labs
Challenge Lab 10-1
• What tunneling protocol was used to make the VPN connection? Most likely, PPTP was used unless
• What authentication protocol was used to authenticate the remote user? MSCHAP v2 was probably
• What property did you have to configure on the user account to allow the user to make the remote
Guide to Networking Essentials, 8th ed., ISBN 9780357118283
Chapter 10 Solutions-6
Case Projects
Case Project 10-1
Answers will vary. The solution is configuring a server with a connection to the Internet as a VPN server,
Case Project 10-2
Each proposal will vary. Salespeople travel to different locations and should use a VPN client to connect to
the main office through the Internet. Because most businesses that the salespeople visit have high-speed