CCNA 4 R&S: Connecting Networks Chapter 2 v5.02 + v5.03 Exam Answers 2016

1.

Which WAN technology is cell-based and well suited to carry voice and video traffic?

VSAT
ISDN
Frame Relay
ATM*

2
Which WAN connectivity method would be used in a remote location where there are no service provider networks?

VPN
WiMAX
cable
VSAT*

3
Which network scenario will require the use of a WAN?

Employees need to access web pages that are hosted on the corporate web servers in the DMZ within their building.
Employees need to connect to the corporate email server through a VPN while traveling.*
Employee workstations need to obtain dynamically assigned IP addresses.
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.

4
Which two technologies use the PSTN network to provide an Internet connection? (Choose two.)

ATM
ISDN*
Frame Relay
MPLS
dialup*

5
Which geographic scope requirement would be considered a distributed WAN scope?

regional
one-to-one
global
local
one-to-many
many-to-many*

6
What are two advantages of packet switching over circuit switching? (Choose two.)

A connection through the service provider network is established quickly before communications start.
There are fewer delays in the data communications processes.
The communication costs are lower.*
Multiple pairs of nodes can communicate over the same network channel.*
A dedicated secure circuit is established between each pair of communicating nodes.

7
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?

VPN*
WiMAX
DSL
cable

8. Match the type of WAN device or service to the description. (Not all options are used.)

Place the options in the following order:

— not scored —
CPE -> devices and inside wiring that are located on the enterprise edge and connect to a carrier link.
LOcal Loop -> a physical connection from the customer to the service provider POP
— not scored —
DTE -> customer devices that pass the data from a customer network for transmission over the WAN
DCE -> devices that provide an interface for customers to connect to within the WAN cloud

9
Which wireless technology provides Internet access through cellular networks?

satellite
municipal WiFi
LTE*
WiMAX

10
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.
Each packet has to carry only an identifier.
The network predetermines the route for a packet.

11
A customer needs a WAN virtual connection that provides high-speed, dedicated bandwidth between two sites. Which type of WAN connection would best fulfill this need?

circuit-switched network
packet-switched network
MPLS
Ethernet WAN*

12
Which WAN technology establishes a dedicated constant point-to-point connection between two sites?

ATM
Frame Relay
leased lines*
ISDN

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?

Frame Relay
Ethernet WAN*
ISDN
VSAT

14
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?

WiMAX*
DSL
802.11
municipal Wi-Fi

15
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*
CSU*
Layer 2 switch

16. Match the connectivity type to the description. (Not all options are used.)

Place the options in the following order: 
uses traditional video network -> cable
uses traditional phone network  -> DSL 
set up by a city to provide free Internet access -> Municipal Wi-Fi
slow access (upload speed is about one-tenth download speed) -> Satellite Internet
– not scored –

17
What is a feature of dense wavelength-division multiplexing (DWDM) technology?

It replaces SONET and SDH technologies.
It provides Layer 3 support for long distance data communications.
It provides a 10 Gb/s multiplexed signal over analog copper telephone lines.
It enables bidirectional communications over one strand of fiber.*

18
What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?

municipal Wi-Fi
VPN*
ATM
ISDN

19
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 broadband service, such as DSL, 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
private dedicated lines through their local service provider

20
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?

ATM
MPLS
ISDN
DWDM*

21
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
dedicated
public infrastructure*
Internet*
satellite

22
What are two common high-bandwidth fiber-optic media standards? (Choose two.)

ITU
ANSI
ATM
SDH*
SONET*

23. Which statement describes a characteristic of a WAN?
A WAN provides end-user network connectivity to the campus backbone.
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

24. Which feature is used when connecting to the Internet using DSL?
CMTS
IEEE 802.16
LTE
DSLAM*

25. Which equipment is needed for an ISP to provide Internet connections through cable service?
access server
CSU/DSU
DSLAM
CMTS*

26. Which solution can provide Internet access to remote locations where no regular WAN services are available?

VSAT*
WiMAX
Ethernet
municipal Wi-Fi

27. 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?

lower cost
higher data transmission rate
website and file exchange service support
data security and confidentiality during transmission*

28. Which statement describes cable?

Delivering services over a cable network requires downstream frequencies in the 50 to 860 MHz range, and upstream frequencies in the 5 to 42 MHz range.*
The cable subscriber must purchase a cable modem termination system (CMTS).
Each cable subscriber has dedicated upstream and downstream bandwidth.
Cable subscribers may expect up to 27 Mbps of bandwidth on the upload path.

29. 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.