WAN Technologies CH 1-3 Exam

Pregunta 1 de 62

1

Refer to the exhibit. Which type of ISP connectivity to the service provider edge is being used by company A?

Selecciona una de las siguientes respuestas posibles:

multihomed
dual-multihomed
dual-homed
single-homed

Explicación

Pregunta 2 de 62

1

Refer to the exhibit. Which Cisco Enterprise Architecture module is shown?

Selecciona una de las siguientes respuestas posibles:

remote
campus infrastructure
service provider edge
enterprise campus
enterprise edge

Explicación

Pregunta 3 de 62

1

The network design for a college with users at five sites is being developed. Where in the campus network architecture would servers used by all users be located?

Selecciona una de las siguientes respuestas posibles:

data center
services
enterprise edge
access-distribution

Explicación

Pregunta 4 de 62

1

Which network architecture functions through a combination of technologies that include wired, wireless, security, and more?

Selecciona una de las siguientes respuestas posibles:

Cisco Borderless
Cisco Enterprise Edge
Cisco Enterprise Branch
Cisco Enterprise Campus

Explicación

Pregunta 5 de 62

1

Which network module is the fundamental component of a campus design?

Selecciona una de las siguientes respuestas posibles:

services module
enterprise edge
data center
access-distribution module

Explicación

Pregunta 6 de 62

1

What is one advantage to designing networks in building block fashion for large companies?

Selecciona una de las siguientes respuestas posibles:

increased network access time
failure isolation
redundancy
mobility

Explicación

Pregunta 7 de 62

1

A network engineer wants to redesign the wireless network and make use of wireless network controllers that manage the many deployed wireless access points. In which network design module of the campus network architecture would the centralized wireless network controllers be found?

Selecciona una de las siguientes respuestas posibles:

access-distribution
data center
services
enterprise edge

Explicación

Pregunta 8 de 62

1

Refer to the exhibit. Which type of Cisco hierarchical LAN design model is used at school site 1?

Selecciona una de las siguientes respuestas posibles:

three-tier
7 layer
two-tier collapsed core
3 layer

Explicación

Pregunta 9 de 62

1

Which layer of the Cisco Collaboration Architecture contains unified communications and conference software such as Cisco WebEx Meetings, WebEx Social, Cisco Jabber, and TelePresence?

Selecciona una de las siguientes respuestas posibles:

applications and devices
services module
enterprise WAN
service provider edge

Explicación

Pregunta 10 de 62

1

Why would a company want network engineers to adhere to structured engineering principles when designing networks?

Selecciona una de las siguientes respuestas posibles:

The resiliency of a network depends on being able to modify portions of the network, add services, or increase network capacity without adding new hardware devices.
A hierarchical network model is a useful high-level tool for designing a reliable network infrastructure, although it increases the complexity of network design.
The network can be easily designed because of the separation of the various functions that exist on a network into modules.
The network is not expected to remain available under abnormal conditions such as extreme traffic loads or denial-of-service events.

Explicación

Pregunta 11 de 62

1

What is creating a new challenge for IT departments by changing the border of the enterprise network?

Selecciona una de las siguientes respuestas posibles:

energy costs
tablets
access layer switching
company-owned desktops

Explicación

Pregunta 12 de 62

1

Rellena el espacio en blanco para completar el texto.

Under the Cisco Enterprise Edge module, the submodule that provides remote access including authentication and IPS appliances is the and remote access submodule.

Explicación

Pregunta 13 de 62

1

Which product corresponds to a layer of the Cisco Collaboration Architecture?

Selecciona una de las siguientes respuestas posibles:

Cisco Unified Management Solutions
Unified Fabric Solutions
Mobility with Cisco Motion
Network and Computer Infrastructure

Explicación

Pregunta 14 de 62

1

Which approach in networking allows for network changes, upgrades, or the introduction of new services in a controlled and staged fashion?

Selecciona una de las siguientes respuestas posibles:

static
borderless
network module
modular

Explicación

Pregunta 15 de 62

1

Which Cisco technology allows diverse network devices to connect securely, reliably, and seamlessly to enterprise network resources?

Selecciona una de las siguientes respuestas posibles:

service provider edge
building distribution
Cisco AnyConnect
enterprise edge

Explicación

Pregunta 16 de 62

1

In which layer of the hierarchical enterprise LAN design model would PoE for VoIP phones and access points be considered?

Selecciona una de las siguientes respuestas posibles:

data link
physical
distribution
access
core

Explicación

Pregunta 17 de 62

1

Which network architecture combines individual components to provide a comprehensive solution allowing people to cooperate and contribute to the production of something?

Selecciona una de las siguientes respuestas posibles:

Cisco Enterprise Branch Architecture
Cisco Borderless Network Architecture
Cisco Enterprise Campus Architecture
Cisco Collaboration Architecture

Explicación

Pregunta 18 de 62

1

What feature is more important at the core layer than at any other hierarchical network design layer?

Selecciona una de las siguientes respuestas posibles:

aggregation of network links
QoS classification and marking
easy access of end devices
packet switching speed
data security

Explicación

Pregunta 19 de 62

1

What are two of the top trends that affect network architecture design? (Choose two.)

Selecciona una o más de las siguientes respuestas posibles:

BYOD
Internet security
internal security attacks
speed of Internet connectivity
cloud computing

Explicación

Pregunta 20 de 62

1

Which three network architectures have been introduced by Cisco to address the emerging technology challenges created by the evolving business models? (Choose three.)

Selecciona una o más de las siguientes respuestas posibles:

Cisco Borderless
Cisco Collaboration
Cisco Enterprise Campus
Cisco Enterprise Edge
Cisco Data Center
Cisco Enterprise Branch

Explicación

Pregunta 21 de 62

1

What are two structured engineering principles necessary for successful implementation of a network design? (Choose two.)

Selecciona una o más de las siguientes respuestas posibles:

modularity
availability
resiliency
security
quality of service

Explicación

Pregunta 22 de 62

1

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

Selecciona una de las siguientes respuestas posibles:

VPN
ATM
ISDN
municipal Wi-Fi

Explicación

Pregunta 23 de 62

1

Which statement describes cable?

Selecciona una de las siguientes respuestas posibles:

Cable subscribers may expect up to 27 Mbps of bandwidth on the upload path.
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.
Each cable subscriber has dedicated upstream and downstream bandwidth.
The cable subscriber must purchase a cable modem termination system (CMTS).

Explicación

Pregunta 24 de 62

1

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?

Selecciona una de las siguientes respuestas posibles:

802.11
municipal Wi-Fi
WiMAX
DSL

Explicación

Pregunta 25 de 62

1

Which feature is used when connecting to the Internet using DSL?

Selecciona una de las siguientes respuestas posibles:

CMTS
LTE
IEEE 802.16
DSLAM

Explicación

Pregunta 26 de 62

1

Which wireless technology provides Internet access through cellular networks?

Selecciona una de las siguientes respuestas posibles:

municipal Wi-Fi
LTE
WiMAX
satellite

Explicación

Pregunta 27 de 62

1

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?

Selecciona una de las siguientes respuestas posibles:

WiMAX
DSL
cable
VPN

Explicación

Pregunta 28 de 62

1

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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 29 de 62

1

Which statement describes a characteristic of a WAN?

Selecciona una de las siguientes respuestas posibles:

A WAN provides end-user network connectivity to the campus backbone
All serial links are considered WAN connections.
A WAN operates within the same geographic scope of a LAN, but has serial links.
WAN networks are owned by service providers.

Explicación

Pregunta 30 de 62

1

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.)

Selecciona una o más de las siguientes respuestas posibles:

CSU
dialup modem
DSU
access server
Layer 2 switch

Explicación

Pregunta 31 de 62

1

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.)

Selecciona una o más de las siguientes respuestas posibles:

private infrastructure
public infrastructure
Internet
satellite
dedicated

Explicación

Pregunta 32 de 62

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?

Selecciona una de las siguientes respuestas posibles:

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 dialup connection that is supplied by their local telephone service provider

Explicación

Pregunta 33 de 62

1

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

Selecciona una de las siguientes respuestas posibles:

leased lines
ISDN
Frame Relay
ATM

Explicación

Pregunta 34 de 62

1

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?

Selecciona una de las siguientes respuestas posibles:

DWDM
MPLS
ISDN
ATM

Explicación

Pregunta 35 de 62

1

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?

Selecciona una de las siguientes respuestas posibles:

packet-switched network
Ethernet WAN
circuit-switched network
MPLS

Explicación

Pregunta 36 de 62

1

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

Selecciona una de las siguientes respuestas posibles:

ATM
Frame Relay
VSAT
ISDN

Explicación

Pregunta 37 de 62

1

Which equipment is needed for an ISP to provide Internet connections through cable service?

Selecciona una de las siguientes respuestas posibles:

DSLAM
CMTS
access server
CSU/DSU

Explicación

Pregunta 38 de 62

1

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

Selecciona una de las siguientes respuestas posibles:

WiMAX
municipal Wi-Fi
VSAT
Ethernet

Explicación

Pregunta 39 de 62

1

Which network scenario will require the use of a WAN?

Selecciona una de las siguientes respuestas posibles:

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.
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.

Explicación

Pregunta 40 de 62

1

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 41 de 62

1

What is an advantage of packet-switched technology over circuit-switched technology?

Selecciona una de las siguientes respuestas posibles:

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 usually experience lower latency than circuit-switched networks experience.
Packet-switched networks do not require an expensive permanent connection to each endpoint.

Explicación

Pregunta 42 de 62

1

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

Selecciona una o más de las siguientes respuestas posibles:

SONET
SDH
ATM
ANSI
ITU

Explicación

Pregunta 43 de 62

1

What is a requirement of a connectionless packet-switched network?

Selecciona una de las siguientes respuestas posibles:

Each packet has to carry only an identifier.
Full addressing information must be carried in each data packet.
A virtual circuit is created for the duration of the packet delivery.
The network predetermines the route for a packet.

Explicación

Pregunta 44 de 62

1

What PPP information will be displayed if a network engineer issues the show ppp multilink command on Cisco router?

Selecciona una de las siguientes respuestas posibles:

the IP addresses of the link interfaces
the link LCP and NCP status
the queuing type on the link
the serial interfaces participating in the multilink

Explicación

Pregunta 45 de 62

1

In which situation would the use of PAP be preferable to the use of CHAP?

Selecciona una de las siguientes respuestas posibles:

when a network administrator prefers it because of ease of configuration
when plain text passwords are needed to simulate login at the remote host
when multilink PPP is used
when router resources are limited

Explicación

Pregunta 46 de 62

1

Refer to the exhibit. Which statement describes the status of the PPP connection?

Selecciona una de las siguientes respuestas posibles:

Neither the link-establishment phase nor the network-layer phase completed successfully.
Only the link-establishment phase completed successfully.
Both the link-establishment and network-layer phase completed successfully.
Only the network-layer phase completed successfully.

Explicación

Pregunta 47 de 62

1

Which serial 0/0/0 interface state will be shown if no serial cable is attached to the router, but everything else has been correctly configured and turned on?

Selecciona una de las siguientes respuestas posibles:

Serial 0/0/0 is up, line protocol is down
Serial 0/0/0 is up, line protocol is up
Serial 0/0/0 is administratively down, line protocol is down
Serial 0/0/0 is down, line protocol is down
Serial 0/0/0 is up (looped)
Serial 0/0/0 is up (disabled)

Explicación

Pregunta 48 de 62

1

A network engineer is monitoring an essential, but poor quality, PPP WAN link that periodically shuts down. An examination of the interface configurations shows that the ppp quality 90 command has been issued. What action could the engineer take to reduce the frequency with which the link shuts down?

Selecciona una de las siguientes respuestas posibles:

Issue the command ppp quality 70.
Issue the command ppp quality 100.
Set the DCE interface to a lower clock rate.
Use the bandwidth command to increase the bandwidth of the link.

Explicación

Pregunta 49 de 62

1

Which three are types of LCP frames used with PPP? (Choose three.)

Selecciona una o más de las siguientes respuestas posibles:

link-acknowledgment frames
link-establishment frames
link-maintenance frames
link-negotiation frames
link-control frames
link-termination frames

Explicación

Pregunta 50 de 62

1

Which command can be used to view the cable type that is attached to a serial interface?

Selecciona una de las siguientes respuestas posibles:

Router(config)# show ip interface
Router(config)# show ip interface brief
Router(config)# show interfaces
Router(config)# show controllers

Explicación

Pregunta 51 de 62

1

How does PPP interface with different network layer protocols?

Selecciona una de las siguientes respuestas posibles:

by using separate NCPs
by specifying the protocol during link establishment through LCP
by encoding the information field in the PPP frame
by negotiating with the network layer handler

Explicación

Pregunta 52 de 62

1

Which protocol will terminate the PPP link after the exchange of data is complete?

Selecciona una de las siguientes respuestas posibles:

NCP
IPXCP
LCP
IPCP

Explicación

Pregunta 53 de 62

1

Which is an advantage of using PPP on a serial link instead of HDLC?

Selecciona una de las siguientes respuestas posibles:

option for session establishment
option for authentication
fixed-size frames
higher speed transmission

Explicación

Pregunta 54 de 62

1

At which layer of the OSI model does multiplexing take place?

Selecciona una de las siguientes respuestas posibles:

Layer 4
Layer 3
Layer 2
Layer 1

Explicación

Pregunta 55 de 62

1

During a PPP session establishment phase, which two messages are sent by the requested party if the options are not acceptable? (Choose two.)

Selecciona una o más de las siguientes respuestas posibles:

Discard-Request
Code-Reject
Protocol-Reject
Configure-Reject
Configure-Nak

Explicación

Pregunta 56 de 62

1

A network engineer is troubleshooting the loss of MPEG video viewing quality as MPEG video files cross a PPP WAN link. What could be causing this loss of quality?

Selecciona una de las siguientes respuestas posibles:

Link Quality Monitoring was not configured correctly on each interface.
The clock rates configured on each serial interface do not match.
The compress command was used when PPP was configured on the interfaces.
PAP authentication was misconfigured on the link interfaces.

Explicación

Pregunta 57 de 62

1

Which address is used in the Address field of a PPP frame?

Selecciona una de las siguientes respuestas posibles:

a single byte of binary 10101010
a single byte of binary 11111111
the IP address of the serial interface
a single byte of binary 00000000

Explicación

Pregunta 58 de 62

1

Which three physical layer interfaces support PPP? (Choose three.)

Selecciona una o más de las siguientes respuestas posibles:

synchronous serial
Ethernet
GigabitEthernet
asynchronous serial
HSSI
FastEthernet

Explicación

Pregunta 59 de 62

1

Refer to the exhibit. A network administrator is configuring the PPP link between the two routers. However, the PPP link cannot be established. Based on the partial output of the show running-config command, what is the cause of the problem?

Selecciona una de las siguientes respuestas posibles:

The interface IP addresses are in different subnets.
The usernames do not match.
The passwords do not match.
The passwords should be longer than 8 characters.

Explicación

Pregunta 60 de 62

1

Refer to the exhibit. Based on the debug command output that is shown, which statement is true of the operation of PPP.

Selecciona una de las siguientes respuestas posibles:

Both PAP and CHAP authentication were attempted.
CHAP authentication failed because of an unknown hostname.
A PPP session was successfully established.
The debug output is from router R2.

Explicación

Pregunta 61 de 62

1

Which three statements are true about PPP? (Choose three.)

Selecciona una o más de las siguientes respuestas posibles:

PPP uses LCPs to agree on format options such as authentication, compression, and error detection.
PPP can use synchronous and asynchronous circuits.
PPP can only be used between two Cisco devices.
PPP uses LCPs to establish, configure, and test the data link connection.
PPP carries packets from several network layer protocols in LCPs.

Explicación

Pregunta 62 de 62

1

Refer to the exhibit. What type of Layer 2 encapsulation will be used for connection D on the basis of this configuration on a newly installed router:

RtrA(config)# interface serial0/0/0
RtrA(config-if)# ip address 128.107.0.2 255.255.255.252
RtrA(config-if)# no shutdown

Selecciona una de las siguientes respuestas posibles:

PPP
Ethernet
Frame Relay
HDLC

	Creado por Anthony Schulmeister hace alrededor de 8 años