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WAN Technologies CH 1-3 Exam

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WAN Technologies CH 1-3 Exam
Anthony Schulmeister
Quiz by Anthony Schulmeister, updated more than 1 year ago
Anthony Schulmeister
Created by Anthony Schulmeister about 8 years ago
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Question 1

Question
Refer to the exhibit. Which type of ISP connectivity to the service provider edge is being used by company A?
Image:
249c0b59-0cac-4fc1-af51-e636a8afd646 (image/jpeg)
Answer
  • multihomed
  • dual-multihomed
  • dual-homed
  • single-homed

Question 2

Question
Refer to the exhibit. Which Cisco Enterprise Architecture module is shown?
Image:
cec7d782-5cef-4a82-b9a8-dbd88e1150ba (image/png)
Answer
  • remote
  • campus infrastructure
  • service provider edge
  • enterprise campus
  • enterprise edge

Question 3

Question
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?
Answer
  • data center
  • services
  • enterprise edge
  • access-distribution

Question 4

Question
Which network architecture functions through a combination of technologies that include wired, wireless, security, and more?
Answer
  • Cisco Borderless
  • Cisco Enterprise Edge
  • Cisco Enterprise Branch
  • Cisco Enterprise Campus

Question 5

Question
Which network module is the fundamental component of a campus design?
Answer
  • services module
  • enterprise edge
  • data center
  • access-distribution module

Question 6

Question
What is one advantage to designing networks in building block fashion for large companies?
Answer
  • increased network access time
  • failure isolation
  • redundancy
  • mobility

Question 7

Question
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?
Answer
  • access-distribution
  • data center
  • services
  • enterprise edge

Question 8

Question
Refer to the exhibit. Which type of Cisco hierarchical LAN design model is used at school site 1?
Image:
1e951dfd-f3b0-4df6-a6de-1569943d767c (image/png)
Answer
  • three-tier
  • 7 layer
  • two-tier collapsed core
  • 3 layer

Question 9

Question
Which layer of the Cisco Collaboration Architecture contains unified communications and conference software such as Cisco WebEx Meetings, WebEx Social, Cisco Jabber, and TelePresence?
Answer
  • applications and devices
  • services module
  • enterprise WAN
  • service provider edge

Question 10

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

Question 11

Question
What is creating a new challenge for IT departments by changing the border of the enterprise network?
Answer
  • energy costs
  • tablets
  • access layer switching
  • company-owned desktops

Question 12

Question
Under the Cisco Enterprise Edge module, the submodule that provides remote access including authentication and IPS appliances is the [blank_start]VPN[blank_end] and remote access submodule.
Answer
  • VPN

Question 13

Question
Which product corresponds to a layer of the Cisco Collaboration Architecture?
Answer
  • Cisco Unified Management Solutions
  • Unified Fabric Solutions
  • Mobility with Cisco Motion
  • Network and Computer Infrastructure

Question 14

Question
Which approach in networking allows for network changes, upgrades, or the introduction of new services in a controlled and staged fashion?
Answer
  • static
  • borderless
  • network module
  • modular

Question 15

Question
Which Cisco technology allows diverse network devices to connect securely, reliably, and seamlessly to enterprise network resources?
Answer
  • service provider edge
  • building distribution
  • Cisco AnyConnect
  • enterprise edge

Question 16

Question
In which layer of the hierarchical enterprise LAN design model would PoE for VoIP phones and access points be considered?
Answer
  • data link
  • physical
  • distribution
  • access
  • core

Question 17

Question
Which network architecture combines individual components to provide a comprehensive solution allowing people to cooperate and contribute to the production of something?
Answer
  • Cisco Enterprise Branch Architecture
  • Cisco Borderless Network Architecture
  • Cisco Enterprise Campus Architecture
  • Cisco Collaboration Architecture

Question 18

Question
What feature is more important at the core layer than at any other hierarchical network design layer?
Answer
  • aggregation of network links
  • QoS classification and marking
  • easy access of end devices
  • packet switching speed
  • data security

Question 19

Question
What are two of the top trends that affect network architecture design? (Choose two.)
Answer
  • BYOD
  • Internet security
  • internal security attacks
  • speed of Internet connectivity
  • cloud computing

Question 20

Question
Which three network architectures have been introduced by Cisco to address the emerging technology challenges created by the evolving business models? (Choose three.)
Answer
  • Cisco Borderless
  • Cisco Collaboration
  • Cisco Enterprise Campus
  • Cisco Enterprise Edge
  • Cisco Data Center
  • Cisco Enterprise Branch

Question 21

Question
What are two structured engineering principles necessary for successful implementation of a network design? (Choose two.)
Answer
  • modularity
  • availability
  • resiliency
  • security
  • quality of service

Question 22

Question
What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?
Answer
  • VPN
  • ATM
  • ISDN
  • municipal Wi-Fi

Question 23

Question
Which statement describes cable?
Answer
  • 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).

Question 24

Question
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?
Answer
  • 802.11
  • municipal Wi-Fi
  • WiMAX
  • DSL

Question 25

Question
Which feature is used when connecting to the Internet using DSL?
Answer
  • CMTS
  • LTE
  • IEEE 802.16
  • DSLAM

Question 26

Question
Which wireless technology provides Internet access through cellular networks?
Answer
  • municipal Wi-Fi
  • LTE
  • WiMAX
  • satellite

Question 27

Question
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?
Answer
  • WiMAX
  • DSL
  • cable
  • VPN

Question 28

Question
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?
Answer
  • higher data transmission rate
  • lower cost
  • data security and confidentiality during transmission
  • website and file exchange service support

Question 29

Question
Which statement describes a characteristic of a WAN?
Answer
  • 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.

Question 30

Question
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.)
Answer
  • CSU
  • dialup modem
  • DSU
  • access server
  • Layer 2 switch

Question 31

Question
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.)
Answer
  • private infrastructure
  • public infrastructure
  • Internet
  • satellite
  • dedicated

Question 32

Question
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?
Answer
  • 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

Question 33

Question
Which WAN technology establishes a dedicated constant point-to-point connection between two sites?
Answer
  • leased lines
  • ISDN
  • Frame Relay
  • ATM

Question 34

Question
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?
Answer
  • DWDM
  • MPLS
  • ISDN
  • ATM

Question 35

Question
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?
Answer
  • packet-switched network
  • Ethernet WAN
  • circuit-switched network
  • MPLS

Question 36

Question
Which WAN technology is cell-based and well suited to carry voice and video traffic?
Answer
  • ATM
  • Frame Relay
  • VSAT
  • ISDN

Question 37

Question
Which equipment is needed for an ISP to provide Internet connections through cable service?
Answer
  • DSLAM
  • CMTS
  • access server
  • CSU/DSU

Question 38

Question
Which solution can provide Internet access to remote locations where no regular WAN services are available?
Answer
  • WiMAX
  • municipal Wi-Fi
  • VSAT
  • Ethernet

Question 39

Question
Which network scenario will require the use of a WAN?
Answer
  • 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.

Question 40

Question
Which geographic scope requirement would be considered a distributed WAN scope?
Answer
  • one-to-one
  • local
  • many-to-many
  • regional
  • global
  • one-to-many

Question 41

Question
What is an advantage of packet-switched technology over circuit-switched technology?
Answer
  • 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.

Question 42

Question
What are two common high-bandwidth fiber-optic media standards? (Choose two.)
Answer
  • SONET
  • SDH
  • ATM
  • ANSI
  • ITU

Question 43

Question
What is a requirement of a connectionless packet-switched network?
Answer
  • 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.

Question 44

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

Question 45

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

Question 46

Question
Refer to the exhibit. Which statement describes the status of the PPP connection?
Image:
4e7d90f6-8d2e-45d5-8c9b-3f2e71700e8a (image/jpeg)
Answer
  • 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.

Question 47

Question
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?
Answer
  • 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)

Question 48

Question
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?
Answer
  • 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.

Question 49

Question
Which three are types of LCP frames used with PPP? (Choose three.)
Answer
  • link-acknowledgment frames
  • link-establishment frames
  • link-maintenance frames
  • link-negotiation frames
  • link-control frames
  • link-termination frames

Question 50

Question
Which command can be used to view the cable type that is attached to a serial interface?
Answer
  • Router(config)# show ip interface
  • Router(config)# show ip interface brief
  • Router(config)# show interfaces
  • Router(config)# show controllers

Question 51

Question
How does PPP interface with different network layer protocols?
Answer
  • 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

Question 52

Question
Which protocol will terminate the PPP link after the exchange of data is complete?
Answer
  • NCP
  • IPXCP
  • LCP
  • IPCP

Question 53

Question
Which is an advantage of using PPP on a serial link instead of HDLC?
Answer
  • option for session establishment
  • option for authentication
  • fixed-size frames
  • higher speed transmission

Question 54

Question
At which layer of the OSI model does multiplexing take place?
Answer
  • Layer 4
  • Layer 3
  • Layer 2
  • Layer 1

Question 55

Question
During a PPP session establishment phase, which two messages are sent by the requested party if the options are not acceptable? (Choose two.)
Answer
  • Discard-Request
  • Code-Reject
  • Protocol-Reject
  • Configure-Reject
  • Configure-Nak

Question 56

Question
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?
Answer
  • 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.

Question 57

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

Question 58

Question
Which three physical layer interfaces support PPP? (Choose three.)
Answer
  • synchronous serial
  • Ethernet
  • GigabitEthernet
  • asynchronous serial
  • HSSI
  • FastEthernet

Question 59

Question
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?
Image:
a721f917-5d6b-40ec-a157-748f4403c0e5 (image/png)
Answer
  • 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.

Question 60

Question
Refer to the exhibit. Based on the debug command output that is shown, which statement is true of the operation of PPP.
Image:
f15e302d-fdb0-4894-848d-1c6835daa840 (image/png)
Answer
  • 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.

Question 61

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

Question 62

Question
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
Image:
903c0c1b-17bb-48a7-b86f-32e805b4bdfc (image/png)
Answer
  • PPP
  • Ethernet
  • Frame Relay
  • HDLC
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