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思科认证Cisco 642-061题库

日期:2015/8/24 21:34:50 来源:本站原创 访问量:
1. Which two types of mechanisms can be used to provide load balancing across parallel links in a redundant
campus network? (Choose two.)
A. QoS
B. HSRP
C. VRRP
D. 802.1Q
E. EtherChannel link aggregation
F. Cisco Express Forwarding load balancing
Answer: EF 
2. Refer to the exhibit.  
Which network is characterized by the output from the show cdp neighbors command?
A. Network 1
B. Network 2
C. Network 3
D. Network 4
Answer: A 
3. You have been given a contract to redesign a customer's network in order to provide support for emerging
technologies like VoIP and video services. In order to more effectively identify this customer's needs, you would
TestInside    642-061 like to analyze the traffic in its existing network. Which two tools in Cisco IOS can you use to perform this
analysis? (Choose two.)
A. RMON probes
B. NBAR
C. access control lists
D. NetFlow
E. embedded device manager
Answer: BD 
4. You have been given a contract to consolidate the Cisco Catalysts 6500 services available at the headquarters
office of Acme Enterprises. The Acme Enterprises management team wants to deploy application infrastructure
control, security, and simplicity in design. Which Cisco Catalyst service module should you recommend?
A. IDS module
B. Content Services Module with SSL
C. Network Analysis Module
D. Anomaly Guard Module
E. ACE module
Answer: E 
5. Which supervisor module can be used in the Cisco Catalyst 4510R chassis?
A. Supervisor II-Plus
B. Supervisor IV
C. Supervisor V-10GE
D. Supervisor II-TS
Answer: C 
6. The servers belonging to your customer were recently infected with the Blaster virus. Which Cisco product will
help prevent this kind of virus propagation?
A. CSA
B. PIX
C. CUE
TestInside    642-061
D. CME
Answer: A 
7. What are the two main benefits of using VSANs as opposed to zoning? (Choose two.)
A. increased capacity
B. increased availability
C. increased performance
D. increased geographical reach
E. increased manageability and scalability
Answer: BE 
8. What queue-scheduling algorithm does the Optical Services Module PXF use to provide QoS features?
A. FIFO
B. Modified Deficit
C. Weighted Round Robin
D. Versatile Traffic Management Services
Answer: D 
9. Which three of these are features of the Cisco Catalyst 4900 Series Switches? (Choose three.)
A. one RU
B. stackable
C. fixed configuration
D. Power over Ethernet
E. redundant power supplies
F. Layer 2 through Layer 7 switching capabilities
Answer: ACE 
10. Which Cisco Catalyst 6500 Series Switch supervisor module should you select in order to allow service
providers to deploy MPLS and achieve high throughput?
A. Supervisor 32
B. Supervisor 720
TestInside    642-061
C. Supervisor 1A
D. Supervisor 2
Answer: B 
11. Your client is adding a new R&D facility to its existing, three-building corporate campus. The new building
will be four stories high and house from 150 to 400 employees. The client would like to deploy IP
communications to this building and connect it to the existing campus TDM phone system. The new building will
use collaborative workspaces for each team, and it will require that each team member have the flexibility to
move among work areas yet remain connected to the network and receive phone calls. Which four technologies
will be applicable here? (Choose four.)
A. wireless
B. switching
C. security
D. storage
E. PoE
F. AONS
Answer: ABCE 
12. In the Cisco Catalyst 6500-E Series chassis, what are three key chassis specifications? (Choose three.)
A. requires Cisco IOS 12.2(1)SXD and beyond
B. three-slot chassis supports CEF720 line cards
C. is backward-compatible with all existing software versions
D. six- and nine-slot chassis support only 6000-W power supplies
E. supports all existing supervisors, line cards, switch fabrics, and software releases
Answer: BCE 
13. Your network includes a Cisco Catalyst 6500 Switch with an FWSM module. You need Layer 2 connectivity
between two routers located on different firewall interfaces. Which feature will you need in order to provide this
connectivity?
A. router mode
B. virtual firewall
TestInside    642-061
C. stateful firewall
D. transparent mode
E. two FWSM modules in failover mode
Answer: D 
14. Which layer in a hierarchical network is considered optional in smaller campus networks?
A. access
B. distribution
C. core
D. remote
E. DMZ
F. aggregation
Answer: C 
15. Refer to the exhibit. The network is running the EIGRP routing protocol. Distribution router 1 loses the link to
the corporate network. How should the remote spoke router be configured to prevent it from being the
next-lowest-cost path to network 10.3.1.0? 
A. Disable split horizon.
B. Configure it as an EIGRP stub router.
C. Enable route filtering.
D. Configure a floating static route to network 10.3.1.0.
Answer: B 
16. In a Cisco Catalyst 6509 Switch, in which slots can the Sup2 card be installed?
TestInside    642-061
A. any slot
B. slots 1 and 2
C. slots 3 and 4
D. slots 5 and 6
E. slots 1 through 9
Answer: D 
17. Refer to the exhibit. Given the network topology, what function is OSPF Router E performing? 
A. internal router
B. area border router
C. stub router
TestInside    642-061
D. autonomous system border router
Answer: D 
18. Which three of the following characteristics are network fundamentals that provide WAN and LAN
connectivity in the Integrated Services layer of the branch office design model? (Choose three.)
A. scalability
B. performance
C. management
D. high availability
E. quality of service
F. IP addressing and routing
Answer: DEF 
19. Which is a reliable network auditing methodology for discovering applications on the network and their usage
characteristics?
A. Interview system administrators regarding the networked applications.
B. Conduct a network usage study over a given period of time.
C. Place a sniffer device on the network to grasp a snapshot of traffic on the network.
D. Conduct a network inventory of servers and applications installed on them.
Answer: B 
20. You have a customer that is looking to mitigate DDOS attacks. Which two of the following Cisco security
products would you recommend to meet this need? (Choose two.)
A. Cisco IPS
B. Cisco ASA
C. Cisco IOS Firewall
D. Cisco Anomaly Guard Module
E. Cisco Firewall Services Module
F. Cisco Traffic Anomaly Detector Module
Answer: BD 
TestInside    642-061 21. Which capability of EIGRP allows a failing router to retain the routing information of an EIGRP peer until the
failed router has returned to normal operating behavior?
A. NSF awareness
B. DUAL
C. feasible successor
D. AD
Answer: A 
22. You have received an RFP from a potential client to design a network for a new corporate campus. This
campus will encompass administration, sales, and R&D, and it will pull all the distributed IT functions into a new
data center. The campus will consist of five buildings, each with four floors. The buildings will be linked via
high-strand-count, single-mode fiber-optic cable to the new data center in building 3. Each building will have an
MDF with at least one telco closet per floor and at least two runs of Category 5 UTP cable will go to each work
location. Multistrand multimode will connect each telco closet to the MDF. Each MDF will have dedicated power
circuits and be backed up by batteries in the basement of each building and a generator. 
The corporation will require 3500 TDM telephones and approximately 100 of these will be in a call center in
building 2. The corporation needs to increase collaboration in the workforce. Employees need the flexibility to be
able to move from one floor to another or from one building to another to accomplish their jobs. Managers also
need this flexibility without losing connectivity to the corporate network or their phones. 
Building 4 will house R&D. This portion of the network requires connectivity to the Internet, but it also must
restrict which employees have access to certain parts of the R&D network. 
The data center will house all connections to the Internet and to the PSTN. The corporation also provides access to
customers for customized applications support. A network operations center will monitor and maintain the
network on a 365/24/7 basis. Which advanced technologies will be applicable to answering this RFP? (Choose
three.)
A. security
B. IP communications
C. storage
TestInside    642-061
D. data center
E. routing and switching
Answer: ACD 
23. Refer to the exhibit. Given that the network is running OSPF routing protocol over the WAN, which type of
OSPF routing is being used on the router labeled "Mollie"? 
A. point to point
B. virtual link
C. point to multipoint
D. route redistribution
Answer: C 
24. What are the three most common transport network options for connecting a branch office network to the
campus core? (Choose three.)
A. LAN
B. PSTN
C. Internet
D. radio links
E. MPLS VPN
F. Private WAN
Answer: CEF 
25. Which security feature of a Cisco Catalyst 2960 Series Switch can be used to prevent clients from acquiring an
IP address from unauthorized servers?
TestInside    642-061
A. port security
B. 802.1X in conjunction with Cisco Secure ACS
C. DHCP snooping
D. MAC address notification
Answer: C 
26. Which two of these protocols can be used to provide secure connectivity when connecting a branch office to
the campus core? (Choose two.)
A. GRE
B. L2TP
C. IPsec
D. IP in IP
E. L2TP over IPsec
Answer: CE 
27. Your retail customer has 330 branch locations that it wishes to connect via Frame Relay. At the headquarters
location there will be two DS-3 Frame Relay circuits, each connected to an ISR 3845 router. Each branch location
will have a fractional T1 with a 128-kbps CIR and a PVC mapped to each of the DS-3 circuits. Which two
considerations must be addressed for this design? (Choose two.)
A. The MTU for the Frame Relay circuits should be set to 4470 to allow the LMI message to include all 330
DLCIs.
B. Additional routers and circuits should be installed at headquarters so that no more than 200 branch locations are
mapped to each ISR due to IDB limitations.
C. The customer should not run OSPF. Since all branches are connected to the same circuit at headquarters they
must be in the same OSPF area, and the number of branches exceeds the design recommendations for routers in an
OSPF area.
D. Frame Relay traffic shaping should be implemented to prevent congestion in the Frame Relay switch.
E. The CIRs should be reduced so the DS-3 circuits are not oversubscribed.
Answer: AD 
28. Refer to the exhibit. What are three key benefits of implementing this branch solution using the components
TestInside    642-061
listed? (Choose three.) 
A. supports standard 802.3af PoE
B. provides feature parity with the Cisco Catalyst 3750 Series of switches
C. provides integrated configuration of both routing and switching functions under a single Cisco IOS instance.
D. switch ports can be stacked with external Catalyst Series switches using Cisco StackWise technology
E. maximizes concurrent routing and switching performance by using local processors and switching engines
Answer: ABE 
29. In the Cisco Catalyst 6513 Switch, which slots support the Supervisor Engine 720 and Supervisor Engine 32?
A. any slot
B. slots 1 and 2
C. slots 5 and 6
D. slots 7 and 8
E. slots 12 and 13
Answer: D 
30. Refer to the exhibit. Which would be a benefit of designing the OSPF network as shown? 
TestInside    642-061 A. Routes can be redistributed within the individual areas.
B. The backbone area does not need any internal routers.
C. Route summarization is enabled by default in this type of configuration.
D. Route summarization configuration at the ABRs is greatly simplified.
Answer: D 
31. What does the Cisco Unified Communications solution use to protect against unauthorized telephones joining
the IP telephony network?
A. SRTP
B. call encryption
C. intrusion prevention
D. phone authentication
E. application-layer inspection
Answer: D 
32. A small business wants to deploy IP telephony across its enterprise but lacks the expertise and staffing to plan
and deploy the service. Its concerns include cost, ensuring voice quality, and time to deployment. Given only these
requirements, what is the appropriate option to recommend?
A. Provision the network using AutoQoS VoIP.
B. Configure NBAR for stateful packet inspection.
C. Use CBWFQ.
D. Configure each router to mark VoIP packets as CoS 5.
Answer: A 
33. Which of these is a deployment focus of the Cisco Catalyst 4900 Series Switches?
A. network core
B. limited-space server rack
C. high-density wiring closet
D. medium to large branch offices
Answer: B 
TestInside    642-061 34. Which two of these layers are both part of the SONA Framework? (Choose two.)
A. Unified Messaging layer
B. Distribution layer
C. Interactive Services layer
D. Core layer
E. Network Infrastructure layer
F. Services Architecture layer
Answer: CE 
35. Which WAN type provides the most secure transport?
A. Frame Relay
B. Private WAN
C. Internet with SLA
D. IPsec over MPLS VPN
E. dial-up connection over a circuit-switched network
Answer: D 
36. Which two of these tasks are important when designing for high availability? (Choose two.)
A. selecting high-end devices
B. identifying single points of failures
C. improving performance to consequently increase availability
D. introducing redundancy to mitigate potential single points of failure
E. removing devices and features that introduce single points of failures
Answer: BD 
37. Which of these spanning tree mechanisms can be used to ensure that access switches cannot become transit
nodes in a spanning tree?
A. PortFast
B. UplinkFast
C. loop guard
D. root guard
TestInside    642-061
E. BPDU guard
F. BPDU filter
Answer: D 
38. What are three important characteristics of the Cisco Catalyst 2960G-24TC switch? (Choose three.)
A. Each Ethernet 10/100/1000 port supports up to six priority queues each with two drop thresholds.
B. does not support 802.3af PoE
C. uses the GBIC/SFP form factor for dual-purpose ports
D. provides a maximum forwarding bandwidth of 32 Gbps
E. contains 24 Ethernet 10/100/1000 ports and 2 dual-purpose slot
Answer: BCD 
39. You are required to upgrade the network of a multistory branch office building to support Cisco 7970 IP
Phones throughout. Given that each phone uses 15.4 W, how many phones can a Cisco Catalyst 3750 support
using Cisco Intelligent Power Management in a 48-port PoE configuration?
A. 8
B. 16
C. 24
D. 32
E. 48
Answer: C 
40. The PVDM slots on the motherboard of the Cisco 2800 and 3800 ISR are used for what purpose?
A. to support built-in VPN acceleration providing high-performance Crypto offload
B. to support the high-performance AIM modules
C. to support the onboard TDM switch
D. to support the integrated DSPs for voice termination, conferencing and transcoding
E. to support the EVM
Answer: D 
41. Which two of these branch office network infrastructure designs include high availability? (Choose two.)
TestInside    642-061
A. single-homed
B. single-tier branch profile
C. dual-tier branch profile
D. multi-tier branch profile
E. multi-homed design with a single-tier branch profile
Answer: CD 
42. You have a client that currently has a single connection to an ISP. Your client is growing rapidly and would
like to provide more capacity to the Internet without losing the ability to support high availability. Which
methodology will support dual-homed connections to the same ISP and also support high availability?
A. VRRP
B. HSRP
C. RPR+
D. GLBP
Answer: D 
43. A client organization is investigating deploying IP communications. It has a traditional hub-and-spoke Frame
Relay WAN. It has five remote sites, and the WAN link speed for each location is 512 kbps. The WAN supports
typical IP-based applications, but the client will also be rolling out a new ERP application that will be considered
mission critical. Which three QoS mechanisms will be useful in redesigning the WAN to support the
mission-critical application and IP communications? (Choose three.)
A. LFI
B. CBWFQ
C. 5 to 11 class model
D. LLQ
E. cRTP
F. WFQ
Answer: ADE 
44. Which two tools can you use to manage and configure a Cisco Catalyst Express 500 Series Switch? (Choose
two.)
TestInside    642-061
A. CLI
B. Cisco Network Assistant
C. Cisco Smartports Advisor
D. Device Manager with embedded GUI
Answer: BD 
45. Your customer wishes to eliminate the expense of distributing training videotapes to each location but is
worried about bandwidth consumption affecting critical business applications. Which network module can be
added to ISRs to allow the customer to distribute the videos over the WAN with minimal impact on bandwidth?
A. NM-CUE-EC
B. NM-16ESW-1GIG
C. NM-HDV
D. NM-CE-BP-40G
Answer: D 
46. Refer to the exhibit. Based on this network diagram and output from a show cdp neighbors Cisco IOS
command, on which network device is the command being executed? 
A. BBSW2
B. DSW11
C. ASW11
TestInside    642-061
D. ASW12
Answer: B 
47. Which of these features makes a Cisco 7300 Series Router the preferred choice when hardware-accelerated IP
processing is required?
A. Parallel Express Forwarding (PXF)
B. high-speed switching bus
C. NPE-G2 network processing engine
D. optimized port adapter-to-port adapter traffic flow
Answer: A 
48. In a Cisco Catalyst 6500-E Series chassis, why is a special type of fan used?
A. Nonredundant power mode generates less heat, and consequently a slower fan speed can be used.
B. It provides additional cooling, which is required by new line cards that generate more heat due to increased
power consumption.
C. A dual-speed fan is required to support the redundant and nonredundant power-mode features of the Catalyst
6500-E Series.
D. A larger fan is required to provide increased airflow because the Catalyst 6500-E Series has a smaller form
factor; there isn't more heat, there is less room.
Answer: B 
49. Refer to the exhibit. Your client has merged with another company and has decided to deploy an MPLS VPN
to connect that company with its network. Which situation will be the result of implementing an MPLS VPN
network? 
A. The P and PE routers will share a common IGP.
B. The PE routers will have been configured to run MPLS with the CE routers.
TestInside    642-061 C. The PE routers will install the routes learned from the P routers in the appropriate VRF.
D. The PE routers will not install the backbone IGP routes in the global routing table, but rather in the MPLS
backbone VRF.
E. The MPLS backbone, the P routers, will require BGP to be implemented to be able to label-switch packets from
PE1 to PE2.
Answer: A 
50. Your customer is relocating its data center to a new building. The new data center is two miles from the
existing data center. The customer's scheduled maintenance window is too short to accommodate a flash cut, so it
plans on relocating 25 percent of the servers on separate weekends. The customer does not wish to change the IP
addresses of the servers and is trying to find a way to bridge its subnets between the two data centers during the
migration period. Which Cisco product may be able to accomplish this?
A. SFS 3000
B. Aironet 1120
C. Aironet 1400
D. Cisco IP Transfer Point
Answer: C
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