Cisco CCDA 640-863 考古題免費分享

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640-863 Exam 全稱Designing for Cisco Internetwork Solutions ，屬於Cisco CCDA認證考試

1. A Cisco security mechanism has the following attributes:
It is a sensor appliance
It searches for potential attacks by capturing and analyzing traffic
It is a “purpose-built device”
It is installed passively
It introduces no delay or overhead Which Cisco security mechanism is this?
A. IKE
B. PIX
C. HIPS
D. NIDS
E. HMAC
Answer: D
2. You design a network with the following network addresses:
192.168.168.0
192.168.169.0
192.168.170.0
192.168.171.0
192.168.172.0
192.168.173.0
192.168.173.0
192.168.174.0
192.168.175.0
Which route address is the best summary of these network addresses?
A. 192.128.0.0/24
B. 192.128.171.128/3
C. 192.128.168.0/21
D. 192.128.175.0/3
E. 192.128.0.0/16
Answer: C
3. Which two statements about IPv6 addresses are true? (Choose two.)
A. Leading zeros are required.
B. Two colons (::) are used to represent successive hexadecimal fields of zeros.
C. Two colons (::) are used to separate fields.
D. A single interface will have multiple IPv6 addresses of different types.
Answer: BD
4. Which Cisco security solution can quarantine and prevent non-compliant end stations from accessing
the network until they achieve security policy compliance?
A. Cisco Secure Connectivity
B. Adaptive Security Appliance
C. Access Control Server
D. Network Admission Control
E. Network Intrusion Prevention System
F. Cisco Security Monitoring, Analysis, and Response System
Answer: D
5. A manufacturing company has decided to add a website to enhance sales. The web servers in the
E-Commerce module must be accessible without compromising network security. Which two design
recommendations can be made to meet these requirements? (Choose two.)
A. Use private and public key encryption.
B. Move the E-Commerce servers to the WAN module.
C. Use intrusion detection on the E-Commerce server farm.
D. Limit the number of incoming connections to the E-Commerce module.
E. Place E-Commerce servers and application servers on isolated LANs (DMZs).
Answer: CE

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5. Which two statements regarding the Wireless LAN Solution Engine (WLSE) are true? (Choose two.)
Select 2 response(s).
A. To support fault and policy reporting, the WLSE requires a Wireless Control System (WCS).
B. When WLSE detects an AP failure, it automatically increases the power and cell coverage of nearby
APs.
C. WLSE requires the 2700 location appliance to offer location tracking.
D. WLSE can locate rogue APs and automatically shut them down.
E. WLSE configuration is done using the command line interface (CLI) or a WEB based template.
Answer: BD
6. Which two statements are true about the function of CAC? (Choose two.)
Select 2 response(s).
A. CAC provides guaranteed voice quality on a link.
B. CAC artificially limits the number of concurrent voice calls.
C. CAC is used to control the amount of bandwidth that is taken by a call on a link.
D. CAC prevents oversubscription of WAN resources that is caused by too much voice traffic.
E. CAC allows an unlimited number of voice calls while severely restricting, if necessary, other forms of
traffic.
F. CAC solves voice congestion problems by using QoS to give priority to UDP traffic.
Answer: BD
7. Which two statements are true about the implementation of QoS? (Choose two.)
Select 2 response(s).
A. Implementing DiffServ involves the configuration of RSVP.
B. Implementing IntServ allows QoS to be performed by configuring only the ingress and egress devices.
C. Implementing IntServ involves the utilization of RSVP.
D. Traffic should be classified and marked by the core network devices.
E. Traffic should be classified and marked as close to the edge of the network as possible.
Answer: CE
8. Which codec standard would provide the highest voice-quality, mean opinion score (MOS)?
Select the best response.
A. G.711, PCM
B. G.728, LDCELP
C. G.729, CS-ACELP
D. G.729A, CS-ACELP
Answer: A

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