默认题库 - CCDP(642-873)

单选题

What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones?（）

A. 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.
B. 79xx IP phones do not mark protocol packets such as DHCP, DNS, or TFTP with non-zero DSCP values.
C. 79xx IP phones do not mark voice packets with optimal DSCP values.
D. 79xx IP phones use a custom protocol to communicate CDP information to the switch.

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单选题

When is the site-to-site remote access model appropriate? （）

A. for multiple ISDN connections
B. for modem concentrated dial-up connections
C. for a group of users in the same vicinity sharing a connection
D. for use by mobile user

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多选题

Which two statements about an interface configured with the asr-group command are correct?（）

A. The FWSM supports up to 16 asymmetric routing groups.
B. If a matching packet is not found, the packet is dropped.
C. Asymetric routing of return traffic is enabled.
D. If a matching packet is found, the Layer 3 header is rewritten.
E. If a matching packet is found, the Layer 3 header is rewritten and the packet is forwarded to the default gateway.

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单选题

Users at the Charleville Company began experiencing high network delays when Internet connectivity was enabled for all users. After investigating the traffic flow, you determine that peerto-peer traffic from a music download site is consuming a large amount of bandwidth. Which QoS mechanism can you implement to improve the network response time?（）

A. Use CBWFQ to queue the peer-to-peer traffic into the default traffic class.
B. Use class-based WRED to randomly drop the peer-to-peer traffic during network congestions.
C. Use class-based policing to limit the peer-to-peer traffic rate.
D. Use class-based shaping to delay any excessive peer-to-peer traffic.

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单选题

As an experienced technician, you are responsible for Technical Support. Which of the following descriptions is correct about the characteristic of SLB one arm mode?（）

A. This out-of-band approach supports scaling
B. SLB is not inline.
C. Mode is not as common as bridge or routed mode.
D. Return traffic requires PBR, server default gateway pointing to SLB, or client source NA

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单选题

Which technology allows centralized storage services to be shared across different VSANs?（）

A. IVR
B. FSPF
C. FICON
D. SANTa

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多选题

Which two of these are advantages of placing the VPN device parallel to the firewall?（）

A. high scalability
B. the design supports a layered security model
C. firewall addressing does not need to change
D. IPsec decrypted traffic is inspected by the firewall
E. there is a centralized point for logging and content inspectio

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单选题

What is the recommended radius of a cell for a voice-ready wireless network?（）

A. 86dBm
B. 67dBm
C. 19dBm
D. 95dBm

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多选题

Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?（）

A. optical technology for transmitting up to 32 channels over multiple fiber strands
B. optical technology for transmitting up to 16 channels over multiple fiber strands
C. a WDM system that is compatible with EDFA technology
D. a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWD

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单选题

Please match the Cisco NAC appliance component to its description.（） (1)Cisco NAS (2)Cisco NAA (3)Rule-set Lpdates (4)Cisco NAM (a) a centralized management point (b) an in-band cr out-of-band device for network access control (c) a Windows-based client which allows network access based on the tasks running (d) a status crecker for operating systems,antivirus,antispyware,etc.

A. （a）-（4）；（b）-（1）；（c）-（2）；（d）-（3）
B. （a）-（3）；（b）-（2）；（c）-（4）；（d）-（1）
C. （a）-（4）；（b）-（3）；（c）-（1）；（d）-（2）
D. （a）-（2）；（b）-（4）；（c）-（3）；（d）-（1）

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