多项选择题What are disadvantages of Network Address Translation Transparency?()

A.There is no disadvantage.
B.It will add 16 bytes per packet of overhead(8 bytes UDP header, and 8 bytes of NON-IKE Marker).
C.It will add 36 bytes per packet of overhead (20 bytes of IP header, 8 bytes of UDP header, 8 bytes of NON-IKE Marker).
D.It will require that both crypto peers support this feature in the IOS version. Both crypto peers must also have this feature enabled.


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1.单项选择题Which is not a reason that Internet Service Providers prefer to use PPP over Ethernet (PPoE)?()

A.access control and billing can be done on a per-user, rather than a per-site basis
B.supports Link Fragmentation and Interleaving 
C.provides the ability to connect a network of hosts over a simple bridging access device
D.provides a consistent means of authenticating users (RADIUS for example)

2.多项选择题When is it appropriate to enable Link Fragmentation and Interleaving (LFI) on DSL connections for Teleworkers?()

A.uplink speed less than 768kbps
B.supporting Voice-over-IP
C.using PPPoE encapsulation
D.using PPPoA encapsulation
E.uplink speed greater than 768kbps

3.单项选择题A customer indicates they run a mission-critical application which marks its packets best-effort (DSCP=0). How can you guarantee delivery of this traffic?()

A.Remark the traffic on ingress and prioritize on egress.
B.Enable CEF and Netflow. 
C.Configure the MS-Windows QoS Scheduler to prioritize this traffic.
D.Enable WRED.

4.单项选择题

Refer to the exhibit. With an IPSec tunnel established between remote Router A and head-end router B, with Compressed Real-Time Protocol (cRTP) configured on the serial interface of Router A, what impact will the cRTP configuration have on the Voice over IP packets flowing through the IPSec tunnel from a Cisco 7960 IP phone?()

A.Twenty bytes of header will be replaced with five bytes. 
B.If the IPSec transform set includes Authentication Header, the receiving IPSec peer will discard the packets. 
C.The IPSec packets will be dropped by Router A's compression logic.
D.The voice packets will not be compressed.

5.多项选择题What are the DSL-specific factors that require additional bandwidth when supporting Voice-over-IP over an IPSec VPN?()

A.A voice packet is sent via multiple fixed-length cells; a portion of the last cell is padding, requiring more bandwidth.
B.ADSL typically uses PPPoE encapsulation, which adds additional overhead to each voice packet.
C.A voice packet is sent via multiple fixed-length cells; each cell has about 10% Layer-2 header overhead. 
D.IPSec requires additional overhead for the header and hash. 
E.ADSL carrier band requires additional bits to be carried over the wire to the DSL Access Concentrator.

8.单项选择题

Refer to the exhibit. Available public Internet sites are sometimes used for estimating performance. Which statement regarding their use for estimating VPN performance is correct?()

A.Throughput results are valid as a value from the Teleworker's home to the corporate site, regardless of the location of the public test server. 
B.Throughput results may not be valid due to the public server's location on the Internet and fluctuations based on the use of the public server. 
C.Throughput values are not affected by the choice of split tunneling or Internet access through the VPN. 
D.Throughput results are unrelated to the Teleworker PC configuration or current PC use.

9.单项选择题What is the minimum recommended uplink/downlink speed to support a single encrypted IP voice Teleworker call?()

A.256kbps / 1024kbps
B.256kbps / 1544kbps
C.160kbps / 768kbps
D.384kbps / 384kbps
E.128kbps / 512kbps

10.单项选择题For best packet switching performance with crypto, what is the recommend packet switching path in a Cisco Teleworker Router?()

A.Process Switching
B.Silicon Switching 
C.Cisco Express Forwarding (CEF) Switching
D.Autonomous Switching

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A customer wants to TFTP a new image from the corporate network to Flash on the Teleworker router through the IPSec tunnel. How should you configure the Teleworker router?()

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Refer to the exhibit. An enterprise's security policy disallows the use of wireless on a Teleworker PC. Choose the most appropriate 830 security feature to use to enforce the security policy.()

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It is considered a best practice to use the Dead Peer Detection (DPD) feature with which VPN topologies?()

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Refer to the exhibit. Easy VPN operates in two modes. The exhibit represents network extension mode. Choose the best reason for using this mode.()

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Refer to the exhibit. Given the configuration on a Teleworker router, and knowing it was in the process of being booted, what statement would best describe the order in which the head-end peers would be selected?()

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What are disadvantages of Network Address Translation Transparency?()

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When is an IPSec SA built on the Teleworker Router?()

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What is a key characteristic of the Cisco Business Ready Teleworker solution which is different from traditional software-client based Teleworker solutions?()

题型:多项选择题

Refer to the exhibit. With an IPSec tunnel established between remote Router A and head-end router B, how can the Service Provider Edge Router identify Voice over IP packets flowing through the IPSec tunnel from a Cisco 7960 IP phone?()

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An Enterprise customer is concerned about the effort involved in allocating remote network addressing at the Teleworker location. What should you recommend to the customer?()

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