單項(xiàng)選擇題What method in a Cisco IOS router can confirm that packets marked for a particular QoS marking are being matched?()

A.Issue a show policy-map interface command. 
B.Assuming Netflow is enabled, issue a show ip cache verbose flow command.
C.Issue a show crypto ipsec session command.
D.Issue a debug qos set command and a terminal monitor command.


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1.單項(xiàng)選擇題An important limitation of the Cisco Business Ready Teleworker solution is_____.()

A.IP phone extensions for teleworkers must be chosen carefully so not to duplicate campus phone extensions.
B.More security exposure exists due to lack of support for Intrusion Detection System and URL filtering for teleworker originated traffic.
C.Compressed RTP and IPSec are not compatible and result in no bandwidth savings.
D.Broadband modems must support Quality of Service for adequate voice quality.

2.單項(xiàng)選擇題

Refer to the exhibit. The Linksys router in the diagram is performing pNAT (port network address translation). What hash algorithm should you choose and why?()

A.Use hash MD5 to ensure that IKE works through NAT. 
B.Use ah-sha-hmac, as it does not check the integrity of the IP header. The IP header will change due to NAT. 
C.Use 3DES, as it will encrypt the IPSec header IP addresses and bypass addressing issues. 
D.Use esp-sha-hmac, as it does not check the integrity of the IP header. The IP header will change due to NAT.

3.單項(xiàng)選擇題

Refer to the exhibit. A Teleworker router is deployed behind a broadband Cable service. If the Teleworker router has the configuration shown, what will be the DNS server selected for DHCP clients on the LAN-side interface?()

A.DHCP clients will automatically default to the DNS root servers for all DNS requests in the IP stacks locally. 
B.DHCP clients will use the IP set in the option 150 command.
C.DHCP clients will use the DNS entry assigned by the ISP.
D.DHCP clients will have no DNS server set in the IP stack.

4.多項(xiàng)選擇題Authentication for user data traffic is important, but so is authentication for IP voice traffic. The Cisco 830 802.1 feature provides an easier method for allowing IP voice traffic through the VPN, because it().

A.requires access lists to identify the voice traffic 
B.can allow traffic from a device without 802.1X authentication, by MAC address
C.can allow traffic from Cisco IP phones by listening to their CDP advertisements
D.allows all packets marked with a ToS of 5 to bypass authentication
E.allows all IP voice packets to bypass authentication via stateful inspection

5.多項(xiàng)選擇題Your Service Provider does not support Link Fragmentation and Interleave, but upstream serialization delay on your broadband link is affecting voice quality. Which two mitigation strategies are viable?()

A.Upgrade your residential broadband service to at least 768kbps uplink.
B.Switch your home router to use PPP encapsulation.
C.Use the ip tcp adjust-mss interface command.
D.Employ QoS techniques to drop large data packets.
E.Use traffic shaping to interrupt large data packets.

6.單項(xiàng)選擇題

Refer to the exhibit. Given the CPE deployment model, the Enterprise applications shown, and the functions being provided as designated, the appropriate product choice is().

A.Cisco PIX 501 Firewall
B.Cisco 831 router
C.Cisco 837 router 
D.Cisco VPN3002 Hardware Client
E.Cisco ubr925 cable modem
F.Cisco SW VPN Client

7.單項(xiàng)選擇題Select a key benefit of DSL.()

A.TCP packet sizes can be optimized by the router so there is no IPSec or AAL5 padding.
B.The local loop is a dedicated connection for a single subscriber to the DSLAM. 
C.Access to the WAN media uses a poll/response mechanism so no two subscribers transmit at the same time. 
D.There are no distance requirements from the Central Office (CO). 

8.單項(xiàng)選擇題

Refer to the exhibit. Asymmetric broadband service with significantly greater downstream bandwidth is recommended for Teleworker deployment. Which reason is the most accurate?()

A.Most ISPs do not provide QoS for residential broadband. Asymmetric bandwidth reduces the chance of downstream congestion when traffic from Internet sites competes for bandwidth with IP voice traffic.
B.Additional downstream bandwidth compensates for insufficient upstream bandwidth. The aggregate bandwidth provides the same result. 
C.The additional bandwidth is needed to access more than one site. Most HTTP traffic is downstream. 
D.The additional downstream bandwidth allows the Enterprise VPN device to send the IP voice packets much faster, allowing them to reach the Teleworker network with less latency.

9.單項(xiàng)選擇題The LAN-side of the Teleworker router is assigned private IP address space (RFC1918), and the VPN topology is IPSec-only (no GRE protocol). When is it required to configure NAT/pNAT on the Teleworker router?()

A.when all access to the Internet is through the IPSec tunnel
B.when there is direct Internet access via split-tunneling
C.when there is no Internet access configured through the Teleworker router
D.whenever you have IOS-Firewall (CBAC) configured

10.單項(xiàng)選擇題Choose the true statement regarding QoS pre-classify.()

A.QoS pre-classify permits making QoS decisions based on elements from the unencrypted IP packet.
B.QoS pre-classify is required when encrypting voice.
C.QoS pre-classify is an advantage to Service Providers transporting encrypted packets.
D.QoS pre-classify is not designed for IPSec/GRE configurations.

最新試題

A corporation is not concerned about wireless use by Teleworkers. Authentication for any application first requires access via a web browser to a protected site. Given these requirements, choose the appropriate security feature to use to enforce the security policy.()

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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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Which statement regarding 802.1X is true?()

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An Enterprise decides to implement Authentication Proxy for per-user authentication for home offices. Each home office also supports an IP Phone. What should you do?()

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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?()

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A customer wants to deploy the Cisco Business Ready Teleworker solution, but is currently using a traditional (non-IP) PBX for voice services. What would you recommend to this customer?()

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Refer to the exhibit. Given the interface configuration on a DSL connection with PPPoE, select the true statement.()

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In a Teleworker deployment with a single IP phone connected to a Cisco 831 router, select the true statement regarding Call Admission Control.()

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Refer to the exhibit. Given the DHCP pool configuration shown on Router A, the Cisco IP phone will not boot up in the Teleworker location. What is missing from the Teleworker DHCP pool configuration?()

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Refer to the exhibit. Which of the following IOS DHCP configuration statements is required so that a Cisco skinny-based IP phone can connect with CallManager?()

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