單項選擇題

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.


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1.多項選擇題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

2.多項選擇題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.

3.單項選擇題

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

4.單項選擇題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). 

5.單項選擇題

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.

6.單項選擇題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

7.單項選擇題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.

8.單項選擇題When should you enable Network Address Translation Transparency (NAT-T) on the Teleworker?()

A.when a router between the Teleworker router and the head-end VPN router is doing NAT/pNAT and does not support IPSec pass-through 
B.when the Teleworker router itself is doing NAT/pNAT
C.always
D.never

9.多項選擇題

Refer to the exhibit. A customer indicates their teleworkers plan to use IP phones in their home offices. The IT department has surveyed the planned teleworkers, resulting in the user groupings shown in the exhibit. To provide the highest voice quality, the best recommendations to this customer are().

A.Deploy all three groups with a QoS service policy, choosing the parameters for Traffic Shaping based on the average uplink speed across the three groups. 
B.Teleworkers in Groups A and B should inquire with their DSL providers for subscriptions with higher uplink bandwidths. 
C.Teleworkers in Group C should change their subscriptions to DSL for deployment consistency.
D.Teleworkers in Group A should upgrade their subscription to obtain static IP addresses 
E.Teleworkers in Group A should inquire with their DSL providers for subscriptions with higher downlink bandwidths.

10.單項選擇題Easy VPN operates in two modes. Although Client Mode has advantages, there are environments where it should not be used.()

A.Teleworker devices must be accessed from the central site (server, printers).
B.IP addressing is simplified.
C.The Teleworker LAN is a transit networking for routing.
D.An Enterprise application does not function with Network Address Translation.
E.The Teleworker router is an MPLS PE node.

最新試題

Which statement regarding 802.1X is true?()

題型:單項選擇題

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?()

題型:單項選擇題

For Ethernet-to-Ethernet routers, such as the Cisco 831 behind a cable modem or DSL bridge, a traffic shaper is configured. This is required since the output 10-Mbps interface will not be congested. Which two statements are true?()

題型:多項選擇題

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?()

題型:單項選擇題

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

題型:單項選擇題

Refer to the exhibit. Given this DSL router's sub-interface configuration, select the two true statements. Assume the interface is UP/UP.()

題型:多項選擇題

Refer to the exhibit. Select the true statement.()

題型:單項選擇題

Refer to the exhibit. Given the topology shown, what are two ways to allow the VPN to operate?()

題型:多項選擇題

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 ____.()

題型:單項選擇題

Choose the false statement concerning the use of CiscoWorks Internetwork Performance Monitor (IPM) in a Teleworker deployment.()

題型:單項選擇題