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单选题
Cisco Express Forwarding (CEF) is mainly used to increase packet switching speed, reducing the overhead and delays introduced by other routing techniques, increasing overall performance.Which of the following concerning CEF is recommended by Cisco?（）
A
Use default Layer 4 hash in core.
B
Use default Layer 3 hash in distribution.
C
Use default Layer 4 hash in distribution.
D
Use default Layer 3 hash in core and Layer 3 + Layer 4 hash in distribution layer.
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更多 “单选题Cisco Express Forwarding (CEF) is mainly used to increase packet switching speed, reducing the overhead and delays introduced by other routing techniques, increasing overall performance.Which of the following concerning CEF is recommended by Cisco?（）A Use default Layer 4 hash in core.B Use default Layer 3 hash in distribution.C Use default Layer 4 hash in distribution.D Use default Layer 3 hash in core and Layer 3 + Layer 4 hash in distribution layer.” 相关考题
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Refer to the exhibit. You want to minimize the downtime that results from supervisor engine switchovers on Cisco 6500 Series Switches and Cisco 7600 Series Routers. To achieve this, you are considering deploying a Cisco Nonstop Forwarding with Stateful Switchover solution using OSPF.In the exhibit you can see the output of the show ip ospf neighbor detail command.Which trait of systems using Cisco Nonstop Forwarding with Stateful Switchover and OSPF is shown in the exhibit output and will impact your plan?（）A. Stateful Switchover for Cisco Nonstop Forwarding only works with BGP.B. Stateful Switchover for Cisco Nonstop Forwarding must be configured on all adjacent routers.C. Cisco Nonstop Forwarding with Stateful Switchover helper mode is not supported on the adjacent router.D. Cisco Nonstop Forwarding with Stateful Switchover helper mode for OSPF has been promiscuousstandardized and is supported on the adjacent router.
考题
Which two practices will avoid Cisco Express Forwarding polarization?()
A. The core layer should use default Layer 3 hash information.B. The core layer should use default Layer 4 hash information.C. The distribution layer should use default Layer 3 hash information.D. The distribution layer should use default Layer 4 hash information.E. The core layer should use Layer 3 and Layer 4 information as input to the Cisco Expressing Forwarding hashing algorithm.F. The distribution layer should use Layer 3 and Layer 4 information as input into the Cisco Expressing Forwarding hashing algorithm.
考题
Which three options are prerequisites to configuring Cisco AutoOoS？（）A、Cisco Express Forwarding （CEF） must be globally enabled.B、Prior to the enabling of the Cisco AutoOoS feature， the bandwidth command must be applied on all interfaces or subinterfaces.C、After the enabling of the Cisco AutoOoS feature， the bandwidth command must be applied on all interfaces or subinterfaces .D、OoS policies must be enabled on all interfaces that will participate in the AutoOoS configuration.E、An IP address must be configured on all low-bandwidth interfaces （768 kb/s or lower） that will participate in the AutoOoS configurationF、An IP address must be configured on all interfaces that will participate in the AutoOoS configuration
考题
Which two statements are true about Unicast Reverse Path Forwarding Loose Mode？（）A、It is used in multihome network scenarios.B、It can be used with BGP to mitigate DoS and DDoS.C、It does not need to have CEF enabled.D、It is enabled via the interface level command ip verify unicast reverse-path.E、It cannot be used with "classification" access lists.
考题
The Cisco AutoQoS feature is being used throughout the Company VOIP network. Which three statements about this feature are true？（）A、The "mls qos" global configuration command must be entered before configuring AutoQoS.B、CEF must be enabled.C、The "no auto qos voip" command is used to disable Cisco AutoQos and revoke all configurations generated by Cisco AutoQos.D、CDP must be enabled.E、SNMP must be enabled.
考题
Cisco Express Forwarding has been enabled on router TK1. With CEF， prefixes that require exception processing can be cached with one of which four special adjacencies？ （）A、KickB、DropC、ForwardD、NullE、DiscardF、GleanG、Express
考题
What is a requirement to enable Cisco IOS IPS with 5.x signature？（）A、disable Zone-Based Firewall as the two features are not compatibleB、disable Cisco Express Forwarding as the two features are not compatibleC、generate a certificate and export on Cisco.com to receive a signature updateD、import the public RSA key from the Cisco IPS team that allows the router to verify that a signatureupdate （which was signed by this key） comes from Cisco
考题
Which one of the following potential issues is eliminated by using split horizon？（）A、Joined horizonsB、Packet forwarding loopsC、cisco Express Forwarding load-balancing inconsistencyD、Asymmetric routing throughout the network
考题
Where are CTI route points added or configured for Cisco Unified Contact Center Express? （）A、Cisco Unified CallManager Device ConfigurationB、Cisco Unified Contact Center Express Directory Management C、Cisco Supervisor Desktop D、Cisco CRS Administration, JTAPI Trigger Creation E、Cisco Unified Contact Center Express Media Subsystem
考题
Cisco IOS is the software used on the vast majority of Cisco Systems routers and current Cisco network switches. As a network administrator, you are required to configure MPLS on Cisco IOS. In such a situation, which three of the following steps are necessary to take?（）A、Start LDP.B、Enable CEF switching.C、Configure conditional label advertising.D、Enable label switching on frame mode interfaces.E、disable IP TTL propagationF、configure conditional label advertising
考题
Which two statements about the Cisco Nexus 1000V VSM are true?（）A、It performs switching decisions and forwarding for the VEMB、It can be run on a virtual machineC、It can be used for remote VEM switching Iine cards
考题
Which three MPLS statements are true？（）A、Cisco Express Forwarding （CEF） must be enabled as a prerequisite to running MPLS on a Cisco router.B、Frame-mode MPLS inserts a 32-bit label between the Layer 3 and Layer 4 headers.C、MPLS is designed for use with frame-based Layer 2 encapsulation protocols such as Frame Relay， but is not supported by ATM because of ATM fixed-length cells.D、OSPF， EIGRP， IS-IS， RIP， and BGP can be used in the control plane.E、The control plane is responsible for forwarding packets.F、The two major components of MPLS include the control plane and the data plane.
考题
Which of the following IOS features can prevent IP spoofing attacks？（）A、PPP over EthernetB、Cisco Express forwardingC、MPLS traffic EngineeringD、IS-IS routingE、Unicast Reverse Path Forwarding（uRPF）
考题
For best packet switching performance with crypto, what is the recommend packet switching path in a Cisco Teleworker Router?（）A、Process SwitchingB、Silicon Switching C、Cisco Express Forwarding (CEF) SwitchingD、Autonomous Switching
考题
Which of the following is not a characteristic of Cisco Express Forwarding？（）A、The adjacency table is populated from a router’s ARP cacheB、CEF does not require the first packet of a data flow to be process switchedC、CEF maintains the Forward Information Base and the adjacency tableD、CEF can be enabled with the interface command ip cefE、The FIB is populated from a router’s IP routing tableF、On most router platforms CEF is enabled by default
考题
多选题Which three methods can be used to troubleshoot problems using the Cisco Unity Express GUI?（）Arefresh MWIBturn on loggingCview trace outputDview logging outputEturn on trace functionsFview system configuration
考题
单选题Which routing method is used to determine the forwarding paths for IP traffic in a Secure Cisco Single-Site Network foundation solution with remote teleworkers？（）A
RIPB
EIGRPC
OSPFD
Static and default routes
考题
多选题Which three MPLS statements are true？（）ACisco Express Forwarding （CEF） must be enabled as a prerequisite to running MPLS on a Cisco router.BFrame-mode MPLS inserts a 32-bit label between the Layer 3 and Layer 4 headers.CMPLS is designed for use with frame-based Layer 2 encapsulation protocols such as Frame Relay， but is not supported by ATM because of ATM fixed-length cells.DOSPF， EIGRP， IS-IS， RIP， and BGP can be used in the control plane.EThe control plane is responsible for forwarding packets.FThe two major components of MPLS include the control plane and the data plane.
考题
单选题Which preconfiguration task is necessary for VoiceView Express? （）A
Ensure that the authentication server URL points to Cisco Unity Express. B
Ensure that authentication server is owned by the JTAPI user on Cisco Unity Express. C
Ensure that all phones point to the authentication server URL owned by Cisco Unity Express. D
Ensure that all phones that are owned by the JTAPI user point to the authentication server URL on Cisco Unity Express.
考题
多选题Cisco IOS is the software used on the vast majority of Cisco Systems routers and current Cisco network switches. As a network administrator, you are required to configure MPLS on Cisco IOS. In such a situation, which three of the following steps are necessary to take?（）AStart LDP.BEnable CEF switching.CConfigure conditional label advertising.DEnable label switching on frame mode interfaces.Edisable IP TTL propagationFconfigure conditional label advertising
考题
多选题Cisco Express Forwarding has been enabled on router TK1. With CEF， prefixes that require exception processing can be cached with one of which four special adjacencies？ （）AKickBDropCForwardDNullEDiscardFGleanGExpress
考题
单选题Cisco Express Forwarding （CEF） is mainly used to increase packet switching speed， reducing theoverhead and delays introduced by other routing techniques， increasing overall performance.Which of the following concerning CEF is recommended by Cisco？（）A
Use default Layer 4 hash in core.B
Use default Layer 3 hash in distribution.C
Use default Layer 4 hash in distribution.D
Use default Layer 3 hash in core and Layer 3 + Layer 4 hash in distribution layer.
考题
单选题Which of the following is not a characteristic of Cisco Express Forwarding？（）A
The adjacency table is populated from a router’s ARP cacheB
CEF does not require the first packet of a data flow to be process switchedC
CEF maintains the Forward Information Base and the adjacency tableD
CEF can be enabled with the interface command ip cefE
The FIB is populated from a router’s IP routing tableF
On most router platforms CEF is enabled by default
考题
多选题Which three options are prerequisites to configuring Cisco AutoOoS？（）ACisco Express Forwarding （CEF） must be globally enabled.BPrior to the enabling of the Cisco AutoOoS feature， the bandwidth command must be applied on all interfaces or subinterfaces.CAfter the enabling of the Cisco AutoOoS feature， the bandwidth command must be applied on all interfaces or subinterfaces .DOoS policies must be enabled on all interfaces that will participate in the AutoOoS configuration.EAn IP address must be configured on all low-bandwidth interfaces （768 kb/s or lower） that will participate in the AutoOoS configurationFAn IP address must be configured on all interfaces that will participate in the AutoOoS configuration
考题
单选题For best packet switching performance with crypto, what is the recommend packet switching path in a Cisco Teleworker Router?（）A
Process SwitchingB
Silicon Switching C
Cisco Express Forwarding (CEF) SwitchingD
Autonomous Switching
考题
多选题Which two statements are true about Unicast Reverse Path Forwarding Loose Mode？（）AIt is used in multihome network scenarios.BIt can be used with BGP to mitigate DoS and DDoS.CIt does not need to have CEF enabled.DIt is enabled via the interface level command ip verify unicast reverse-path.EIt cannot be used with classification access lists.
考题
多选题Which two statements about the Cisco Nexus 1000V VSM are true?（）AIt performs switching decisions and forwarding for the VEMBIt can be run on a virtual machineCIt can be used for remote VEM switching Iine cards
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