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单选题
BCP （Best Common Practices） 38/RFC 2827 Ingress and Egress Packet Filtering would help mitigate whatclassification of attack？（）
A
Sniffing attack
B
Denial of service attack
C
Port Scan attack
D
Reconnaisance attack
E
Spoofing attack
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On which component are RED and WRED managed in the router?()
A. I/O moduleB. switch fabricC. egress line moduleD. ingress line module
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How is an RSVP resv message sent back to the ingress router?()
A. reverse path of the RROB. least cost to the ingress routerC. shortest path to the egress routerD. reverse path of the path vector TLV
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What is the term "ordered control" mean regarding how MPLS LSPs are established?()
A. establish starting at the egress router going back to the ingress routerB. establish starting at the ingress router going downstream to the egress routerC. establish when a router learns of a new prefixD. establish when the path correctly matches the reverse path forwarding check
考题
The router SIS-R has been configured in a CIS network. As a network administrator, you were required to enable MPLS on that router.Which of the following description is making sense on the basis of the output information?（）A. CEF switching is only needed to forward labeled packets.B. CEF switching is needed on both ingress and egress interfaces on which MPLS is enabled.C. Interface-level CEF switching is needed only on egress interfaces that are sending IP packets on which the egress LSR performs the label imposition process.D. Interface-level CEF switching is needed only on ingress interfaces that are receiving IP packets on which the ingress LSR performs the label imposition process.
考题
WhatareBCP38(BestCommonPractices38)／RFC2827IngressPacketFilteringPrinciples?()
A.FilterSmurfICMPpackets.B.FilterasclosetothecoreaspossibleC.FilterasclosetotheedgeaspossibleD.FilteraspreciselyaspossibleE.Filterbothsourceanddestinationwherepossible
考题
BCP(BestCommonPractices)38／RFC2827IngressandEgressPacketFilteringwouldhelpmitigatewhatclassificationofattack?()
A.SniffingattackB.DenialofserviceattackC.PortScanattackD.ReconnaisanceattackE.Spoofingattack
考题
WhenimplementingbestpracticesforIPSourceAddressSpoofingandDefeatingDenialofServiceAttackswithIPSourceAddressSpoofing,whatRFCiscommonlyusedtoprotectyournetwork?()
A.RFC1149B.RFC3704C.RFC1918D.RFC2827
考题
Whichis abenefitofimplementing RFC2827?()
A.PreventsDoSfromlegimate，non-hostileendsystemsB.Preventsdisruptionofspecialservices，suchasMobileIPC.DefeatsDoSAttackswhichemployIPSourceAddressSpoofingD.RestrictsdirectedbroadcastsattheingressrouterE.AllowsDHCPorBOOTPpacketstoreachtherelayagentsasappropriate
考题
Which QoS model manages the QoS requirements for the network on a per-hop behavior （PHB） basis？（）A、best-effort deliveryB、ingress committed rate （ICR）C、shaping and policingD、egress committed rate （ECR）E、Integrated Services （IntServ）F、differentiated services （DiffServ）
考题
On Cisco Nexus 5000 Series Switches， where are the virtual output queues implemented， and what is the main purpose of virtual output queues？（）A、 on all ingress interfaces； to ensure maximum throughput on a per-egress， per-CoS basisB、 on all ingress interfaces； to provide independent congestion management and 16 queuesC、 on all egress interfaces； so that a congested egress port does not affect traffic directed to other egress portsD、 on all egress interfaces； to prevent head-of-line blocking by utilizing multiple virtual output queuesE、 on all egress interfaces； to be able to use EEE 802.1p CoS
考题
Which one is the most important based on the following common elements of a network design？（）A、Business needsB、Risk analysisC、Security policyD、Best practices
考题
On which component are RED and WRED managed in the router?（）A、I/O moduleB、switch fabricC、egress line moduleD、ingress line module
考题
When implementing best practices for IP Source Address Spoofing and Defeating Denial of Service Attacks with IP SourceAddress Spoofing， what RFC is commonly usedto protect your network？（）A、 RFC 1149B、 RFC 3704C、 RFC 1918D、 RFC 2827
考题
With MPLS Fast Reroute, what is the "point of local repair"?（）A、egress routerB、ingress routerC、start of the bypass tunnelD、all routers in the bypass tunnel
考题
MPLS网络中，关于LER描述正确的是（）。A、Ingress LER压入标签B、Ingress LER弹出标签C、Egress LER压入标签D、VRP在缺省情况下，Egress LER弹出标签
考题
What are BCP 38 （Best Common Practices 38）/RFC 2827 Ingress Packet Filtering Principles？（）A、Filter Smurf ICMP packets.B、Filter as close to the core as possibleC、Filter as close to the edge as possibleD、Filter as precisely as possibleE、Filter both source and destination where possible
考题
BCP （Best Common Practices） 38/RFC 2827 Ingress and Egress Packet Filtering would help mitigate whatclassification of attack？（）A、Sniffing attackB、Denial of service attackC、Port Scan attackD、Reconnaisance attackE、Spoofing attack
考题
What are three facts control plane policing？ （）A、a set of rules that can be established and associated with the ingress and egress ports of the control planeB、improves performance of the control plane by marking control plane packets with DSCPEFC、protects the control plane on a router from DoS attacksD、treats the control plane as a separate entity with its own ingress （input） and egress （output） portsE、provides the control plane with a separate token bucketF、enhances security of the control plane by tunneling packets to and from the control plane
考题
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.
考题
Which is a benefit of implementing RFC 2827？（）A、Prevents DoS from legimate， non-hostile end systemsB、Prevents disruption of "special services"， such as Mobile IPC、Defeats DoS Attacks which employ IPSource Address SpoofingD、Restricts directed broadcasts at the ingress routerE、Allows DHCP or BOOTP packets to reach the relay agents asappropriate
考题
Assume that the PEs are separated by Multiple P routers.How many labels should the ingress PE push for BPE functionality？（）A、1B、NoneC、3D、2E、It depends on the numbers of hops between the ingress and egress PE
考题
单选题On Cisco Nexus 5000 Series Switches， where are the virtual output queues implemented， and what is the main purpose of virtual output queues？（）A
on all ingress interfaces； to ensure maximum throughput on a per-egress， per-CoS basisB
on all ingress interfaces； to provide independent congestion management and 16 queuesC
on all egress interfaces； so that a congested egress port does not affect traffic directed to other egress portsD
on all egress interfaces； to prevent head-of-line blocking by utilizing multiple virtual output queuesE
on all egress interfaces； to be able to use EEE 802.1p CoS
考题
单选题How is an RSVP resv message sent back to the ingress router？（）A
reverse path of the RROB
least cost to the ingress routerC
shortest path to the egress routerD
reverse path of the path vector TLV
考题
单选题When implementing best practices for IP Source Address Spoofing and Defeating Denial of Service Attacks with IP SourceAddress Spoofing， what RFC is commonly usedto protect your network？（）A
RFC 1149B
RFC 3704C
RFC 1918D
RFC 2827
考题
单选题What is the term "ordered control" mean regarding how MPLS LSPs are established?（）A
establish starting at the egress router going back to the ingress routerB
establish starting at the ingress router going downstream to the egress routerC
establish when a router learns of a new prefixD
establish when the path correctly matches the reverse path forwarding check
考题
单选题How is an RSVP resv message sent back to the ingress router?（）A
reverse path of the RROB
least cost to the ingress routerC
shortest path to the egress routerD
reverse path of the path vector TLV
考题
多选题What are BCP 38 （Best Common Practices 38）/RFC 2827 Ingress Packet Filtering Principles？（）AFilter Smurf ICMP packets.BFilter as close to the core as possibleCFilter as close to the edge as possibleDFilter as precisely as possibleEFilter both source and destination where possible
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