Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual （counter-rotating） ring topology？（）

A .  Never peer on transit links. B .  Build squares for deterministic convergence. C .  Build inverted U designs for deterministic convergence. D .  Summarize routes at the distribution to the core to limit EIGRP queries or OSPF LSA propagation.

A .  It will only become active after a software failure. B .  It will only become active after a hardware failure. C .  It requires that Cisco NSF be enabled in order to work successfully. D .  It synchronizes the MAC·， FIB·， and adjacency tables between Active and Standby RouteProcessors.

A . plan B . design C . implement D . prepare

A .  Utilize Layer 3 switching B .  Utilize software accelerated services C .  Aggregate end users and support a feature-rich environment D .  Perform packet manipulation and filtering at the core layer E .  Use redundant point to-point Layer 2 interconnections when where is a link or node failure.

A .  DPT B .  MPLS C .  VPLS D .  CWDM E .  DWDM F .  SONET/SDH

A .  Dynamic Trunking Protocol B .  Resilient Packet Ring C .  Synchronous Digital Hierarchy D .  Coarse Wave Division Multiplexing

A .  The NAS acts as a gateway for all Layer 3 traffic. B .  Only the MAC address is used to identify the client device. C .  User traffic remains on the same VLAN for the duration of the connection. D .  After authentication and posture assessment， client traffic no longer passes through the NAS.

A . site readiness assessment B . business requirements development C . design D . site survey E . customer educatio

A .  It will only become active after a software failure B .  It will only become active after a hardware failure C .  It requires that Cisco N3F· be enabled in order to work successfully D .  It synchronizes the MAC·， FIB·， and adjacency tables between Active and Standby Route Processor

A .  CLI commands B .  email alerts C .  SNMP traps D .  policy trace

A . DPT B . MPLS C . VPLS D . CWDM E . DWDM F . SONET/SDH

A . The NAS acts as a gateway for all Layer 3 traffic. B . Only the MAC address is used to identify the client device. C . User traffic remains on the same VLAN for the duration of the connection. D . After authentication and posture assessment, client traffic no longer passes through the NAS.

A . 0000.0C07.AC15 B . 0000.5E00.01A3 C . 0007.B400.AE01 D . 0007.5E00.B301

A .  MAC spoofing attacks allow an attacking device to receive frames intended for a different  network host. B .  Port scanners are the most effective defense against dynamic ARP inspection. C .  MAC spoofing, in conjunction with ARP snooping, is the most effective counter-measure against reconnaissance attacks that use dynamic ARP inspection (DAI) to determine vulnerable  attack points. D .  Dynamic ARP inspection in conjunction with ARP spoofing can be used to counter DHCP  snooping attacks. E .  DHCP snooping sends unauthorized replies to DHCP queries. F .  ARP spoofing can be used to redirect traffic to counter dynamic ARP inspection. G .  None of the other alternatives apply.

A . switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1 B . switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1 C . switch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1 D . switch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1

A . implement B . design C . prepare D . operate

A . Spanning Tree Protocol B . Cabling C . Frame forwarding D . Packet forwarding E . EtherChannel F . Routing protocol

A .  heuristic scanning cannot detect new malware with an unknown signature B .  heuristic scanning requires a separate license key C .  heuristic scanning increases the probability of false positives D .  heuristic scanning increases the probability of false negative

A . ARP B . RARP C . TCP D . UDP E . IP F . ICMP G . BootP

A . trunk admission control B . forwarding traffic to tunnel C . information distribution D . path selection， calculation， and setup E . traffic patterns predictio

A .  <>（the null string） B .  Wget/1.8.1 C .  Mozilla/5.0 D .  Opera/9.0

A.ISO 9001 B.SPICE C.SEI D.CMMI

A．ISO B． ANSI C． .CCITT D． IEEE