Which three Layer 2 access designs have all of their uplinks in an active state？（）

A .  The access layer is the first oversubscription point in a data center design. B .  When using a Layer 2 loop-free design， VLANs are extended into the aggregation layer. C .  When using a Layer 2 looped design， VLANs are not extended into the aggregation layer. D .  When using a Layer 3 design， stateful services requiring Layer 2 connectivity are provisionedfrom the aggregation layer. E .  The data center access layer provides the physical-level connections to the server resourcesand only operates at Layer 3.

A . VLAN support B . compression C . authentication D . sliding windows E . multilink support F . quality of service

A . HDLC B . Ethernet C . Token Ring D . PPP E . FDDI F . Frame Relay

A . allowed codecs B . native VLAN C . auxiliary VLAN D . Cisco Unified Communications Manager IP address E . RSTP

A . Microsegmentation decreases the number of collisions on the network. B . if a switch receives a frame for an unkown destination，it uses ARP to resolve the address. C . Spanning Tree Protocol allows switches to automatically share vlan information. D . In a properly functioning network with redundant switched paths，each swiched aegment will contain oneroot bridge with all its ports in the forwarding state.All other switches in that broadcast domain will haveonly one root port. E . Establishing vlans increases the number of  broadcast domains. F . Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3address information.

A . Flex Links B . loop-free U C . looped square D . looped triangle

A . scale to a large size B . increase router peering C . provide a flexible topology with no spanning tree loops D . control broadcasts in the backbone

A . Convergence time is fractionally slower than STP. B . Broadcast and fault domains are increased. C . IP address space is difficult to manage. D . Fast uplink convergence is supported for failover and fallback.

A . ARP B . HTTPS C . SMTP D . CDP E . TFTP F . ICMP

A . VLAN support B . compression C . authentication D . sliding windows E . multilink support F . quality of service

A . HDLC B . Ethernet C . Token Ring D . PPP E . FDDI F . Frame Relay

A . Cisco SFS 3000/7000 B . Cisco Catalyst 2000 and 3000 C . Cisco Catalyst 4000 and 6000 D . Cisco Nexu

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 .  client antivirus software state B .  personal firewall settings C .  wireless cell bandwidth availability D .  IOS versions for routers and switches E .  appropriate client patch management level F .  appropriate QoS settings for client applicatio

A . a Frame Relay header includes a 1-bit discard eligible （DE） bit to provide the class of service （CoS） B . an ATM header includes a 1-bit DE field to provide the CoS C . an MPLS EXP field is inserted in the Layer 3 IP precedence field to identify the CoS D . the CoS field only exists inside Ethernet frames when 802.1Q or Inter-Switch Link （ISL） trunking is used E . in the IEEE 802.1p standard， three bits are used to identify the user priority bits for the CoS F . in the IEEE 802.1q standard， six bits are used to identify the user priority bits for the CoS

A . Flex Links B . loop-free U C . looped square D . looped triangle E . loop-free inverted U

A . Switch3, port fa0/1 B . Switch3, port fa0/12 C . Switch4, port fa0/11 D . Switch4, port fa0/2 E . Switch3, port Gi0/1 F . Switch3, port Gi0/2

A . Layer 2 access link QoS design B . enterprise-to-service-provider mapping models C . Layer 3 link access QoS design D . service provider service level agreements E . Layer 2 link access load balancing

A . CMC B . CLI C . API D . VSM E . UI

A . HDLC B . Ethernet C . Token Ring D . PPP E . FDDI F . Frame Relay

A . client antivirus software state B . personal firewall settings C . wireless cell bandwidth availability D . IOS versions for routers and switches E . appropriate client patch management level F . appropriate QoS settings for client application Answer:

A . Microsegmentation decreases the number of collisions on the network. B . if a switch receives a frame for an unkown destination,it uses ARP to resolve the address. C . Spanning Tree Protocol allows switches to automatically share vlan information. D . In a properly functioning network with redundant switched paths,each switched aegment will contain one root bridge with all its ports in the forwarding state.All other switches in that broadcast domain will have only one root port. E . Establishing vlans increases the number of broadcast domains. F . Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3 address information.

A . Cisco Catalyst 2000 and 3000 B . Cisco Nexus C . Cisco Catalyst 4000 and 6000 D . Cisco SFS 3000/7000