642-874 無料問題集「Cisco Designing Cisco Network Service Architectures」

（A）HSRP

（B）Spanning Tree Protocol

（C）EtherChannel

（D）VSS

（A）Data is accessed at the block level.

（B）Data is accessed using NFS or CIFS.

（C）Storage devices can be shared between servers.

（D）NAS is referred to as captive storage.

（E）A NAS implementation is not as fast as a DAS implementation.

（A）conditional advertising

（B）AS path prepending

（C）route reflectors

（D）communities

（E）confederations

（A）HSRP

（B）ICMP

（C）HTTP

（D）STP

（A）when the design implements Layer 2 between the access and distribution blocks

（B）when preempt tuning of the default gateway is needed

（C）when multiple vendor devices need to be supported

（D）when the design implements Layer 2 between the access switch and the distribution blocks

（E）when a robust method of backing up the default gateway is needed

（A）Maintaining access rules, based on the source IP of the client, on an internal firewall drawn from a headend RADIUS server is the most secure deployment

（B）VPN Headend routing using Reverse Route Injection (RRI) with distribution is recommended when the remote user community is small and dedicated DHCP scopes are in place

（C）It is recommended to place the VPN termination device in line with the Enterprise Edge firewall, with ingress traffic limited to SSL only

（D）Clientless SSL VPNs provide more granular access control than SSL VPN clients (thin or thick), including at Layer7

（A）R1

（B）S1

（C）A

（D）Video Conference

（E）R2

（A）The first number in the contiguous block of addresses

（B）The size of the contiguous block of addresses

（C）The last number in the contiguous block of addresses

（D）The subnet mask of the original network address

（A）IP phones have no voice and data VLAN separation, so security policies must be based on upper layer traffic characteristics.

（B）Because the IP phone is a three-port switch, IP telephony extends the network edge, impacting the Distribution layer.

（C）Video and voice are alike in being bursty and bandwidth intensive, and thus impose requirements to be lossless, and have minimized delay and jitter.

（D）Though multi-VLAN access ports are set to dot1q and carry more than two VLANs they are not trunk ports.

（A）A single switch can associate per-interface with more than one vPC domain

（B）Allows an EtherChannel between a server and a access switch while still maintaining the level of availability that is associated with dual-homing a server to two different access switches

（C）vPC can be used on both sides of the MEC, allowing a unique 16-link EtherChannel to be built between the access and aggregation switches

（D）The vPC peer link is not required for Access layer control traffic, and can instead be used to span VLANs across the vPC access switches