Cisco 642-873 Online Practice Questions and Exam Preparation

Cisco 642-873 Online Questions & Answers

• Question 81:

  Which QoS architecture provides scalability of implementation?

  A. IntServ
  B. DiffServ
  C. LLQ
  D. RSVP
  B. DiffServ

• Question 82:

  Which two of these are characteristics of multicast routing? (Choose two.)

  A. multicast routing uses RPF.
  B. multicast routing is connectionless.
  C. In multicast routing, the source of a packet is known.
  D. When network topologies change, multicast distribution trees are not rebuilt, but use the original path
  E. Multicast routing is much like unicast routing, with the only difference being that it has a a group of receivers rather than just one destination
  A. multicast routing uses RPF.
  C. In multicast routing, the source of a packet is known.

• Question 83:

  What WAN feature can prioritize real-time, IP-based applications when circuits may be saturated?

  A. FRTS
  B. LLQ
  C. CBWFQ
  D. WFQ
  B. LLQ

• Question 84:

  Refer to the exhibit.

  

  Which of the following two are advantages of Server virtualization using VMware vSphere? (Choose two)

  A. Retains the one-to-one relationship between switch ports and functional servers
  B. Enables the live migration of a virtual server from one physical server to another without disruption to users or loss of services
  C. The access layer of the network moves into the vSphere ESX servers, providing streamlined vSphere management
  D. Provides management functions including the ability to run scripts and to install third- party agents for hardware monitoring, backup, or systems management
  E. New functional servers can be deployed with minimal physical changes on the network
  B. Enables the live migration of a virtual server from one physical server to another without disruption to users or loss of services
  D. Provides management functions including the ability to run scripts and to install third- party agents for hardware monitoring, backup, or systems management

• Question 85:

  Refer to the exhibit. Which two features can enable high availability for first-hop Layer 3 redundancy? (Choose two.)

  A. VPC
  B. IGMP V2
  C. VRRP
  D. PIM
  E. HSRP
  C. VRRP
  E. HSRP

• Question 86:

  What data center network layer provides service module integration, Layer 2 domain definitions, and default gateway redundancy?

  A. core
  B. aggregation
  C. access
  D. edge
  B. aggregation

• Question 87:

  A network engineer must provide 40mb connections from the data center to the corporate office and two remote offices. What WAN connectivity option will outsource the routing in cooperation with the service provider?

  A. Ethernet Private Line
  B. Ethernet Multipoint Service
  C. MPLS VPN
  D. VPLS
  C. MPLS VPN

• Question 88:

  Which two options are two benefits of a Layer 2 looped model? (Choose two.)

  A. extends VLANs between switches that are connected to a common aggregation module
  B. prevents uplink ports from entering the spanning-tree blocking state
  C. provides quick convergence with Rapid Spanning Tree Protocol
  D. increases performance to end hosts using directly connected, bonded Layer 2 links
  A. extends VLANs between switches that are connected to a common aggregation module
  C. provides quick convergence with Rapid Spanning Tree Protocol

• Question 89:

  Which two options improve BGP scalability in a large autonomous system? (Choose two.)

  A. route reflectors
  B. route redistribution
  C. confederations
  D. communities
  A. route reflectors
  C. confederations

• Question 90:

  Which unique EIGRP feature allows for faster Layer 3 convergence?

  A. fast EIGRP timers
  B. feasible successors
  C. hybrid routing protocol
  D. Cisco proprietary protocol
  B. feasible successors