Cisco 642-873 Online Practice Questions and Exam Preparation

Cisco 642-873 Online Questions & Answers

• Question 11:

  Which option can be implemented to manipulate the election of PIM DR to force multicast traffic to a certain path?

  A. Assign a lower PIM DR priority to the PIM DR interface.
  B. Assign a lower IP address to the PIM DR interface.
  C. Assign a higher PIM DR priority to the PIM DR interface.
  D. Increase the cost on the PIM DR interface.
  C. Assign a higher PIM DR priority to the PIM DR interface.

• Question 12:

  Which unique characteristics of the Data Center Aggregation layer must be considered by an Enterprise Campus designer?

  A. Layer 3 routing between the Access and Aggregation layers facilitates the ability to span VLANs across multiple access switches, which is a requirement for many server virtualization and clustering technologies.
  B. "East-west" server-to-server traffic can travel between aggregation modules by way of the core, but backup and replication traffic typically remains within an aggregation module.
  C. Load balancing, firewall services, and other network services are commonly integrated by the use of service modules that are inserted in the aggregation switches.
  D. Virtualization tools allow a cost effective approach for redundancy in the network design by using two or four VDCs from the same physical switch.
  C. Load balancing, firewall services, and other network services are commonly integrated by the use of service modules that are inserted in the aggregation switches.

• Question 13:

  Which statement is the most accurate regarding IPsec VPN design for an Enterprise Campus environment?

  A. VPN device IP addressing must align with the existing Campus addressing scheme.
  B. The choice of a hub-and-spoke or meshed topology ultimately depends on the number of remotes.
  C. Sizing and selection of the IPsec VPN headend devices is most affected by the throughput bandwidth requirements for the remote offices and home worker
  D. Scaling considerations such as headend configuration, routing protocol choice, and topology have the broadest impact on the design.
  D. Scaling considerations such as headend configuration, routing protocol choice, and topology have the broadest impact on the design.

• Question 14:

  Which of these statements is correct regarding Stateful Switchover and Cisco Nonstop Forwarding?

  A. Utilizing Cisco NSF in Layer 2 environments can reduce outages to one to three seconds.
  B. Utilizing SSO in Layer 3 environments can reduce outages to one to three seconds.
  C. Distribution switches are single points of failure causing outages for the end devices.
  D. Utilizing Cisco NSF and SSO in a Layer 2 environment can reduce outages to less than one second.
  E. NSF and SSO with redundant supervisors have the most impact on outages at the access layer.
  E. NSF and SSO with redundant supervisors have the most impact on outages at the access layer.

• Question 15:

  A company's virtualization team wants to transfer control of network switching and policy management for VMware virtual servers to the networking team. What Cisco network virtualization solution should be implemented?

  A. Unified Computing System
  B. Nexus distributed virtual switch
  C. virtual network agent
  D. Nexus unified fabric switch
  B. Nexus distributed virtual switch

• Question 16:

  Which three options are basic design principles of the Cisco Nexus 7000 Series for data center virtualization? (Choose three.)

  A. easy management
  B. infrastructure scalability
  C. cost minimization
  D. upgrade of technology
  E. transport flexibility
  F. operational continuity
  B. infrastructure scalability
  E. transport flexibility
  F. operational continuity

• Question 17:

  CoS is applied for Layer 2 markings in an Ethernet environment. Which protocol must be configured on the Layer 2 switch port for CoS to work?

  A. MPLS
  B. IEEE 802.1W
  C. IEEE 802.1Q
  D. IEEE 802.1S
  C. IEEE 802.1Q

• Question 18:

  Which configuration represents resiliency at the hardware and software layers?

  A. multiple connections and FHRP
  B. HSRP and GLBP
  C. redundant supervisor and power supplies
  D. dual uplinks and switches
  A. multiple connections and FHRP

• Question 19:

  Source traffic is sent to a VIP on an SLB device, which in turn is routed to the destination server. Return traffic is policy-based routed back to the SLB.

  Which SLB design has been implemented?

  A. router mode
  B. inline bridge mode
  C. one-armed mode
  D. two-armed mode
  D. two-armed mode

• Question 20:

  A network engineer is designing an address plan based on network applications. Which application presents the greatest need for its own address block?

  A. IP telephony
  B. management
  C. multicast
  D. physical security
  A. IP telephony