Cisco 642-874 Online Practice Questions and Exam Preparation

Cisco 642-874 Online Questions & Answers

• Question 71:

  What two sensor types exist in an IDS/IPS solution? (Choose two.)

  A. host
  B. anomaly based
  C. policy based
  D. network based
  E. signature
  A. host
  D. network based

• Question 72:

  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 73:

  AutoQoS is used to implement VoIP in the enterprise, but the trust option is not configured on the interface. Which network management Cisco IOS capability classifies the voice traffic?

  A. NetFlow
  B. SNMP
  C. IP SLAs
  D. NBAR
  D. NBAR

• Question 74:

  Which protocol will not adhere to the design requirement of the control plane being either separated or combined within a virtualization technology?

  A. FHRP
  B. STP
  C. CEF
  D. NSF with SSO
  B. STP

• Question 75:

  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 76:

  Which of the following should the Enterprise Campus network designer consider with respect to Video traffic?

  A. While it is expected that the sum of all forms of video traffic will grow to over 90% by 2013, the Enterprise will be spared this rapid adoption of video by consumers through a traditional top- down approach
  B. Avoid bandwidth starvation due to video traffic by preventing and controlling the wide adoption of unsupported video applications
  C. Which traffic model is in use, the flow direction for the traffic streams between the application components, and the traffic trends for each video application
  D. Streaming video applications are sensitive to delay while interactive video applications, using TCP as the underlying transport, are fairly tolerant of delay and jitter
  C. Which traffic model is in use, the flow direction for the traffic streams between the application components, and the traffic trends for each video application

• Question 77:

  What are two advantages of a L2 looped data center design model? (Choose two.)

  A. promotes Layer 2 high availability
  B. prevents VLAN propagation
  C. allows sharing of service modules
  D. eliminates the use of STP
  E. improves data transfer speeds
  A. promotes Layer 2 high availability
  C. allows sharing of service modules

• Question 78:

  Which network virtualization technology provides logical isolation of network traffic at Layer 3?

  A. VSS
  B. VLAN
  C. VRF-Lite
  D. MEC
  C. VRF-Lite

• Question 79:

  Which of the following facts must be considered when designing for IP telephony within an Enterprise Campus network?

  A. Because the IP phone is a three-port switch, IP telephony extends the network edge, impacting the Distribution layer.
  B. Video and voice are alike in being bursty and bandwidth intensive, and thus impose requirements to be lossless, and have minimized delay and jitter.
  C. IP phones have no voice and data VLAN separation, so security policies must be based on upper layer traffic characteristics.
  D. Though multi-VLAN access ports are set to dot1q and carry more than two VLANs they are not trunk ports.
  D. Though multi-VLAN access ports are set to dot1q and carry more than two VLANs they are not trunk ports.

• Question 80:

  Which type of application traffic typically requires prioritization across networks and may use a DSCP value of 34 (AF41)?

  A. voice
  B. interactive video
  C. call signaling
  D. routing
  E. streaming video
  F. network management
  B. interactive video