Cisco 640-864 Online Practice Questions and Exam Preparation

Cisco 640-864 Online Questions & Answers

• Question 101:

  Which three of these are layers in the Cisco SONA Architecture? (Choose three.)

  A. Applications
  B. Physical Infrastructure
  C. Presentation
  D. Integrated Transport
  E. Core Common Services
  F. Networked Infrastructure
  A. Applications
  B. Physical Infrastructure
  E. Core Common Services

• Question 102:

  According to Cisco, which four improvements are the main benefits of the PPDIOO lifecycle approach to network design? (Choose four.)

  A. faster ROI
  B. improved business agility
  C. increased network availability
  D. faster access to applications and services
  E. lower total cost of network ownership
  F. better implementation team engagement
  B. improved business agility
  C. increased network availability
  D. faster access to applications and services
  E. lower total cost of network ownership

  ---

  The PPDIOO life cycle provides four main benefits:

  +

  It improves business agility by establishing business requirements and technology strategies. + It increases network availability by producing a sound network design and validating the network operation.

  +

  It speeds access to applications and services by improving availability, reliability, security, scalability, and performance. + It lowers the total cost of ownership by validating technology requirements and planning for infrastructure changes and resource requirements. (Reference: Cisco CCDA Official Exam Certification Guide, 3rd Edition) described in the link below. Link: http://www.ciscopress.com/articles/article.asp? p=1608131andseqNum=3

• Question 103:

  Which of these is the equation used to derive a 64 Kbps bit rate?

  A. 2 x 8 kHz x 4-bit code words
  B. 8 kHz x 8-bit code words
  C. 2 x 4-bit code words x 8 kHz
  D. 2 x 4 kHz x 8-bit code words
  D. 2 x 4 kHz x 8-bit code words

  ---

  While the human ear can sense sounds from 20 to 20, 000 Hz, and speech encompasses sounds from about 200 to 9000 Hz, the telephone channel was designed to operate at about 300 to 3400 Hz. This economical range carries enough

  fidelity to allow callers to identify the party at the far end and sense their mood. Nyquist decided to extend the digitization to 4000 Hz, to capture higher-frequency sounds that the telephone channel may deliver. Therefore, the highest

  frequency for voice is 4000 Hz. According to Nyquist theory, we must double the highest frequency, so 2x4kHz = 8kHz. Each sample will be encoded into a 8-bit code. Therefore 8kHz x 8-bit code = 64 Kbps (notice about the unit Kbps: 8kHz

  = 8000 samples per second so 8000 x 8- bit = 64000 bit per second = 64 Kilobit per second = 64 Kbps)

  Link: http://encyclopedia2.thefreedictionary.com/Nyquist+theorem

  Note:

  Nyquist theory:

  "When sampling a signal (e.g., converting from an analog signal to digital), the sampling frequency must be greater than twice the bandwidth of the input signal in order to be able to reconstruct the original perfectly from the sampled version."

• Question 104:

  In which phase of PPDIOO are the network requirements identified?

  A. Design
  B. Plan
  C. Prepare
  D. Implement
  E. Operate
  F. Optimize
  B. Plan

  ---

  

  Plan Phase The Plan phase identifies the network requirements based on goals, facilities, and user needs. This phase characterizes sites and assesses the network, performs a gap analysis against best- practice architectures, and looks at the operational environment. A project plan is developed to manage the tasks, responsible parties, milestones, and resources to do the design and implementation. The project plan aligns with the scope, cost, and resource parameters established with the original business requirements. This project plan is followed (and updated) during all phases of the cycle.

• Question 105:

  Which three options represents the components of the Teleworker Solution? (Choose three.)

  A. Cisco Unified IP Phone
  B. Cisco 880 Series Router
  C. Aironet Office Extend Access Point
  D. Catalyst 3560 Series Switch
  E. Cisco 2900 Series Router
  F. MPLS Layer 3 VPN
  G. Leased lines
  A. Cisco Unified IP Phone
  B. Cisco 880 Series Router
  E. Cisco 2900 Series Router

• Question 106:

  Which statement describes the recommended deployment of DNS and DHCP servers in the Cisco Network Architecture for the Enterprise?

  A. Place the DHCP and DNS servers in the Enterprise Campus Access layer and Enterprise branch.
  B. Place the DHCP and DNS servers in the Enterprise Campus Server Farm layer and Enterprise branch.
  C. Place the DHCP server in the Enterprise Campus Core layer and Remote Access_VPN module with the DNS server in the Internet Connectivity module.
  D. Place the DHCP server in the Enterprise Campus Distribution layer with the DNS server in the Internet Connectivity module.
  B. Place the DHCP and DNS servers in the Enterprise Campus Server Farm layer and Enterprise branch.

  ---

  For the Enterprise Campus, DHCP and internal DNS servers should be located in the Server Farm and they should be redundant. External DNS servers can be placed redundantly at the service provider facility and at the Enterprise branch.

  

• Question 107:

  What is the primary consideration when choosing a routed network design over a traditional campus network design?

  A. Layer 3 service support at the network edge
  B. the routing protocol choice: open (OSPF) or proprietary (EIGRP)
  C. the routing abilities of the host devices
  D. the need to control the broadcast domains within the campus core
  A. Layer 3 service support at the network edge

  ---

  Layer 3 ability at network edge should be available to leverage the benefits of routed network design. Link: http://www.cisco.com/en/US/docs/solutions/Enterprise/Campus/campover.html

• Question 108:

  What part of the network does a top-down network design focus on for solution development?

  A. presentation
  B. hardware
  C. session
  D. application
  E. data link
  F. transport
  D. application

• Question 109:

  What routing configuration can prevent routing loops between IGPs?

  A. route filters
  B. route reflectors
  C. auto summarization
  D. virtual links
  A. route filters

• Question 110:

  Which network access control technology is recommended to use with Layer 2 access layer switches?

  A. 802.1q
  B. 802.1x
  C. 802.3af
  D. 802.3q
  E. 802.11n
  B. 802.1x