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Cisco CCDA Cert Guide: Data Center Design


  1. "Do I Know This Already?" Quiz
  2. Foundation Topics
  3. Exam Preparation Tasks

Chapter Description

This chapter covers enterprise data center design fundamentals, technology trends, and challenges facing the data center to assist in preparation for the Cisco CCDA 640-864 exam.

Exam Preparation Tasks

Review All Key Topics

Review the most important topics in the chapter, noticed with the Key Topic icon in the outer margin of the page. Table 4-6 lists a reference of these key topics and the page numbers on which each is found.

Table 4-6. Key Topics

Key Topic Element



Data Center 3.0 Components

Virtualization, Unified Fabric, and Unified Computing


Data Center 3.0 Topology Components

Virtualized servers, consolidated connectivity, and network devices


Challenges in the DC

Power, space, security, and management


Data Center Facility Aspects

Architectural and mechanical specifications, environmental conditions, physical security, capacities and compliance


Data Center Power

Cooling, server, storage, and network


Data Center Cabling

Controls the temperature and humidity of the devices


DC Access Layer

Provides Layer 2 and Layer 3 physical port density for devices


DC Aggregation Layer

Aggregates L2/L3 links from the access layer and connects using upstream links to the data center core


DC Core Layer

Centralized Layer 3 routing layer in which one or more data center aggregation layers connect



Operational cost, traffic isolation, and increased performance/price ratio


Types of Virtualization

Network and device virtualization


Virtualization Technologies

VRF, vPC, and VSS


Device Contexts



Services Edge

Secure network services available to users and groups with centralized managed policy


Complete Tables and Lists from Memory

Print a copy of Appendix D, "Memory Tables," (found on the CD), or at least the section for this chapter, and complete the tables and lists from memory. Appendix E, "Memory Tables Answer Key," also on the CD, includes completed tables and lists to check your work.

Define Key Terms

Define the following key terms from this chapter, and check your answers in the glossary:

Cisco Nexus 1000V, Cisco Unified Computing System (UCS), Fibre Channel over Ethernet (FCoE), Internet Small Computer Systems Interface (iSCSI), data center space element, power, cabling, data center access, data center aggregation, data center core, virtualization technologies, network virtualization, device virtualization, access control, path isolation, services edge


The answers to these questions appear in Appendix A. For more practice with exam format questions, use the exam engine on the CD-ROM.

  1. Which data center architecture was based on client/server and distributed computing?

    1. Data Center 1.0
    2. Data Center 2.0
    3. Data Center 3.0
    4. Data Center 4.0
  2. What Cisco Nexus switch helps deliver visibility and policy control for virtual machines (VM)?

    1. Nexus 7000
    2. Nexus 4000
    3. Nexus 2000
    4. Nexus 1000V
  3. Which of the following is a network adapter that can run at 10GE and support Fibre Channel over Ethernet (FCoE)?

    1. CNA
    2. VN-Link
    3. MDS
    4. NAS
  4. What is an innovative next-generation data center platform that converges computing, network, storage, and virtualization all together into one system? (Select the best answer.)

    1. Cisco MDS
    2. Cisco Nexus 7000
    3. Cisco Nexus 5000
    4. Cisco UCS
  5. Which of the following Cisco Nexus switches support virtual device contexts using (VDCs)?

    1. Cisco Nexus 7000
    2. Cisco Nexus 2000
    3. Cisco Nexus 5000
    4. Cisco Nexus 4000
  6. What services option provides an effective way to address firewall policy enforcement in a Cisco Catalyst 6500 series switch?

    1. IPS
    2. FWSM
    3. Nexus 1000V
    4. VDCs
  7. What has enabled applications to no longer be bound to bare metal hardware resources?

    1. Unified fabric
    2. Device virtualization
    3. Network virtualization
    4. Server virtualization
  8. Which of the following supports network virtualization technology that allows two physical Cisco Catalyst 6500 series switches to act as a single logical virtual switch?

    1. VN-Link technology
    2. Unified fabric
    3. Virtual Switching System (VSS)
    4. Virtual routing and forwarding (VRF)
  9. What enables the spanning-tree topology to appear loop-free although multiple redundant paths are present in the physical topology?

    1. vPC
    2. VRF
    3. VSS
    4. VDC
  10. Which of the following are data center core layer characteristics? (Select all that apply.)

    1. 10GE
    2. High-latency switching
    3. Distributed forwarding architecture
    4. Service modules
  11. Which data center layer provides advanced application and security services and has a large STP processing load?

    1. Data center access layer
    2. Data center aggregation layer
    3. Data center services layer
    4. Data center core layer
  12. Which of the following are drivers for the data center core layer? (Select all that apply.)

    1. Future growth
    2. 10 Gigabit Ethernet density
    3. Services edge
    4. Administrative domains and policies
  13. Benefits such as port density for server farms, high-performance low-latency Layer 2 switching, and a mix of oversubscription requirements belong to which data center layer?

    1. Core
    2. Distribution
    3. Access
    4. Aggregation
  14. Cable management is affected by which of the following? (Select all that apply.)

    1. Alternative cooling technologies
    2. Number of connections
    3. Media selection
    4. Increase in the number of HVAC units
  15. Which of the following best describes how "cold" and "hot" aisles should be arranged in the data center?

    1. Hot and cold aisles facing each other
    2. Alternating pattern of cold and hot aisles
    3. Nonalternating pattern of hot and cold aisles
    4. None of the above
  16. Within the unified computing resources, what defines the identity of the server?

    1. Virtualization
    2. Unified fabric
    3. Services profile
    4. Virtual machines