CH4 - Data Center Design - Q&A

Which of the following are data center core layer characteristics? (Select all that apply.) a. 10 and 40GE b. High-latency switching c. Distributed forwarding architecture d. Service modules

A and C. Low-latency switching, distributed forwarding architecture, 10 and 40GE, and scalable IP multicast support.

Which of the following are examples of logical isolation techniques in which network segments share the same physical infrastructure? *(Select all that apply.)* a. VRF b. VLAN c. VSAN d. VSS

A, B, and C. VRFs, VLANs, and VSANs are examples of network virtualization techniques where logical isolation is used.

Which of the following are drivers for the data center core layer? (Select all that apply.) a. Future growth b. 10 and 40 Gigabit Ethernet density c. Services edge d. Administrative domains and policies

A, B, and D. 10 and 40 Gigabit Ethernet density, administrative domains and polices, and future growth are all drivers for the data center core layer.

Which of the following Cisco Nexus switches support virtual device contexts (VDCs)? a. Cisco Nexus 7000 b. Cisco Nexus 2000 c. Cisco Nexus 5000 d. Cisco Nexus 4000

A. Cisco Nexus 7000 series switches are the only switches that support VDCs.

Which of the following is a network adapter that can run at 10GE and support Fibre Channel over Ethernet (FCoE)? a. CNA b. VN-Link c. MDS d. NAS

A. Converged network adapters (CNAs) run at 10GE and support FCoE and are available from Emulex and QLogic.

Which of the following data center facility aspects best corresponds with architectural and mechanical specifications? a. Space, load, and power capacity b. PCI, SOX, and HIPPA c. Operating temperature and humidity d. Site access, fire suppression, and security alarms

A. Data center facility aspects such as space, load, power capacity, and cabling are architectural and mechanical specifications.

What enables the spanning-tree topology to appear loop-free although multiple redundant paths that are present in the physical topology? a. vPC b. VRF c. Rapid PVST+ d. VDC

A. Virtual Port Channel (vPC) enables the spanning-tree topology to appear loop-free although multiple redundant paths are present in the physical topology.

Cable management is affected by which of the following? (Select all that apply.) a. Alternative cooling technologies b. Number of connections c. Media selection d. Increase in the number of HVAC units

B and C. Cable management is affected by the number of connections and media selection.

What are *two* methods for implementing unified fabric in the data center over 10 Gigabit Ethernet? a. VSS b. FCoE c. iSCSI d. vPC

B and C. Fibre Channel over Ethernet (FCoE) and Internet Small Computer Systems Interface (iSCSI) are two methods for implementing unified fabric in the data center over 10 Gigabit Ethernet.

What services option provides an effective way to address firewall policy enforcement in a Cisco Catalyst 6500 series switch? a. IPS b. ASA SM c. Nexus 1000V d. VDCs

B. An effective way to address policy enforcement is to use an ASA SM in a Cisco Catalyst 6500 series switch to provide firewall services for the data center.

What network load-balancing option does not work with TCP? a. DNS based b. Anycast based c. Dedicated L4-7 load balancer d. ECMP

B. Anycast based only works reliably for UDP traffic because TCP uses sessions that cannot be maintained while the servers change.

Which of the following best describes how "cold" and "hot" aisles should be arranged in the data center? a. Hot and cold aisles facing each other b. Alternating pattern of cold and hot aisles c. Nonalternating pattern of hot and cold aisles d. None of the above

B. The cabinets and racks should be arranged in the data center with an alternating pattern of "cold" and "hot" aisles.

Which data center layer provides advanced application and security services and has a large STP processing load? a. Data center access layer b. Data center aggregation layer c. Data center services layer d. Data center core layer

B. The data center aggregation layer supports advanced application and security services and has a large STP processing load.

What best describes the characteristics of the Cisco data center architecture foundation? a. Bare-metal servers b. Network, compute, storage c. Security, IPS, load balancing d. Email and file sharing

B. The data center foundation transparently provides end users application access through the intelligent use of the network, compute, and storage resources.

Which data center architecture layer involves security, IPS, and load balancing? a. User services b. Data center services c. Data center foundation d. Data Center Interconnect

B. The data center services layer resides above the data center foundation and provides the necessary security firewall and IPS services that protect the applications and critical data in the data center.

Which of the following DCI options does not require a service provider to implement? a. VPLS b. MPLS c. Dark Fiber d. VPWS

C. Dark Fiber can be privately owned. VPLS, MPLS, and VPWS require a service provider to implement.

Which network load balancing option maintains TCP state information locally in its state tables? a. DNS based b. Anycast based c. Dedicated L4-7 load balancer d. ECMP

C. Dedicated L4-7 load balancers maintain TCP state information locally in their state tables.

What DCI technology allows one to extend L2 over any IP network? a. VPLS b. MPLS VPN c. OTV d. VPWS

C. Overlay Transport Virtualization (OTV) is a Nexus/ASR software feature that provides for L2 extension functionality between data centers over any IP network.

What involves the creation of independent logical paths over a shared network infrastructure? a. Access control b. Services edge c. Path isolation d. Device context

C. Path isolation involves the creation of independent logical network paths over a shared network infrastructure.

Which data center architecture layer provides Layer 2/Layer 3 physical port density for servers in the data center? a. Data center core b. Data center aggregation c. Data center access d. Data center distribution

C. The data center access layer provides Layer 2/Layer 3 physical port density for servers in the data center.

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? a. Core b. Distribution c. Access d. Aggregation

C. The data center access layer provides benefits such as port density for server farms, high-performance low-latency Layer 2 switching, and a mix of oversubscription requirements.

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? a. VN-Link technology b. Unified fabric c. Virtual Switching System (VSS) d. Virtual routing and forwarding (VRF)

C. Virtual Switching System (VSS) is a network virtualization technology that allows two physical Cisco Catalyst 6500 series switches to act as a single logical virtual switch.

Within the unified computing resources, what defines the identity of the server? a. Virtualization b. Unified fabric c. Services profile d. Virtual machines

C. Within the unified computing resources, the service profile defines the identity of the server. The identity contains many items, such as memory, CPU, network cards, and boot image.

What Nexus technology allows for a physical grouping of copper or fiber switch ports that uplinks to a parent switch such as Nexus 5K or 7K? a. ASA SM b. Nexus 1000v c. VSS d. FEX

D. A Fabric Extender (FEX) is a physical grouping of copper or fiber switch ports that uplinks to a parent switch such as Nexus 5K or 7K.

What has enabled applications to no longer be bound to bare-metal hardware resources? a. Unified fabric b. Device virtualization c. Network virtualization d. Server virtualization

D. As a result of server virtualization, many data center applications are no longer bound to bare-metal hardware resources.

What Cisco Nexus switch helps deliver visibility and policy control for virtual machines (VM)? a. Nexus 7000 b. Nexus 4000 c. Nexus 2000 d. Nexus 1000V

D. Cisco Nexus 1000V virtual switch for VMware ESX and ESXi helps deliver visibility and policy control for VMs.

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.) a. Cisco MDS b. Cisco Nexus 7000 c. Cisco Nexus 5000 d. Cisco UCS

D. Cisco Unified Computing System (UCS) is an innovative next-generation data center platform that converges computing, network, storage, and virtualization all together into one system.

Which of the following uses the highest percentage of power within the overall data center power budget? a. Lighting b. Servers and storage c. Network devices d. Data center cooling

D. Data center cooling requires the most power out of the overall power budget, next to servers and storage.

Layer 4 security and application services, including server load balancing, Secure Sockets Layer (SSL) offloading, firewalling, and intrusion prevention system (IPS) services are provided by the data center ___________ layer. a. Access b. Routed c. Core d. Aggregation

D. The Layer 4 security and application services in the data center aggregation layer include server load balancing, SSL offloading, firewalling, and IPS services.

Virtualization technologies allow a _________ device to share its resources by creating multiple logical copies of itself. a. Software b. Virtual c. Logical d. Physical

D. Virtualization technologies allow a physical device to share its resources by acting as multiple versions of itself.