Information Technology Reference
In-Depth Information
3.
A. Converged network adapters (CNAs) run at 10GE and support FCoE and are avail-
able from Emulex and QLogic.
4.
D. Cisco Unified Computing System (UCS) is an innovative next-generation data cen-
ter platform that converges computing, network, storage, and virtualization all togeth-
er into one system.
5.
A. Cisco Nexus 7000 series switches are the only switches that support VDCs.
6.
B. The FWSM is an effective way to address policy enforcement in a Cisco Catalyst
6500 series switch, by providing firewall services for the data center.
7.
D. As a result of server virtualization, many data center applications are no longer
bound to bare-metal hardware resources.
8.
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.
9.
A. Virtual Port Channel (vPC) enables the spanning-tree topology to appear loop-free
although multiple redundant paths are present in the physical topology.
10.
A and C. Low-latency switching, distributed forwarding architecture, 10GE, and scala-
ble IP multicast support are all DC core layer characteristics.
11.
B. The data center aggregation layer supports advanced application and security serv-
ices and has a large STP processing load.
12.
A, B, and D. 10 Gigabit Ethernet density, administrative domains and polices, and
future growth are all drivers for the data center core layer.
13.
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.
14.
B and C. Cable management and is affected by the number of connections and media
selection.
15.
B. The cabinets and racks should be arranged in the data center with an alternating
pattern of “cold” and “hot” aisles.
16.
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.
Chapter 5
“Do I Know This Already?” Quiz
1.
E. Both 802.11a and 802.11n use UNII frequencies.
2.
B. The Industrial, Scientific, and Medical (ISM) band of frequencies provides 11 chan-
nels for WLANs.
