Next Generation Data Center Network Architecture
University Course 2012
请各位同学做完后将填好姓名和学号的答案上交。
Notes: This test paper consists of single-choice question (marked with ‘single choice’),
multiple-choice questions (without any marks)(4*21=84) , and true/false questions(2*8=16)
regarding the course ‘Next Generation Data Center Network Architecture’. Try your best to
answer the question.
Topic 1: Introduction to Datacenter Networking
1. Which services can Data Center provide?
A. E-MAIL
B. Entertaiment: Video,Music,Image
C. Web
D. ERP
E. Business Intelligence
2. Pls select components of Data Center?
A. Power system
B. Cool system
C. Racks
D. Storage & Server
E. Anti-fire system
3. Which sevices can Storage Area Network(SAN) provide in traditional Data Center networking?
A. Server-Storage traffic
B. User-Server traffic
C. Storage-Storage traffic
D. Server-Server traffic
Topic 2: 10G & 40G Networking
4. Why Ethernet become more and more popular?
A. Easy to operate
B. Bandwidth granularity
C. High cost effective
5.
A.
B.
C.
D.
Which kind of medium or cable can be used by ethernet?
Coaxial cable
Twisted pair cable
Fiber optic cable
WIFI
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Topic 3: Five Nines
6. Please choose the capabilities that Availability depends on ?
A. Supportability
B. Reliability
C. Maintainability
D. Testability
7. Which are HA features of HA network?
A. VLAG (Virtual Link Aggregation Groups)
B. NSR (Non-Stop Routing)
C. VRRP (Virtual Router Redundancy Protocol)
D. ISSU (In-Service Software Upgrade)
Topic 4: Unified Fabric
8. What's the role of CNA(Converged Network Adapter) :
A. Access LAN
B. Access SAN
C. Only can access SAN
D. Only can access LAN
9. Which part is included in CEE (Converged Enhanced Ethernet):
A. PFC – Priority-based Flow Control
B. CN – Congestion Notification
C. ETS – Enhanced Transmission Selection
D. DCBX – Data Center Bridging Exchange
Topic 5: Converged Networking and SAN
10. What is SAN? (Single Choice)
A. Storage Area Network
B. Storage Architecture Network
C. Subnet Area Network
D. Subnet Architecture Network
11. How many bits for FC ID? (Single Choice)
A. 32
B. 24,
C. 64,
D. 16
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12. How many device could be supported on one FC network? (Single Choice)
A. 128
B. 256
C. 239
D. 224
13. What is typical speed for FCoE network ? (Single Choice)
A. 1G
B. 16G
C. 10G
D. 40G
Topic 6: Smart Network Technologies
14. Please select type of hypervisor from below options:
A. Bare-metal
B. hosted
C. server
D. client
15. __ is a frame relay service that supports local bridging between multiple virtual end stations
(an internal private virtual network) and (optionally) the external bridging environment. (Single
Choice)
A. VEB
B. VEPA
C. S-channel
D. S-Vlan
16. The VSI Type consists of the network state associated with the VM and may include __
A. VEB
B. VEPA
C. ACL
D. QoS
17. EVB TLV exchange (Negotiates resource capabilities) between a station (e.g. a hypervisor) and the
adjacent bridge. This exchange is accomplished using __
(Single Choice)
A. CDP
B. VDP
C. LLDP
D. DCBX
18. What will ONF do ?
A. Drive and publish the OpenFlow specification, and license the trademark “OpenFlow
Switching” to adopters
B. Evangelize ONF’s mission to the industry and key clients
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University Course 2012
C. Explore the creation and standardization of other higher level interfaces; for example, open
APIs above a network-wide control plane
D. generate or maintain source code
19. What does “type 0” openflow switch support?
A. Forward packet to port(s)
B. Encapsulate and forward to controller
C. Drop packet
D. Send to normal processing pipeline
20. Flow Switching with any combinations of tuples as a key, choose tuples for openflow from
below options:
A. source IP
B. Source mac,
C. TCP detination sport,
D. UDP source port
21. Challenge of openflow :
A. How to provide unique load balancing functionality
B. How to create an intelligent network-based quality of service (QoS) for voice over IP (VoIP) in
a converged network
C. Failover performance
D. Low forwarding performance
Topic 7: Distributed Virtual Switch(2*8=16)
1, 5000V is an Distribute Virtual Switch from IBM ? – (True/False)
2, Qbg is NoT supported in 5000V ? – (True/False)
3, Hypervisor is used for Vitualization ? – (True/False)
4, ESX/ESXi is one type of Hypervisor ? – (True/False)
5, One DVS can have multiple controller ? – (True/False)
6, One ESX can have multiple vSwitch ? – (True/False)
7, vSwitch can be connected to Physical switch directly – (True/False)
Key: False
8, Qbg can be used for VMoTion across physical switches – (True/False)
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