1
DCN stands for
Correct Answer
Data Center Network
☑ MCQ PRACTICE
Cloud Computing Unit 4
Practice objective questions for quick revision and examination preparation. Try answering each question before revealing the answer.
Cloud Computing MCQs - Unit 4
2
A traditional data center network is organised into which three tiers?
Correct Answer
Access, aggregation and core
3
In a three-tier data center network, servers connect to the
Correct Answer
access layer
4
Traffic that flows between servers inside the same data center is called
Correct Answer
east-west traffic
5
Traffic that flows between a data center and external clients is called
Correct Answer
north-south traffic
6
Oversubscription in a data center network means that
Correct Answer
the demand for bandwidth can exceed the available capacity
7
The fat-tree topology is used in data centers because it provides
Correct Answer
multiple paths and high bisection bandwidth
8
The TCP incast problem occurs when
Correct Answer
many servers send data to one receiver at the same time
9
TCP incast results in
Correct Answer
packet loss and a collapse in throughput
10
DCTCP stands for
Correct Answer
Data Center TCP
11
DCTCP relies on
Correct Answer
ECN (Explicit Congestion Notification) marking
12
Long-lived, large flows in a data center are called
Correct Answer
elephant flows
13
VLAN stands for
Correct Answer
Virtual Local Area Network
14
Software Defined Networking (SDN) separates
Correct Answer
the control plane from the data plane
15
A widely used protocol for communication between an SDN controller and switches is
Correct Answer
OpenFlow
16
Microsoft's cloud computing platform is
Correct Answer
Azure
17
Amazon EC2 stands for
Correct Answer
Elastic Compute Cloud
18
Amazon S3 stands for
Correct Answer
Simple Storage Service
19
Google App Engine is an example of
Correct Answer
PaaS
20
Salesforce is best known as a provider of
Correct Answer
SaaS (CRM)
21
An open-source cloud platform used to build private and public clouds is
Correct Answer
OpenStack
22
CDN stands for
Correct Answer
Content Delivery Network
23
PUE, used to measure data center energy efficiency, stands for
Correct Answer
Power Usage Effectiveness
24
A device that distributes incoming requests across multiple servers is a
Correct Answer
load balancer
25
Which protocol is modified for data center networks to reduce latency and queue buildup?
Correct Answer
DCTCP
Fill in the Blanks
26
DCN stands for ______.
Correct Answer
Data Center Network
27
A three-tier data center network has access, aggregation and ______ layers.
Correct Answer
core
28
Traffic between servers inside a data center is called ______ traffic.
Correct Answer
east-west
29
Traffic between a data center and the Internet is called ______ traffic.
Correct Answer
north-south
30
The ______ problem occurs when many servers send data to one receiver at the same time.
Correct Answer
TCP incast
31
DCTCP stands for ______.
Correct Answer
Data Center TCP
32
ECN stands for ______.
Correct Answer
Explicit Congestion Notification
33
SDN stands for ______.
Correct Answer
Software Defined Networking
34
In SDN, the ______ plane is separated from the data plane.
Correct Answer
control
35
Amazon EC2 stands for Elastic ______ Cloud.
Correct Answer
Compute
36
Amazon S3 stands for Simple ______ Service.
Correct Answer
Storage
37
Microsoft's cloud platform is called ______.
Correct Answer
Azure
38
______ is an open-source platform for building private and public clouds.
Correct Answer
OpenStack
39
PUE stands for ______.
Correct Answer
Power Usage Effectiveness
40
A ______ distributes incoming requests among multiple servers.
Correct Answer
load balancer