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Which of the following is a benefit of using a distributed database system?
Question 1Answer

a.
Decreased data availability

b.
Improved fault tolerance

c.
Limited scalability

d.
Data design complex

Question 2
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Which topology is a combination of two or more topologies?
Question 2Answer

a.
Bus

b.
Star

c.
Hybrid

d.
Ring

Question 3
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Which topology requires a central controller or hub?
Question 3Answer

a.
Mesh 

b.
Star 

c.
Bus 

d.
Ring 

Question 4
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What is the purpose of the external schema in a three-level architecture of a database system?
Question 4Answer

a.
To define the physical storage details

b.
To hide the complexity from end-users

c.
To store metadata about the database

d.
To manage database security

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Physical arrangement of the network is called ___________.
Question 5Answer

a.
topology 

b.
routing 

c.
networking 

d.
transmission mode 

Question 6
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A top-bottom relationship among the items in the database is established by __________.
Question 6Answer

a.
hierarchical schema

b.
network schema

c.
relational schema

d.
centralized schema

Question 7
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What is an example of a confidentiality attack?
Question 7Answer

a.
Reading messages (communication) without authorization 

b.
DDoS

c.
Modification

d.
Inaccessibility of data

Question 8
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The full duplex communication mode supports data in both directions at the same time.
Question 8Answer

a.
TRUE

b.
FALSE

Question 9
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Why is firewall important in a computer network?
Question 9Answer

a.
It helps to enhance internet speed.

b.
It helps to prevent unauthorized access and control data traffic.

c.
It helps to increase storage capacity.

d.
It helps to improve hardware performance.

Question 10
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What does "data redundancy" mean in a database?
Question 10Answer

a.
Storing multiple copies of the same data

b.
Ensuring data consistency

c.
Deleting unnecessary data

d.
Encrypting data for security

Question 11
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_________ guarantees that systems, applications and data are available to users when they need them.
Question 11Answer

a.
Integrity 

b.
Availability 

c.
Flexibility 

d.
Efficiency 

Question 12
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Participating computers in a network are called _________.
Question 12Answer

a.
clients

b.
servers

c.
nodes

d.
CPUs

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When information is read or copied by someone not authorized to do so, the result is known as __________ 
Question 13Answer

a.
loss of confidentiality 

b.
loss of integrity 

c.
loss of availability 

d.
loss of reliability

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Which of the following is the issue of a traditional file management system?
Question 14Answer

a.
Less File processing cost 

b.
Simple design

c.
Data Inconsistency

d.
Ease of use

Question 15
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Which OS does the client-server model fit?
Question 15Answer

a.
Real time OS 

b.
Distributed OS 

c.
Multi-tasking OS 

d.
Multi-Processing OS