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Operating System
1081
Computer Science Fundamentals
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Computer Science Fundamentals
The process of transforming plain text into unreadable text.
Decryption
Encryption
Network Security
Information Hiding
Encryption is the process of transforming readable text i.e. plain text to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key.
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rikazzz
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OS Security
With regard to DOS attack what is not true from below options?
We can stop DOS attack completely
By upgrading OS vulnerability we can stop DOS attack to some extent
DOS attack has to be stopped at network level
Such attack can last for hours
Author:
rikazzz
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Computer Science Fundamentals
Saas stands for?
Software as a service
System Software and services
Software as a system
System as a service
SAAS is Software as a service. It delivers a single application through the web browser to thousands of customers using a multitenant architecture.
Author:
rikazzz
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Computer Science Fundamentals
If a 90 GB memory has to be connected to a microprocessor, minimum how many address lines are required?
36
39
32
37
90 GB is greater than 64 GB and less than 128 GB. For 64 GB (236 Bytes), a minimum of 36 address lines are needed. So, for 90 GB, we need 36 + 1 = 37 address lines.
Author:
rikazzz
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Computer Science Fundamentals
A remote object is an object whose method can be invoked from another virtual environment.
True
False
The statement is true. JVM is java virtual environment. RMI uses stub and skeleton object for communication with the remote object. A remote object is an object whose method can be invoked from another virtual environment.
Author:
rikazzz
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OS Mass-Storage Structures
The two steps the operating system takes to use a disk to hold its files are _______ and ________
partitioning & logical formatting
swap space creation & caching
caching & logical formatting
logical formatting & swap space creation
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rikazzz
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Computer Science Fundamentals
__________ represents a particular instance of a class.
module
block
object
token
An object is an instance of the class. The data members are accessed with the help of objects.
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rikazzz
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OS Distributed File Systems
What are the characteristics of data migration?
transfer data by entire file or immediate portion required
transfer the computation rather than the data
execute an entire process or parts of it at different sites
none of the mentioned
Author:
rikazzz
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Computer Science Fundamentals
The unattended interactive information systems such as automatic teller machine or ATM is called as _________
Kiosks
Sioks
Cianto
Kiaks
The term information kiosks are used for the same. Touch screens are used the most preferred human-computer interface used in information kiosks.
Author:
rikazzz
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OS Distributed File Systems
Which layer lies between the transport layer and data link layer?
Physical
Network
Application
Session
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