25 Questions
What is paravirtualization?
A technique where the guest operating system is modified to work with the Virtual Machine Manager
What characterizes hardware-based solutions for virtual machine creation and management?
They provide support for virtual machines via firmware
How do applications that provide VMM features to guest OS differ from paravirtualization?
They enable applications to run on different hardware environments without modifying the VMM
In a brute-force attack context, what does it involve?
Using excessive computational power to try all possible key combinations
How does paravirtualization differ from creating an optimized virtual system without real hardware virtualization?
It involves modifying the guest OS to work with the VMM
What does the term 'Masquerading (breach authentication)' refer to?
Intruder sits in data flow, masquerading as sender to receiver and vice versa
What is the main characteristic of malware?
Software designed to exploit, disable, or damage computer
What do 'Rings of protection' aim to do?
Separate functions into domains and order them
What is an Access matrix used for?
Is a table that defines access permissions between specific subjects and objects
What is the purpose of the Memory Management Unit (MMU)?
Hardware device that at run time maps virtual to physical address
In Virtual Memory, what does the separation refer to?
User logical memory from physical memory
What is Copy-on-Write (COW) primarily used for?
Allowing multiple processes to share the same data until a modification is attempted
Who generates the logical address in a computer system?
CPU
When does the Memory Management Unit (MMU) perform address mapping?
At run time
What is required for a student to participate in the online in class test?
Valid identification card
Which of the following are states that a process can be in?
Running
What is a common service offered by Operating Systems?
Error Detection
Which characteristic is common to all Operating Systems?
Program execution
What do all devices from smartwatches to cluster HPCs share in common?
Program execution
Which service is not typically offered by Operating Systems?
Anti-virus
What is the output of the following code: String var_a="c"; String var_b="c"; if (var_a.equals(var_b)){ System.out.println("A and B have the same value!"); } else{ System.out.println("A and B do not have the same value!"); }
A and B have the same value!
Which of the following are valid Java identifiers?
grade
What is the output of the following code: for(int i=10;i>-1;--i) { System.out.print((i+1)+" "); }
1 2 3 4 5 6 7 8 9 10 11
What is the output of the following code: for(int i=0;I
Compilation Error
Which of the following could be a valid Java identifier based on the naming conventions?
MIN-CAPACITY
Test your knowledge on the services offered by Operating Systems. Select the correct services from the provided options. Multiple choices are allowed with a penalty for incorrect answers.
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