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Question 81Quiz 575
Operating systems and memory
A computer system uses a single-level paging scheme for memory management. The virtual address space is 32 bits. The system uses a page size of 4 KB, and the physical memory installed is 512 MB. Each page table entry (PTE) occupies 4 bytes. 32 4 KB 512 MB (PTE) Assuming that a single-level page table is used and that each process has its own page table covering the entire virtual address space, How much memory is required to store the page table for a single process? ?
L05 · Computer operating systems
Question 82Quiz 575
Database systems
Which of the following SQL queries retrieves the names of customers who have not placed any orders? (order) (customers) (name) SQL ?
L08 · Database management
Question 83Quiz 575
Programming and algorithms
What is the output of the following Python code? ? x = 5 def outer(): x = 3 def inner(): global x x = 7 inner() print(x) outer() print(x)
L09 · Programming and algorithms with Python
Question 84Quiz 575
Other
Which of the following is not a component of a context diagram? ?
L07 · System analysis and design
Question 85Quiz 575
Programming and algorithms
What will be the output of the above PHP code? PHP ? <?php $x = 5; $y = 10; function multiply() { global $x, $y; $y = $x * $y;} multiply(); echo $y; ?>
L09 · Programming and algorithms with Python
Question 86Quiz 575
Web development
Which of the following code generates a hyperlink that directs to a different section of the same web page? ?
L10 · Web development
Question 87Quiz 575
Signals, electronics and IoT
Which networking device helps in reducing amplitude distortion? ?
L06 · Data communication and computer networking
Question 88Quiz 575
Other
What is the defining characteristic of asymmetric key encryption in secure communication? ?
L01 · Basic concepts of ICT
Question 89Quiz 575
Business and digital society
Which of the following is an example of a B2C company? B2C ?
L12 · ICT in business and e-commerce
Question 90Quiz 575
Signals, electronics and IoT
Which of the following is considered a major challenge for IoT implementation? IoT ?