Sorting Algorithms
Best Case Time Complexity of Merge Sort?
O(nlogn)
What type of database is optimized for OLAP?
Data Warehouse
In which scheduling algorithm does the operating system give each process a slice of time in a circular order?
Robin Round
4th layer of OSI model is called
Transport Layer
def reverse_string (string) :
reversed string = ""
for i in range (len (string), -1, -1):
reversed string += string[i]
return reversed _string
print (reverse_string("hello world"))
It should be len(string)-1
Which non-comparison-based sorting algorithm is highly efficient for sorting integers?
Radix
What does ORM stand for in database management?
Object Relational Mapping
In which year was the first version of the Linux operating system released?
1991
What is the inclusion of a secret message in otherwise unencrypted text or images called?
Steganography
class MyClass:
def __init__(self, value):
self.value = value
obj1 = MyClass(5)
obj2 = MyClass(10)
result = obj1 + obj2
What kind of error will this code throw?
TypeError
In the context of sorting algorithms, what is a 'stable' sort?
Preserves Input Order
What type of index in a database improves the performance of queries but can slow down data modification operations?
B-Tree
Which Linux directory contains system configuration files?
/etc
Mr. John is a small businessman who runs Hardware. He has been experiencing problems with his small accounting department, which he depends on to provide sales reports. Mr. John wants to share information between his 7 computer stations and have on central printing area. What type of network would you recommend to Mr. John?
LAN
public class A {
public static void main(String[] args)
{
System.out.println('j' + 'a' + 'v' + 'a');
}
}
418
Which sorting algorithm is considered optimal for lists that are already mostly sorted?
Insertion
Which normal form is concerned with the removal of transitive dependency?
Third Normal Form
Name three Unix-like operating system
Linux, BSD, Solaris, AIX, HP-UX
Until when will 2,048-bit RSA keys be sufficient?
2030
d = {}
d['1']=1
d[1.0]=2
d[1]=3
sum=0
for k in d:
sum+=d[k]
print(sum)
4
Which sorting algo does Python use and its time complexity?
Timsort
What do you call a precompiled collection of one or more SQL statements that are stored under a name and processed as a unit?
Stored Procedure
What is the default file system for Windows?
NFTS
List the 6 common types of cybersecurity attacks.
Malware
SQL Injection Attack
Cross-Site Scripting (XSS)
Denial-of-Service (DoS)
Man-in-the-Middle Attacks
Credential Reuse
Phishing
Session Hijacking
fruit_list1 = ['Apple', 'Berry', 'Cherry', 'Papaya']
fruit_list2 = fruit_list1
fruit_list3 = fruit_list1[:]
fruit_list2[0] = 'Guava'
fruit_list3[1]='Kiwi'
sum=0
for ls in (fruit_list1, fruit_list2, fruit_list3):
if ls[0]=='Guava':
sum += 1
if ls[1] == 'Kiwi':
sum += 20
print (sum)
22