List of practice Questions

For best case, linear search, searches
Which of the following statement(s) is/are true?

A. When two elements map to the same slot in hash table, it is called hashing.
B. Linear search takes a sorted list and divides it in the middle.
C. Modulo division method is a Hashing method.
D. Traversing specifies whether the key is present in the list or not.
E. Binary search takes a sorted/ordered list and divides it in the middle.
The number of swaps made in pass 1 for the following list using Insertion sort is: \[ 9, 8, 14, 2, -8, 5 \]
What will be the status of the list (given below) after pass 2 using Bubble sort? \[ 8, 7, 13, 1, -9, 4 \]
In ............ topology, if the server is not working, the entire network does not work.
Which of the following device filters the data before forwarding it? A. Switch
B. Repeater
C. Gateway
D. Ethernet Card
The statements inside the ............ block are always executed regardless of whether an exception occurred in the ................. block. What will be the appropriate clause in the above statement respectively?
Which of the file modes in the following is invalid for a text-file?
Which offset of the seek() method in the following is not valid?
Evaluate the following postfix expression and find the correct value in the following: 50, 60, +, 20, 10, -, *
Which of the following is a service that does the mapping between domain name and IP address?
The criteria for selecting a primary key for a table: A. It must uniquely identify the row.
B. It cannot have NULL value.
C. It can have NULL value.
D. It can have duplicate values.
E. It never uniquely identifies the row.
%Option
SQL applies conditions on the groups through which clause after groups have been formed?
If column "Payment" contains the data set \{10000, 15000, 25000, 10000, 15000\}, what will be the output after the execution of the given query? \[ \text{SELECT SUM(DISTINCT PAYMENT) FROM EMPLOYEE;} \]
Which of the following is not an aggregate function?
What is the output of the following SQL query? \[ \text{mysql} \,>\, \text{SELECT RIGHT("PRAYGRAJ", 3);} \]
Match List I with List II
LIST ILIST II
A. HTTPIV. Hyper Text Transfer Protocol
B. FTPI. File Transfer Protocol
C. SMTPII. Simple Mail Transfer Protocol
D. TCPIII. Transmission Control Protocol
If a computer connected to a star topology fails, the entire network will ..................
Which key is used to link two tables together?
Answer the question on the basis of following passage:
Lenovo India decided to strengthen its diversifying numbers. It decided to tap its referral system. The company asked its employees to recommend candidates and decided to reward those who successfully recommended more women for the same roles.
Today, technology major Infosys for instance, has enhanced the use of technology for the employees' referral process. It has created a portal where employees can view requirements and submit profiles of candidates directly. Employees can then track the status of their referral real-time. Which of the following is an internal source of recruitment?
Answer the question on the basis of following passage:
Lenovo India decided to strengthen its diversifying numbers. It decided to tap its referral system. The company asked its employees to recommend candidates and decided to reward those who successfully recommended more women for the same roles.
Today, technology major Infosys for instance, has enhanced the use of technology for the employee's referral process. It has created a portal where employees can view requirements and submit profiles of candidates directly. Employees can then track the status of their referral real-time. Which of the following is not included in external sources of recruitment?
Match List I with List II
LIST ILIST II
A. write linesIII. Writing a sequence of string
B. pickleI. Module for binary files
C. try-exceptIV. Exception handling
D. rbII. Opening and reading a binary file
Which of the following represents the mode of both writing and reading in binary format in a file?
Which of the following is not a valid mode to open a file?
Which error is generated by pickle.load() function when you reach end-of-file while reading from the file?