Description : State true of false. i) Public can only be assigned to class ii) Protected protects a statement iii) Protected method is never accessible outside the package iv) Friendly variable may be accessible outside class A) i- ... -false, ii-true, iii-false, iv-false D) i-true, ii-false, iii-false, iv-true
Last Answer : C) i-false, ii-true, iii-false, iv-false
Description : A method name myMethod( ) that needs two integer arguments is declared as A) public void myMethod( ); B) public void myMethod(int a, int b); C) public void myMethod(int a, b); D) public int myMethod(a, b);
Last Answer : B) public void myMethod(int a, int
Description : In Java, when we implement an interface method, it must be declared as: (A) Private (B) Protected (C) Public (D) Friend
Last Answer : (C) Public
Description : Consider the following JAVA program: public class First { public static int CBSE (int x) { if (x < 100) x = CBSE (x +10); return (x - 1); } public static void main (String[] args){ System.out.print(First.CBSE(60)); } } What does this program print? (1) 59 (2) 95 (3) 69 (4) 99
Last Answer : (2) 95
Description : Why is the main method static?
Last Answer : A: So that it be available for execution without the need of any object.
Description : Which method will a web browser call on a new applet? A) main method B) destroy method C) execute method D) init method
Last Answer : D) init method
Description : What would happen if "String[]args" is not included as argument in the main method. A) No error B) Compilation error C) Program won't run D) Program exit
Last Answer : C) Program won't run
Description : Which of the following statements is not true about disk-arm scheduling algorithms ? (A) SSTF (shortest seek time first) algorithm increases performance of FCFS. (B) The number of requests for disk ... arm movements. (D) SCAN and C-SCAN algorithms are less likely to have a starvation problem.
Last Answer : (B) The number of requests for disk service are not influenced by file allocation method.
Description : In ............. method, the word is written to the block in both the cache and main memory, in parallel. (A) Write through (B) Write back (C) Write protected (D) Direct mapping
Last Answer : (A) Write through
Description : Which of the following characteristics of constructor are true. i) They should be declared in the public section. ii) They are invoked automatically when the objects are created. iii) They do not have return type and void also. ... and v C) Only i, iii, iv and v D) All i, ii, iii, iv and v
Last Answer : D) All i, ii, iii, iv and v
Description : A ………………. is an extension of an enterprise’s private intranet across a public Network such as the Internet across a public Network such as the Internet, creating a secure private connection. A) VNP B) VPN C) VSN D) VSPN
Last Answer : B) VPN
Description : Find the false statement: (A) In Modern Cryptography, symmetric key algorithms use same key both for Encryption and Decryption. (B) The Symmetric cipher DES (Data Encryption Standard) was widely used ... and 124 bits. (D) Public key algorithms use two different keys for Encryption and Decryption.
Last Answer : (C) The AES (Advanced Encryption Standard) cryptosystem allows variable key lengths of size 56 bits and 124 bits.
Description : Using the RSA public key crypto system, if p=13, q=31 and d=7, then the value of e is (A) 101 (B) 105 (C) 103 (D) 107
Last Answer : (C) 103 Explanation: Basic RSA Algorithm: 1. Choose two primes, p & q. 2. Compute n=p*q and z=(p-1)*(q-1). 3. Choose a number relatively prime to z and call it d. 4. Find e such that e*d= ... each of these in turn by 7 to see which is divisible by 7, we find that 721/7 = 103, hence e = 103.
Description : When the inheritance is private, the private methods in base class are.................. in the derived class (in C++). (A) inaccessible (B) accessible (C) protected (D) public
Last Answer : (A) inaccessible
Description : In RSA public key cryptosystem suppose n=p*q where p and q are primes. (e,n) and (d,n) are public and private keys respectively. Let M be an integer such that 0
Last Answer : (2) I and III
Description : What is the similarity between a method and a constructor?
Last Answer : A: Below are some of the similarities: 1) Both of them are member methods of any class. 2) Both can be parameterised or non-parameterised. 3) Both can be overloaded.
Description : What is an abstract method?
Last Answer : A: An abstract method is a method that is declared without an implementation (without braces, and followed by a semicolon), like this: abstract void point(double x, double y);
Description : What is the function of readLine() method?
Last Answer : A: readLine() method reads a line of text (which you input) and returns the result in the form of a String.
Description : Each method in a java class must have a unique name . A) Not necessary B) True C) False D) None of the above
Last Answer : A) Not necessary
Description : Using which keyword we can access value of the instance variables and class variables of that class inside the method of that class itself. A) super B) final C) this D) either super or this
Last Answer : C) this
Description : In Java servlet method init( ) is called ..................... times. A) 1 B) 2 C) 0 D) multiple
Last Answer : A) 1
Description : For execution of DELETE SQL query in JDBC, ............. method must be used. A) executeQuery() B) executeDeleteQuery() C) executeUpdate() D) executeDelete()
Last Answer : C) executeUpdate()
Description : break statement is used to i) get out of method ii) end aprogram iii) get out of a loop iv) get out of the system A) 1 & 2 B) 1,2 & 3 C) 1 & 3 D) 3
Last Answer : D) 3
Description : A direct method of deadlock prevention is to prevent the occurrence of ………….. A) Mutual exclusion B) Hold and wait C) Circular waits D) No preemption
Last Answer : C) Circular waits
Description : A direct method of deadlock prevention is to prevent the occurrences of ................... A) Mutual exclusion B) Hold and wait C) Circular waits D) No preemption
Description : ..................... provides a larger sized of virtual memory but require virtual memory which provides multidimensional memory. A) Paging method B) Segmentation method C) Paging and segmentation method D) None of these
Last Answer : B) Segmentation method
Description : ……………… is a tabular method for describing the logic of the decisions to be taken. A) Decision tables B) Decision tree C) Decision Method D) Decision Data
Last Answer : A) Decision tables
Description : ………………. is responsible for all aspects of data processing, operation research, organization and method, system analysis and design investments. A) Management Services Director B) Data Processing Manager C) Computer Manager D) Both B and C
Last Answer : A) Management Services Director
Description : In general, the binary search method needs no more than ……………. comparisons. A) [log2n]-1 B) [logn]+1 C) [log2n] D) [log2n]+1
Last Answer : D) [log2n]+1
Description : ………………… is preferred method for enforcing data integrity A) Constraints B) Stored Procedure C) Triggers D) Cursors
Last Answer : A) Constraints
Description : ……………. is a preferred method for enforcing data integrity A) Constraints B) Stored procedure C) Triggers D) Cursors
Description : HSAM stands for ………. A) Hierarchic Sequential Access Method B) Hierarchic Standard Access Method C) Hierarchic Sequential and Method D) Hierarchic Standard and Method
Last Answer : A) Hierarchic Sequential Access Method
Description : A simple cabling method, known as the ……………… topology allows about 30 computers on a maximum cable length of about 600 feet. A) Ring B) Bus C) Star D) Mesh
Last Answer : B) Bus
Description : Which of the following algorithm design technique is used in the quick sort algorithm? a) Dynamic programming b) Backtracking c) Divide-and-conquer d) Greedy method
Last Answer : Which of the following algorithm design technique is used in the quick sort algorithm? a) Dynamic programming b) Backtracking c) Divide-and-conquer d) Greedy method
Description : What is the output of the following code? a={1:"A",2:"B",3:"C"} b={4:"D",5:"E"} a.update(b) print(a) a) {1: ‘A’, 2: ‘B’, 3: ‘C’} b) Method update() doesn’t exist for dictionaries c) {1: ‘A’, 2: ‘B’, 3: ‘C’, 4: ‘D’, 5: ‘E’} d) {4: ‘D’, 5: ‘E’}
Last Answer : c) {1: ‘A’, 2: ‘B’, 3: ‘C’, 4: ‘D’, 5: ‘E’}
Description : What is the output of the following code? a={1:"A",2:"B",3:"C"} print(a.setdefault(3)) a) {1: ‘A’, 2: ‘B’, 3: ‘C’} b) C c) {1: 3, 2: 3, 3: 3} d) No method called setdefault() exists for dictionary
Last Answer : b) C
Description : What is the output of the following code? >>> a=(2,3,4) >>> sum(a,3) a) Too many arguments for sum() method b) The method sum() doesn’t exist for tuples c) 12 d) 9
Last Answer : c) 12
Description : The total transportation cost in an initial basic feasible solution to the following transportation problem using Vogel’s Approximation method is (A) 76 (B) 80 (C) 90 (D) 96
Last Answer : (B) 80
Description : At any iteration of simplex method, if Δj (Zj – Cj) corresponding to any nonbasic variable Xj is obtained as zero, the solution under the test is (A) Degenerate solution (B) Unbounded solution (C) Alternative solution (D) Optimal solution
Last Answer : (C) Alternative solution
Description : Equivalence partitioning is a .................. method that divides the input domain of a program into classes of data from which test cases can be derived. (A) White-box testing (B) Black-box testing (C) Orthogonal array testing (D) Stress testing
Last Answer : (B) Black-box testing
Description : The syntax of capturing events method for document object is (A) CaptureEvents() (B) CaptureEvents(Orgs eventType) (C) CaptureEvents(eventType) (D) CaptureEvents(eventVal)
Last Answer : (C) CaptureEvents(eventType)
Description : Beam-penetration and shadow-mask are the two basic techniques for producing color displays with a CRT. Which of the following is not true ? I. The beam-penetration is used with random scan monitors. II. Shadow-mask is used ... -penetration method. (A) I and II (B) II and III (C) III only (D) IV only
Last Answer : (C) III only
Description : You have to sort a list L, consisting of a sorted list followed by a few ‘random’ elements. Which of the following sorting method would be most suitable for such a task ? (A) Bubble sort (B) Selection sort (C) Quick sort (D) Insertion sort
Last Answer : (D) Insertion sort
Description : Consider the following transportation problem: The initial basic feasible solution of the above transportation problem using Vogel's Approximation Method(VAM) is given below: The solution of the ... degenerate solution (B) is optimum solution (C) needs to improve (D) is infeasible solution
Last Answer : (B) is optimum solution
Description : In the Hungarian method for solving assignment problem, an optimal assignment requires that the maximum number of lines that can be drawn through squares with zero opportunity cost be equal to the number of: (A) rows or columns (B) rows+columns (C) rows+columns-1 (D) rows+columns+1
Last Answer : (A) rows or columns
Description : In ............ allocation method for disk block allocation in a file system, insertion and deletion of blocks in a file is easy. (A) Index (B) Linked (C) Contiguous (D) Bit Map
Last Answer : (B) Linked
Description : The Servlet Response interface enables a servlet to formulate a response for a client using the method ............... (A) void log(Exception e, String s) (B) void destroy() (C) int getServerPort() (D) void setContextType(String Type)
Last Answer : (D) void setContextType(String Type)
Description : Which one of the following statements is incorrect ? (A) Pareto analysis is a statistical method used for analyzing causes, and is one of the primary tools for quality management. (B) Reliability of ... (D) In white-box testing, the test cases are decided from the specifications or the requirements.
Last Answer : (D) In white-box testing, the test cases are decided from the specifications or the requirements.
Description : Consider the following transportation problem : The transportation cost in the initial basic feasible solution of the above transportation problem using Vogel’s Approximation method is : (A) 1450 (B) 1465 (C) 1480 (D) 1520
Last Answer : (B) 1465
Description : As compared to rental and leasing methods to acquire computer systems for a Management Information System (MIS), purchase method has following advantage : (A) It has high level of flexibility (B) It doesn’t require cash up-front (C) It is a business investment (D) Little risk of obsolescence
Last Answer : (C) It is a business investment