Stack is also called as A) Last in first out B) First in last out C) Last in last out D) First in first out

Stack is also called as
A) Last in first out
B) First in last out
C) Last in last out
D) First in first out
by

1 Answer

Answer :

A) Last in first out
by

Related questions

Inserting an item into the stack when stack is not full is called …………. Operation and deletion of item form the stack, when stack is not empty is called ………..operation. A) push, pop B) pop, push

Description : Inserting an item into the stack when stack is not full is called …………. Operation and deletion of item form the stack, when stack is not empty is called ………..operation. A) push, pop B) pop, push

Last Answer : A) push, pop

................ is used in game trees to reduce the number of branches of the search tree to be traversed without affecting the solution. (A) Best first search (B) Goal stack planning (C) Alpha-beta pruning procedure (D) Min-max search

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Last Answer : (C) Alpha-beta pruning procedure

What is a stack? State it’s application.

Description : What is a stack? State it’s application.

Last Answer : A: It is a linear data structure which follows the LIFO (Last In First out) pattern. Stack memory is used in recursion. Application: It can be used for reversing strings, for evaluating postfix expressions.

The typical elements of process image are ..................... i) User data ii) System Data iii) User program iv) System stack A) i, iii and iv only B) i, ii, and iv only C) ii, iii, and iv only D) All i, ii, iii, and iv

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Last Answer : A) i, iii and iv only

What will be the value of top, if there is a size of stack STACK_SIZE is 5 A) 5 B) 6 C) 4 D) None

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………… is very useful in situation when data have to stored and then retrieved in reverse order. A) Stack B) Queue C) List D) Link list

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Last Answer : A) Stack

……………. Is a pile in which items are added at one end and removed from the other. A) Stack B) Queue C) List D) None of the above

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Last Answer : B) Queue

A thread is usually defined as a light weight process because an Operating System (OS) maintains smaller data structure for a thread than for a process. In relation to this, which of the following statement is correct? (A) OS maintains only scheduling and accounting information for each thread. (B) OS maintains only CPU registers for each thread. (C) OS does not maintain a separate stack for each thread. (D) OS does not maintain virtual memory state for each thread.

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A specific editor has 200 K of program text, 15 K of initial stack, 50 K of initialized data, and 70 K of bootstrap code. If five editors are started simultaneously, how much physical memory is needed if shared text is used ? (A) 1135 K (B) 335 K (C) 1065 K (D) 320 K

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Last Answer : (B) 335 K

The Unix Kernel maintains two key data structures related to processes, the process table and the user structure. Which of following information is not the part of user structure? (A) File descriptor table (B) System call state (C) Scheduling parameters (D) Kernel stack

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In UNIX operating system, when a process creates a new process using the fork() system call, which of the following state is shared between the parent process and child process? (A) Heap (B) Stack (C) Shared memory segments (D) Both Heap and Stack

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Last Answer : (C) (iii) (i) (iv) (ii) 

Which of the following is not an inherent application of stack? (A) Implementation of Stack (B) Evaluation of a postfix expression (C) Job Scheduling (D) Reverse a string

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Last Answer : (B) Stack operations are performed smoothly

Consider the following statements : S1: A queue can be implemented using two stacks. S2: A stack can be implemented using two queues. Which of the following is correct ? (A) S1 is correct and S2 is not correct. (B) S1 is not correct and S2 is correct. (C) Both S1 and S2 are correct. (D) Both S1 and S2 are not correct.

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The seven elements A, B, C, D, E, F and G are pushed onto a stack in reverse order, i.e., starting from G. The stack is popped five times and each element is inserted into a queue. Two elements are deleted from the queue and pushed back onto the stack. Now, one element is popped from the stack. The popped item is ................... (1) A (2) B (3) F (4) G

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Last Answer : Answer: 2

This refers to an area in the memory used for temporary storage of information on the basis of “Last in First out”. A. Core B. Register C. Flag.D. Stack

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Identify the LIFO (Last In First Out) structure among the following: (1) Stack (2) Queue (3) De-queue (4) Array

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First made but last gone. Always at the bottom of the stack. What am I? -Riddles

Description : First made but last gone. Always at the bottom of the stack. What am I? -Riddles

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Which of the following is true about the static member variable in C++. i) It is initialized to zero when the first object of its class is created. Other initialization is also permitted. ii) It is visible only within the class, but its lifetime is the entire program. A) i-True, ii-True B) ii-False, ii-True C) i-True, ii-False D) i-False, iii-False

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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. iv) We cannot refer their address. v) Constructors cannot virtual. A) Only i, ii, iii and v B) Only ii, iii, iv, and v C) Only i, iii, iv and v D) All i, ii, iii, iv and v

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State true or false i) A candidate key is a minimal super key. ii) A candidate key can also refer to as surrogate key. A) i-true, ii-false B) i-false, ii-true C) i-true, ii-true D) i-false, ii-false

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Last Answer : d) string.lowercase_string.upercase

Given the following statements : S1 : If L is a regular language then the language {uv | uϵL, vϵLR} is also regular. S2 : L = {wwR} is regular language. Which of the following is true ? (A) S1 is not correct and S2 is not correct. (B) S1 is not correct and S2 is correct. (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Description : Given the following statements : S1 : If L is a regular language then the language {uv | uϵL, vϵLR} is also regular. S2 : L = {wwR} is regular language. Which of the following is true ? (A) S1 is not ... S2 is correct. (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Last Answer : (C) S1 is correct and S2 is not correct.

Given the following two statements: S1: If L1 and L2 are recursively enumerable languages over ∑, then L1⋃L2 and L1⋂L2 are also recursively enumerable. S2: The set of recursively enumerable languages is countable. Which of the following is correct? (A) S1 is correct and S2 is not correct (B) S1 is not correct and S2 is correct (C) Both S1 and S2 are not correct (D) Both S1 and S2 are correct

Description : Given the following two statements: S1: If L1 and L2 are recursively enumerable languages over ∑, then L1⋃L2 and L1⋂L2 are also recursively enumerable. S2: The set of recursively enumerable languages is countable. ... correct (C) Both S1 and S2 are not correct (D) Both S1 and S2 are correct

Last Answer : (D) Both S1 and S2 are correct

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 a software specifies the probability of failure-free operation of that software for a given time duration. (C) The reliability of a system can also be specified as the Mean Time To Failure (MTTF). (D) In white-box testing, the test cases are decided from the specifications or the requirements.

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Last Answer : (D) In white-box testing, the test cases are decided from the specifications or the requirements.

Suppose that the number of instructions executed between page faults is directly proportional to the number of page frames allocated to a program. If the available memory is doubled, the mean interval between page faults is also doubled. Further, consider that a normal instruction takes one micro second, but if a page fault occurs, it takes 2001 micro seconds. If a program takes 60 sec to run, during which time it gets 15000 page faults, how long would it take to run if twice as much memory were available? (A) 60 sec (B) 30 sec (C) 45 sec (D) 10 sec

Description : Suppose that the number of instructions executed between page faults is directly proportional to the number of page frames allocated to a program. If the available memory is doubled, the mean interval between page faults is also ... memory were available? (A) 60 sec (B) 30 sec (C) 45 sec (D) 10 sec

Last Answer : Answer: C Explanation: T = Ninstr x 1µs + 15,000 x 2,000 µs = 60s Ninstr x 1µs = 60,000,000 µs - 30,000,000 µs = 30,000,000 µs Ninstr = 30,000,000 The number of instruction ... doesn't mean that the program runs twice as fast as on the first system. Here, the performance increase is of 25%.

Which of the following statements concerning Object-Oriented databases is FALSE? (A) Objects in an object-oriented database contain not only data but also methods for processing the data. (B) Object-oriented databases store computational instructions in the same place as the data. (C) Object-oriented databases are more adapt at handling structures (analytical) data than relational databases. (D) Object-oriented databases store more types of data than relational databases and access that data faster.

Description : Which of the following statements concerning Object-Oriented databases is FALSE? (A) Objects in an object-oriented database contain not only data but also methods for processing the data. (B ... Object-oriented databases store more types of data than relational databases and access that data faster.

Last Answer : (C) Object-oriented databases are more adapt at handling structures (analytical) data than relational databases.

Consider the following two commands C1 and C2 on the relation R from an SQL database: C1: drop table R; C2: delete from R; Which of the following statements is TRUE? I. Both C1 and C2 delete the schema for R. II. C2 retains relation R, but deletes all tuples in R. III. C1 deletes not only all tuples of R, but also the schema for R. (A) I only (B) I and II only (C) II and III only (D) I, II and III

Description : Consider the following two commands C1 and C2 on the relation R from an SQL database:  C1: drop table R; C2: delete from R; Which of the following statements is TRUE? I. Both C1 and C2 delete the schema for R. II. C2 ... R. (A) I only (B) I and II only (C) II and III only (D) I, II and III

Last Answer : (C) II and III only

In 3G network, W-CDMA is also known as UMTS. The minimum spectrum allocation required for W-CDMA is .......... (1) 2 MHz (2) 20 KHz (3) 5 KHz (4) 5 MHz

Description : In 3G network, W-CDMA is also known as UMTS. The minimum spectrum allocation required for W-CDMA is .......... (1) 2 MHz (2) 20 KHz (3) 5 KHz (4) 5 MHz

Last Answer : Answer: 4

Consider an implementation of unsorted single linked list. Suppose it has its representation with a head and a tail pointer (i.e. pointers to the first and last nodes of the linked list). Given the representation, which of the following operation cannot be implemented in O(1) time ? (A) Insertion at the front of the linked list. (B) Insertion at the end of the linked list. (C) Deletion of the front node of the linked list. (D) Deletion of the last node of the linked list.

Description : Consider an implementation of unsorted single linked list. Suppose it has its representation with a head and a tail pointer (i.e. pointers to the first and last nodes of the linked list). Given the ... the front node of the linked list. (D) Deletion of the last node of the linked list.

Last Answer : (D) Deletion of the last node of the linked list. 

Data Integrity control uses ................ (A) Upper and lower limits on numeric data. (B) Passwords to prohibit unauthorised access to files. (C) Data dictionary to keep the data (D) Data dictionary to find last access of data

Description : Data Integrity control uses ................ (A) Upper and lower limits on numeric data. (B) Passwords to prohibit unauthorised access to files. (C) Data dictionary to keep the data (D) Data dictionary to find last access of data

Last Answer : (B) Passwords to prohibit unauthorised access to files.

The average case occurs in the Linear Search Algorithm when: (A) The item to be searched is in some where middle of the Array (B) The item to be searched is not in the array (C) The item to be searched is in the last of the array (D) The item to be searched is either in the last or not in the array

Description : The average case occurs in the Linear Search Algorithm when: (A) The item to be searched is in some where middle of the Array (B) The item to be searched is not in the array (C) The item to be searched is in the last of the array (D) The item to be searched is either in the last or not in the array

Last Answer : (A) The item to be searched is in some where middle of the Array

Pick out the wrong statement. (A) High concentration of oxygen in flue gas means high stack loss (B) Gaseous fuels require the least % excess air for complete combustion (C) The ratio of fixed carbon to volatile matter percentage in coal is called its 'fuel ratio' (D) Calorific value of natural gas is more than that of LPG

Description : Pick out the wrong statement. (A) High concentration of oxygen in flue gas means high stack loss (B) Gaseous fuels require the least % excess air for complete combustion (C) The ratio of fixed carbon to ... coal is called its 'fuel ratio' (D) Calorific value of natural gas is more than that of LPG

Last Answer : (D) Calorific value of natural gas is more than that of LPG

When subroutine is called contents of program counter is location address of __ instruction following call instruction is stored on _ __and program execution is transferred to __ address. a. Non executable, pointer and subroutine b. Executable, Stack and Main program Cc. Executable, Queue and Subroutine d. Executable, Stack and Subroutine

Description : When subroutine is called contents of program counter is location address of __ instruction following call instruction is stored on _ __and program execution is transferred to __ address. a. Non ... , Stack and Main program Cc. Executable, Queue and Subroutine d. Executable, Stack and Subroutine

Last Answer : d. Executable, Stack and Subroutine

A list of protocols used by a system, one protocol per layer, is called ________ a) protocol architecture b) protocol stack c) protocol suite d) protocol system

Description : A list of protocols used by a system, one protocol per layer, is called ________ a) protocol architecture b) protocol stack c) protocol suite d) protocol system

Last Answer : b) protocol stack