Why is the ‘S’ of String capital?

Why is the ‘S’ of String capital?
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1 Answer

Answer :

A: Since String is a class.
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Which is the correct statement(s) for Non Recursive predictive parser? S1: First(α) = {t | α => * t β for some string β } => *tβ S2: Follow(X) = { a | S => * αXa β for some strings α and β } (A) Both statements S1 and S2 are incorrect. (B) S1 is incorrect and S2 is correct. (C) S1 is correct and S2 is incorrect. (D) Both statements S1 and S2 are correct.

Description : Which is the correct statement(s) for Non Recursive predictive parser? S1: First(α) = {t | α => * t β for some string β } => *tβ S2: Follow(X) = { a | S => * αXa β for some strings ... and S2 is correct. (C) S1 is correct and S2 is incorrect. (D) Both statements S1 and S2 are correct. 

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

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)

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)

Which of the following is FALSE ? (A) The grammar S ⟶ aSb|bSa|SS|∈, where S is the only non-terminal symbol and ∈ is the null string, is ambiguous. (B) SLR is powerful than LALR. (C) An LL(1) parser is a top-down parser. (D) YACC tool is an LALR(1) parser generator.

Description : Which of the following is FALSE ? (A) The grammar S ⟶ aSb|bSa|SS|∈, where S is the only non-terminal symbol and ∈ is the null string, is ambiguous. (B) SLR is powerful than LALR. (C) An LL(1) parser is a top-down parser. (D) YACC tool is an LALR(1) parser generator.

Last Answer : (B) SLR is powerful than LALR.

In a relational database model, NULL values can be used for all but which one of the following? (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL. (B) To avoid confusion with actual legitimate data values like 0 (zero) for integer columns and ‘’ (the empty string) for string columns. (C) To leave columns in a tuple marked as “unknown” when the actual value is unknown. (D) To fill a column in a tuple when that column does not really “exist” for that particular tuple.

Description : In a relational database model, NULL values can be used for all but which one of the following? (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL. (B) To ... D) To fill a column in a tuple when that column does not really exist for that particular tuple.

Last Answer : (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL.

In what way is a file more flexible than a String?

Description : In what way is a file more flexible than a String?

Last Answer : Ans: A file is stored permanently in a storage device.It is easy to access a file whenever required. On the other hand, a string is stored temporarily in RAM, and the contents of a string will be erased automatically when the power is switched off or when the program execution is terminated.

Is it compulsory to write String args[] when running a program in BlueJ?

Description : Is it compulsory to write String args[] when running a program in BlueJ?

Last Answer : A: No it is not compulsory when we are running it in BlueJ. But normally (in all other cases) it is always better to have it, as the JVM looks for the main method with a String array as a parameter.

Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters? A. cat emp[!0-9] B. more [emp][!0-9] C. cat emp[x-z]

Description : Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters? A. cat emp[!0-9] B. more [emp][!0-9] C. cat emp[x-z]

Last Answer : A. cat emp[!0-9]

Which command is used to change protection mode of files starting with the string emp and ending with 1,2, or 3? A. chmod u+x emp[l-3] B. chmod 777 emp* C. chmod u+r ??? emp D. chmod 222 emp? E. None of the above

Description : Which command is used to change protection mode of files starting with the string emp and ending with 1,2, or 3? A. chmod u+x emp[l-3] B. chmod 777 emp* C. chmod u+r ??? emp D. chmod 222 emp? E. None of the above

Last Answer : A. chmod u+x emp[l-3]

Which command is used to copy all files having the string chap and any two characters after that to the progs directory? A. cp chap?? progs B. cp chap* progs C. cp chap[12] /progs/*.*

Description : Which command is used to copy all files having the string chap and any two characters after that to the progs directory? A. cp chap?? progs B. cp chap* progs C. cp chap[12] /progs/*.*

Last Answer : A. cp chap?? progs

In java, string is a ............. A) primitive data type B) abstract data type C) combination of boolean D) None of the above

Description : In java, string is a ............. A) primitive data type B) abstract data type C) combination of boolean D) None of the above

Last Answer : B) abstract data type

Which of the following methods belong to the string class? A) length( ) B) compare To ( ) C) equals ( ) D) All of them

Description : Which of the following methods belong to the string class? A) length( ) B) compare To ( ) C) equals ( ) D) All of them

Last Answer : D) All of them

Which of the following methods belong to the string class? A) length( ) B) compare To ( ) C) equals ( ) D) All of them

Description : Which of the following methods belong to the string class? A) length( ) B) compare To ( ) C) equals ( ) D) All of them

Last Answer : D) All of them

The class string belongs to ................... package. A) java.awt B) java.lang C) java.applet D) java.string

Description : The class string belongs to ................... package. A) java.awt B) java.lang C) java.applet D) java.string

Last Answer : B) java.lang

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

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

………… function writes a string of text to a window. A) cputs () B) put () C) gets () D) tputs ()

Description : ………… function writes a string of text to a window. A) cputs () B) put () C) gets () D) tputs ()

Last Answer : A) cputs ()

The ..................... is essentially used to search for patterns in target string. A) Like Predicate B) Null Predicate C) In Predicate D) Out Predicate

Description : The ..................... is essentially used to search for patterns in target string. A) Like Predicate B) Null Predicate C) In Predicate D) Out Predicate

Last Answer : A) Like Predicate

Data items grouped together for storage purposes are called a A) record B) title C) list D) string

Description : Data items grouped together for storage purposes are called a A) record B) title C) list D) string

Last Answer : A) record

To remove string “hello” from list1, we use which command ? a) list1.remove(“hello”) b) list1.remove(hello) c) list1.removeAll(“hello”) d) list1.removeOne(“hello”)

Description : To remove string “hello” from list1, we use which command ? a) list1.remove(“hello”) b) list1.remove(hello) c) list1.removeAll(“hello”) d) list1.removeOne(“hello”)

Last Answer : d) list1.removeOne(“hello”)

The output of executing string.ascii_letters can also be achieved by: a) string.ascii_lowercase_string.digits b) string.ascii_lowercase+string.ascii_upercase c) string.letters d) string.lowercase_string.upercase

Description : The output of executing string.ascii_letters can also be achieved by: a) string.ascii_lowercase_string.digits b) string.ascii_lowercase+string.ascii_upercase c) string.letters d) string.lowercase_string.upercase

Last Answer : d) string.lowercase_string.upercase

Which of the following derivations does a top-down parser use while parsing an input string ? The input is scanned from left to right. (A) Leftmost derivation (B) Leftmost derivation traced out in reverse (C) Rightmost derivation traced out in reverse (D) Rightmost derivation

Description : Which of the following derivations does a top-down parser use while parsing an input string ? The input is scanned from left to right. (A) Leftmost derivation (B) Leftmost derivation traced out in reverse (C) Rightmost derivation traced out in reverse (D) Rightmost derivation

Last Answer : (A) Leftmost derivation

Consider a program that consists of 8 pages (from 0 to 7) and we have 4 page frames in the physical memory for the pages. The page reference string is : 1 2 3 2 5 6 3 4 6 3 7 3 1 5 3 6 3 4 2 4 3 4 5 1 The number of page faults in LRU and optimal page replacement algorithms are respectively (without including initial page faults to fill available page frames with pages): (A) 9 and 6 (B) 10 and 7 (C) 9 and 7 (D) 10 and 6

Description : Consider a program that consists of 8 pages (from 0 to 7) and we have 4 page frames in the physical memory for the pages. The page reference string is :  1 2 3 2 5 6 3 4 6 3 7 3 1 5 3 6 3 4 2 4 3 4 5 ... to fill available page frames with pages): (A) 9 and 6 (B) 10 and 7 (C) 9 and 7 (D) 10 and 6

Last Answer : (B) 10 and 7

The control string in C++ consists of three important classifications of characters (A) Escape sequence characters, Format specifiers and Whitespace characters (B) Special characters, White-space characters and Non-white space characters (C) Format specifiers, White-space characters and Non-white space characters (D) Special characters, White-space characters and Format specifiers

Description : The control string in C++ consists of three important classifications of characters (A) Escape sequence characters, Format specifiers and Whitespace characters (B) Special characters, White-space ... and Non-white space characters (D) Special characters, White-space characters and Format specifiers

Last Answer : (C) Format specifiers, White-space characters and Non-white space characters

The process of dividing an analog signal into a string of discrete outputs, each of constant amplitude, is called: (A) Strobing (B) Amplification (C) Conditioning (D) Quantization

Description : The process of dividing an analog signal into a string of discrete outputs, each of constant amplitude, is called: (A) Strobing (B) Amplification (C) Conditioning (D) Quantization

Last Answer : (D) Quantization

What does the following command do? grep −vn “abc” x (A) It will print all of the lines in the file x that match the search string “abc” (B) It will print all of the lines in file x that do not match the search string “abc” (C) It will print total number of lines in the file x that match the search string “abc” (D) It will print the specific line numbers of the file x in which there is a match for string “abc”

Description : What does the following command do? grep −vn abc x (A) It will print all of the lines in the file x that match the search string abc (B) It will print all of the lines in file x that do not ... (D) It will print the specific line numbers of the file x in which there is a match for string abc

Last Answer : (A) It will print all of the lines in the file x that match the search string “abc”

A LRU page replacement is used with four page frames and eight pages. How many page faults will occur with the reference string 0172327103 if the four frames are initially empty? (A) 6 (B) 7 (C) 5 (D) 8

Description : A LRU page replacement is used with four page frames and eight pages. How many page faults will occur with the reference string 0172327103 if the four frames are initially empty? (A) 6 (B) 7 (C) 5 (D) 8

Last Answer : (B) 7

Consider the reference string 0 1 2 3 0 1 4 0 1 2 3 4 If FIFO page replacement algorithm is used, then the number of page faults with three page frames and four page frames are .......... and ........... respectively. (A) 10, 9 (B) 9, 9 (C) 10, 10 (D) 9, 10

Description : Consider the reference string 0 1 2 3 0 1 4 0 1 2 3 4 If FIFO page replacement algorithm is used, then the number of page faults with three page frames and four page frames are .......... and ........... respectively. (A) 10, 9 (B) 9, 9 (C) 10, 10 (D) 9, 10

Last Answer : (D) 9, 10

The number of strings of length 4 that are generated by the regular expression (0|∈) 1+2* (3|∈), where | is an alternation character, {+, *} are quantification characters, and ∈ is the null string, is: (A) 08 (B) 10 (C) 11 (D) 12

Description : The number of strings of length 4 that are generated by the regular expression (0|∈) 1+2* (3|∈), where | is an alternation character, {+, *} are quantification characters, and ∈ is the null string, is: (A) 08 (B) 10 (C) 11 (D) 12

Last Answer : (D) 12

In how many ways can the string A ∩ B - A ∩ B - A be fully parenthesized to yield an infix expression? (A) 15 (B) 14 (C) 13 (D) 12

Description : In how many ways can the string A ∩ B - A ∩ B - A be fully parenthesized to yield an infix expression? (A) 15 (B) 14 (C) 13 (D) 12

Last Answer : (B) 14

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

Description : 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

Last Answer : (C) Job Scheduling

In Data mining, .............. is a method of incremental conceptual clustering. (A) STRING (B) COBWEB (C) CORBA (D) OLAD

Description : In Data mining, .............. is a method of incremental conceptual clustering. (A) STRING (B) COBWEB (C) CORBA (D) OLAD

Last Answer : (B) COBWEB

Suppose that the virtual Address space has eight pages and physical memory with four page frames. If LRU page replacement algorithm is used, .............. number of page faults occur with the reference string. 0 2 1 3 5 4 6 3 7 4 7 3 3 5 5 3 1 1 1 7 2 3 4 1 (A) 11 (B) 12 (C) 10 (D) 9

Description : Suppose that the virtual Address space has eight pages and physical memory with four page frames. If LRU page replacement algorithm is used, .............. number of page faults occur with the reference string. 0 2 1 3 5 4 6 3 7 4 7 3 3 5 5 3 1 1 1 7 2 3 4 1 (A) 11 (B) 12 (C) 10 (D) 9

Last Answer : (A) 11

What is the probability that a randomly selected bit string of length 10 is a palindrome? (A) 1/64 (B) 1/32 (C) 1/8 (D) ¼

Description : What is the probability that a randomly selected bit string of length 10 is a palindrome? (A) 1/64 (B) 1/32 (C) 1/8 (D) ¼

Last Answer : (B) 1/32

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

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 

Why is the ‘S’ of System.out.println() function capital?

Description : Why is the ‘S’ of System.out.println() function capital?

Last Answer : A: System is the name of a class present in java,lang package and hence it begins with a capital letter as is the convention for class names.

Which of the following is FALSE in C? A) Keywords can be used as variable names B) Variable names can contain a digit C) Variable names do not contain a blank space D) Capital letters can be used in variables

Description : Which of the following is FALSE in C? A) Keywords can be used as variable names B) Variable names can contain a digit C) Variable names do not contain a blank space D) Capital letters can be used in variables

Last Answer : A) Keywords can be used as variable names

Consider a “CUSTOMERS” database table having a column “CITY” filled with all the names of Indian cities (in capital letters). The SQL statement that finds all cities that have “GAR” somewhere in its name, is: (A) Select *from customers where city=’%GAR%’; (B) Select *from customers where city=’$GAR$’; (C) Select *from customers where city like ‘%GAR%’; (D) Select *from customers where city as ’%GAR’;

Description : Consider a CUSTOMERS database table having a column CITY filled with all the names of Indian cities (in capital letters). The SQL statement that finds all cities that have GAR somewhere in its name, ... *from customers where city like %GAR%'; (D) Select *from customers where city as '%GAR';

Last Answer : Answer: C

Which of the following keys is used to replace a single character with new text? A. S B. s C. r D. C E. None of the above

Description : Which of the following keys is used to replace a single character with new text? A. S B. s C. r D. C E. None of the above

Last Answer : B. s

The type(s) of auto executing macros, in Microsoft word is/are A) Auto execute B) Auto macro C) Command macro D) All of the above

Description : The type(s) of auto executing macros, in Microsoft word is/are A) Auto execute B) Auto macro C) Command macro D) All of the above

Last Answer : D) All of the above

Which are the following is / are the level(s) of documentation? A) Documentation for management B) Documentation for user C) Documentation for data processing department D) All of the above

Description : Which are the following is / are the level(s) of documentation? A) Documentation for management B) Documentation for user C) Documentation for data processing department D) All of the above

Last Answer : D) All of the above

Which is/are the application(s) of stack A) Function calls B) Large number Arithmetic C) Evaluation of arithmetic expressions D) All of the above

Description : Which is/are the application(s) of stack A) Function calls B) Large number Arithmetic C) Evaluation of arithmetic expressions D) All of the above

Last Answer : D) All of the above

………… is another kind of fiber optic network with an active star for switching. A) S/NET B) SW/NET C) NET/SW D) FS/NE

Description : ………… is another kind of fiber optic network with an active star for switching. A) S/NET B) SW/NET C) NET/SW D) FS/NE

Last Answer : A) S/NET

………………….. is a collective term for a number of Ethernet Standards that carry traffic at the nominal rate of 1000 Mbit/s against the original Ethernet speed of 10 Mbit/s. A) Ethernet B) Fast Ethernet C) Gigabit Ethernet D) All of the above

Description : ………………….. is a collective term for a number of Ethernet Standards that carry traffic at the nominal rate of 1000 Mbit/s against the original Ethernet speed of 10 Mbit/s. A) Ethernet B) Fast Ethernet C) Gigabit Ethernet D) All of the above

Last Answer : B) Fast Ethernet

.............. is another kind of fiber optic network with active star for switching. A) S/NET B) SW/NET C) NET/SW D) FS/NET

Description : .............. is another kind of fiber optic network with active star for switching. A) S/NET B) SW/NET C) NET/SW D) FS/NET

Last Answer : A) S/NET

............ is a collective term for a number of Ethernet Standards that carry traffic at the nominal rate of 1000 Mbits/s against the original Ethernet speed of 10 Mbit/s. A) Ethernet B) Fast Ethernet C) Gigabit Ethernet D) All of the above

Description : ............ is a collective term for a number of Ethernet Standards that carry traffic at the nominal rate of 1000 Mbits/s against the original Ethernet speed of 10 Mbit/s. A) Ethernet B) Fast Ethernet C) Gigabit Ethernet D) All of the above

Last Answer : B) Fast Ethernet

What will be the output of the following segment of the program? main( ) { char *s = “hello world”; int i = 7; printf(“%, *s”, i, s); } (A) Syntax error (B) hello w (C) hello (D) o world

Description : What will be the output of the following segment of the program? main( ) { char *s = “hello world”; int i = 7; printf(“%, *s”, i, s); } (A) Syntax error (B) hello w (C) hello (D) o world

Last Answer : Answer: Marks given to all

A pushdown automation M = (Q, Σ, Γ, δ, q0, z, F) is set to be deterministic subject to which of the following condition(s), for every q ∈ Q, a ∈ Σ ∪ {λ} and b ∈ Γ (s1) δ(q, a, b) contains at most one element (s2) if δ(q, λ, b) is not empty then δ(q, c, b) must be empty for every c ∈ Σ (A) only s1 (B) only s2 (C) both s1 and s2 (D) neither s1 nor s2

Description : A pushdown automation M = (Q, Σ, Γ, δ, q0, z, F) is set to be deterministic subject to which of the following condition(s), for every q ∈ Q, a ∈ Σ ∪ {λ} and b ∈ Γ (s1) δ(q, a, b) contains at most one ... ) must be empty for every c ∈ Σ (A) only s1 (B) only s2 (C) both s1 and s2 (D) neither s1 nor s2

Last Answer : (C) both s1 and s2

The grammar with production rules S → aSb |SS|λ generates language L given by: (A) L = {w∈{a, b}* | na(w) = nb(w) and na(v) ≥ nb(v) where v is any prefix of w} (B) L = {w∈{a, b}* | na(w) = nb(w) and na(v) ≤ nb(v) where v is any prefix of w} (C) L = {w∈{a, b}* | na(w) ≠ nb(w) and na(v) ≥ nb(v) where v is any prefix of w} (D) L = {w∈{a, b}* | na(w) ≠ nb(w) and na(v) ≤ nb(v) where v is any prefix of w}

Description : The grammar with production rules S → aSb |SS|λ generates language L given by: (A) L = {w∈{a, b}* | na(w) = nb(w) and na(v) ≥ nb(v) where v is any prefix of w} (B) L = {w∈{a, b}* | na(w) = nb(w) and na(v ... (D) L = {w∈{a, b}* | na(w) ≠ nb(w) and na(v) ≤ nb(v) where v is any prefix of w}

Last Answer : (A) L = {w∈{a, b}* | na(w) = nb(w) and na(v) ≥ nb(v) where v is any prefix of w} 

Which of the following is/are the fundamental semantic model(s) of parameter passing? (A) in mode (B) out mode (C) in-out mode (D) all of the above

Description : Which of the following is/are the fundamental semantic model(s) of parameter passing? (A) in mode (B) out mode (C) in-out mode (D) all of the above

Last Answer : (D) all of the above

Which of the following statement(s) is(are) true? I. Two successive translations are additive. II. Two successive rotations are additive. III. Two successive scaling operations are multiplicative. (A) I and II (B) I and III (C) II and III (D) All the above.

Description : Which of the following statement(s) is(are) true? I. Two successive translations are additive. II. Two successive rotations are additive. III. Two successive scaling operations are multiplicative. (A) I and II (B) I and III (C) II and III (D) All the above.

Last Answer : (D) All the above.

Consider the table Student(stuid, name, course, marks). Which one of the following two queries is correct to find the highest marks student in course 5? Q.1. Select S.stuid From student S Where not exists (select * from student e where e course='5' and e marks ≥ s marks) Q.2. Select S.stuid From student S Where s.marks > any (select distinct marks from student S where s.couse = 5) (A) Q.1 (B) Q.2 (C) Both Q.1 and Q.2 (D) Neither Q.1 nor Q.2

Description : Consider the table Student(stuid, name, course, marks). Which one of the following two queries is correct to find the highest marks student in course 5? Q.1. Select S.stuid From student S Where not exists (select * from student ... ) Q.1 (B) Q.2 (C) Both Q.1 and Q.2 (D) Neither Q.1 nor Q.2

Last Answer : (B) Q.2 Explanation: First query gives stuid of students whose marks are greater than all students taking course 5. Second query gives stuid of students whose marks are greater than any student taking ... comparison is between maximum of marks by any student in course 5. So the answer is option D.