# Recent activity 1
A relation $R$ is defined on the set of integers as $xRy$ iff $(x + y)$ is even. Which of the following statements is true? $R$ is not an equivalence relation $R$ is an equivalence relation having 1 equivalence class $R$ is an equivalence relation having 2 equivalence classes $R$ is an equivalence relation having 3 equivalence classes
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The process of removing details from a given state representation is called _____ Extraction Mining Selection Abstraction
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Comprehension: For the question given below: concern a disk with a sector size of $512$ bytes, $2000$ tracks per surface, $50$ sectors per track, five double-sided platters, and average seek time of $10$ milliseconds. If $T$ is the capacity of a track in bytes, and $S$ is the capacity of each surface in ... $(T,S)=$ _______ $(50 K, 50000 K)$ $(25 K, 25000 K)$ $(25 K, 50000 K)$ $(40 K, 36000 K)$
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Comprehension: For the question given below: concern a disk with a sector size of $512$ bytes, $2000$ tracks per surface, $50$ sectors per track, five double-sided platters, and average seek time of $10$ milliseconds. Given below are two statements: Statement $I$: The ... $II$ are false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Comprehension: For the question given below: concern a disk with a sector size of $512$ bytes, $2000$ tracks per surface, $50$ sectors per track, five double-sided platters, and average seek time of $10$ milliseconds. What is the capacity of the disk, in bytes? $25,000 K$ $500,000 K$ $250,000 K$ $50,000 K$
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For the question given below, concern a disk with a sector size of $512$ bytes, $2000$ tracks per surface, $50$ sectors per track, five double-sided platters, and average seek time of $10$ milliseconds. If one track of data can be transferred per revolution, then what is the data transfer rate? $2,850$ KBytes/second $4,500$ KBytes/second $5,700$ KBytes/second $2,250$ KBytes/second
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Comprehension: For the question given below, concern a disk with a sector size of $512$ bytes, $2000$ tracks per surface, $50$ sectors per track, five double-sided platters, and average seek time of $10$ milliseconds. If the disk platters rotate at $5400$ rpm ( ... minute), then approximately what is the maximum rotational delay? $0.011$ seconds $0.11$ seconds $0.0011$ seconds $1.1$ seconds
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Consider the following table structures related to a university for the below question. EMPLOYEE NAME VARCHAR (30) NOT NULL, EID VARCHAR (10) NOT NULL, DEPTNO INT (5) NOT NULL, HODEID VARCHAR (10), SALARY INT (10), PRIMARY KEY (EID), FOREIGN KEY (HODEID) REFERENCES EMPLOYEE (EID), FOREIGN ... correct answer from the options given below: $a$ and $b$ only $a$ and $c$ only $b$ and $c$ only $a$ only
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Consider the following table structures related to a university for the below question. EMPLOYEE NAME VARCHAR (30) NOT NULL, EID VARCHAR (10) NOT NULL, DEPTNO INT (5) NOT NULL, HODEID VARCHAR (10), SALARY INT (10), PRIMARY KEY (EID), FOREIGN KEY (HODEID) REFERENCES EMPLOYEE (EID), ... EID Choose the correct answer from the options given below: $a$ and $b$ only $a$ and $c$ only $b$ only $c$ only
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Consider the following table structures related to a university for the below question. EMPLOYEE NAME VARCHAR (30) NOT NULL, EID VARCHAR (10) NOT NULL, DEPTNO INT (5) NOT NULL, HODEID VARCHAR (10), SALARY INT (10), PRIMARY KEY (EID), FOREIGN KEY (HODEID) REFERENCES ... $II$ are false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Consider the following table structures related to a university for the below question. EMPLOYEE NAME VARCHAR (30) NOT NULL, EID VARCHAR (10) NOT NULL, DEPTNO INT (5) NOT NULL, HODEID VARCHAR (10), SALARY INT (10), PRIMARY KEY (EID), FOREIGN KEY (HODEID) REFERENCES EMPLOYEE (EID), ... ) Choose the correct answer from the options given below: $a$ and $b$ only $a$ only $b$ and $c$ only $c$ only
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Consider the following table structures related to a university for the below question. EMPLOYEE NAME VARCHAR (30) NOT NULL, EID VARCHAR (10) NOT NULL, DEPTNO INT (5) NOT NULL, HODEID VARCHAR (10), SALARY INT (10), PRIMARY KEY (EID), FOREIGN KEY (HODEID) ... 20,30,40); SELECT DISTINCT EMPID FROM PROJECTWORK WHERE PROJNO IN(20,30,40); SELECT DISTINCT EMPID FROM PROJECTWORK WHERE PROJNO=20,30,40;
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Given below are two statements: Statement $I$: Hardwired control unit can be optimized to produce fast mode of operation Statement $II$: Indirect addressing mode needs two memory reference to fetch operand In the light of the above statements, choose the correct answer from the ... are false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Given below are two statements: Statement $I$: Bezier curves are curves that interpolate all of their control points Statement $II$: A cubic bezier curve has four control points In the light of the above statements, choose the correct answer from the options given below Both ... $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Statement $I$: Quality control involves the series of inspections, reviews and tests used throughout the software process, to ensure each work product meets the requirements placed upon it. Statement $II$: Quality assurance consists of auditing and reporting functions of management ... false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Assuming that the system call $\text{fork}()$ never fails, consider the following C program $P1$ and $P2$ ... Both Statement $I$ and Statement $II$ are false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Given below are two statements: If two variables $V_1$ and $V_2$ are used for clustering, then consider the following statements for $k$ means clustering with $k=3$: Statement $I$: If $V_1$ and $V_2$ have correlation of $1$ the cluster centroid will be in straight ... Statement $II$ are false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Given below are two statements: Statement $I$: The problem Is $L_1 \wedge L_2 = \phi$? is undecidable for context sensitive languages $L_1$ and $L_2$ Statement $II$: The problem Is $W \in L$? is decidable for context sensitive language $L$. (where $W$ is ... $II$ are false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Let $G$ be a simple undirected graph, $T_D$ be a DFS tree on $G$, and $T_B$ be the BFS tree on $G$. Consider the following statements. Statement $I$: No edge of $G$ is a cross with respect to $T_D$ Statement $II$: For every edge $(u,v)$ of $G$ ... Statement $I$ and Statement $II$ are false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Given below are two statements: Statement $I$: In Ceasar Cipher each letter of Plain text is replaced by another letter for encryption Statement $II$: Diffie-Hellman algorithm is used for exchange of secret key In the light of the above statements, choose the correct answer ... $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Given below are two statements: Statement $I$: A genetic algorithm is a stochastic hill-climbing search in which a large population of states is maintained Statement $II$: In nondeterministic environments, agents can apply AND-OR search to generate contingent plans that reach the ... false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Given below are two statements: Statement $I$: The laws of nature put two fundamental limits on data rate of a channel. The H.Nyquist limit restricts the number of independent samples per second to twice the band-width in a Noiseless channel Statement $II$: Shannon's major ... $II$ are false Statement $I$ is correct but Statement $II$ is false Statement $I$ is incorrect but Statement $II$ is true
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Consider the following languages: $L_1=\{a^{\grave{z}^z} \mid \grave{Z} \text{ is an integer} \}$ $L_2=\{a^{z\grave{z}} \mid \grave{Z} \geq 0\}$ $L_3=\{ \omega \omega \mid \omega \epsilon \{a,b\}^*\}$ Which of the languages is(are) regular? Choose the correct answer from the options given below: $L_1$ and $L_2$ only $L_1$ and $L_3$ only $L_1$ only $L_2$ only
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Consider the undirected graph below: Using Prim's algorithm to construct a minimum spanning tree starting with node $a$ ... $(a,b), (g,h), (g,f), (c,f), (c,i), (f,e), (b,c), (d,e)$
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Arrange the following types of Cohesion from the best to worst type. Logical Cohesion Sequential Cohesion Communication Cohesion Temporal Cohesion Procedural Cohesion Choose the correct answer from the options given below: ... $b \rightarrow c \rightarrow e \rightarrow d \rightarrow a$
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Given below are different properties of $3D$ projections from $A-D$. Identify the correct order on the basis of property true of $(i)$ a perspective projection only, $(ii)$ an orthographic projection only, $(iii)$ both orthographic and projective transformations and $(iv)$ neither ... transformation Choose the correct answer from the options given below: d,c,b,a b,c,d,a d,c,a,b c,d,b,a
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Given below are two statements: Statement $I$: $5$ divides $n^5-n$ wherever $n$ is a nonnegative integer Statement $II$: $6$ divides $n^3-n$ whenever $n$ is a nonnegative integer In the light of the above statements, choose the correct answer from the ... Statement $II$ are incorrect Statement $I$ is correct but Statement $II$ is incorrect Statement $I$ is incorrect but Statement $II$ is correct
Consider the following regular expressions: $r=a(b+a)^*$ $s=a(a+b)^*$ $t=aa^*b$ Choose the correct answer from the options given below based on the relation between the languages generated by the regular expressions above: $L(r) \subseteq L(s) \subseteq L(t)$ $L(r) \supseteq L(s) \supseteq L(t)$ $L(r) \supseteq L(t) \supseteq L(s)$ $L(s) \supseteq L(t) \supseteq L(r)$
Consider $L=L_1 \cap L_2$ where $L_1 = \{ 0^m 1^m 20^n 1^n \mid m,n \geq 0 \}$ $L_2 = \{0^m1^n2^k \mid m,n,k \geq 0 \}$ Then, the language $L$ is Recursively enumerable but not context free Regular Context free but not regular Not recursive
Which of the following statements are true? A sentence $\alpha$ entails another sentence $\beta$ if $\beta$ is true in few worlds where $\alpha$ is true Forward chaining and backward chaining are very natural reasoning algorithms for knowledge bases in Horn form Sound inference algorithms derive all sentences that are ... $(b)$ only $(b)$ and $(c)$ only $(c)$ and $(d)$ only $(b)$ and $(d)$ only