Which one of the following statements is true for current flowing in a parallel circuit?
Options: The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it, The same current always flows through every part of a parallel circuit, The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance, The total current in a parallel circuit is always less than the smallest amount of current
Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?
What does the port number in a TCP connection specify?
Options: It specifies the communication process on the two end systems
B. It specifies the quality of the data & connection
C. It specify the size of data
D. All of the above
Ans:– A ,
. Which of the following is true regarding Referential Integrity?
Options: Every primary-key value must match a primary-key value in an associated table
B. Every primary-key value must match a foreign-key value in an associated table
C. Every foreign-key value must match a primary-key value in an associated table
D. Every foreign-key value must match a foreign-key value in an associated table
Ans: â€“ C ,
Which of the declaration is correct?
Options: int length;, char int;, int long;, float double;
The memory address of fifth element of an array can be calculated by the formula
Options: a. LOC(Array=Base(Array)+w(5-lower bound), where w is the number of words per memory cell for the array b. LOC(Array)=Base(Array)+(5-lower bound), where w is the number of words per memory cell for the array c. LOC(Array)=Base(Array)+(5-Upper bound), where w is the number of words per memory cell for the array d. None of above
. Which of the following is a correct order of precedence in a formula calculation?
Options: a. Multiplication and division, exponential positive and negative value b. Multiplication and division, positive and negative values, addition and subtraction c. Addition and subtraction, positive and negative values, exponentiation d. None of above
When mapping a supertype/subtype relationship which of the following is true?
Options: The supertype primary key is assigned to each subtype., The subtype primary key is assigned to each supertype., There is no link between the supertype/subtype entities., There is no primary key/foreign key relationship between a supertype/subtype.
______________ is a classical approach to database design?
Options: Left – Right approach
B. Right – Left approach
C. Top – Down approach
D. Bottom – Up approach
Ans:– C ,
Which is true regarding EIGRP successor routes? A successor route is used by EIGRP to forward traffic to a destination. Successor routes are saved in the topology table to be used if the primary route fails. Successor routes are flagged as "active" in the routing table. A successor route may be backed up by a feasible successor route. Successor routes are stored in the neighbor table following the discovery process.
Which of the following is not true of office automation?
Options: It enhances office productivity., Human factors should be considered in implementing office automation., It will increase informal communications between employees., Software should be designed to be user-friendly