Options: a single program is processed by two or more CPUs, two or more programs are stored concurrently in primary storage, only the active pages of a program are stored in primary storage, interprogram interference may occur
Options: a. Foreign key fields don’t allow duplicate values
b. In primary key field you can enter duplicate value
c. In an indexed field you may or may not enter duplicate value depending upon setting
d. All statements are true
The research and development department at your office has been experimenting with different technologies to help improve the performance of the network. One group has been examining the use of a broadband network versus a based band network. Select the correct statement about broadband and baseband.
Options: Broadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channel, Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable, Baseband refers to local area networks, and broadband refers to wide area networks., Baseband operates at a standard bit rate, whereas broadband may operate at different rates as needed
Options: is a data item that moves from one module to another, is represented by a line joining two modules, means that the upper module has the capability of calling the lower module, none of the above
Which one of the following statements is true for current flowing in a series circuit?
Options: The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it, The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit, The same current flows through every part of a series circuit, The total current in a series circuit is equal to the total voltage multiplied by the total resistance
Options: to create a table, defining its columns, integrity constrains, and storage allocation, to add a column/integrity constraint to a table, to redefine a column, to change a table's storage characteristics
The difference between linear array and a record is
Options: a. An array is suitable for homogeneous data but the data items in a record may have different data type b. In a record, there may not be a natural ordering in opposed to linear array. c. A record form a hierarchical structure but a linear array does not d. All of above