In linear search algorithm the Worst case occurs when
Options: A)The item is somewhere in the middle of the array
b.The item is not in the array at all
c.The item is the last element in the array
d.The item is the last element in the array or is not there at all
The Token-Ring architecture was developed for a more efficient way to determine who should be transmitting at any one time. With Ethernet, collisions may take place, causing the transmitting computers to have to retransmit their data. The use of token guarantees that only one computer can transmit at a time. What happens as the network increases in size? Choose the best answer
Options: An additional token is added for every 1,000 nodes, The speed of the Token-Ring network must be 16Mbps if the number of nodes is greater then 500, The network becomes less efficient, After the number of nodes exceeds 550, the Multistation Access Unit must be replaced by the more powerful Hyperstation Unified Bandwidth device
Options: It sends back the protocol received from a router as a poison pill, which stops the regular updates., It is information received from a router that can't be sent back to the originating router., It prevents regular update messages from reinstating a route that has just come up., It describes when a router sets the metric for a downed link to infinity.
Options: consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen., is used for interactive Graphics, is expensive because it is sophisticated and make demands on the power and resources of the computer., All of the above
Options: a. Means do not change the value in the primary key field if that record has related records in another table
b. Means change all the related records in child tables if the record in parent table is changed
c. Both of above
d. None of above
Concurrency control is important for which of the following reasons?
Options: To ensure data integrity when updates occur to the database in a multiuser environment, To ensure data integrity when updates occur to the database in a single-user environment, To ensure data integrity while reading data occurs to the database in a multiuser environment, To ensure data integrity while reading data occurs to the database in a single-user environment
Options: a. You can type text directly into a PowerPoint slide but typing in text box is more convenient. b. From Insert menu choose Picture and then From File to insert your images into slides. c. You can display a PowerPoint presentation in Normal, Slide Sorter or Slide Show view. d. You can show or hide task pane from View >> Toolbars