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More Computer Networks Related questions:
Parity bit is
Options: an error-detecting code based on a summation operation performed on the bits to be checked., a check bit appended to an array of binary digits to make the sum of all the binary digits., a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the errors in detected, the ratio of the number of data units in error to the total number of data units
Options: constructs packets of data and sends them across the network, Â Â controls error detection and correction, Â Â defines the electrical characteristics of signals passed between the computer and communication devices, Â Â All of the above
Options: Open Find and Replace Dialog box with activating Find Tab
B. Open Page Setup Dialog box with activating Layout Tab
C. Open Font Dialog Box with activating Font tab
D. Open File Save as Dialog box
Ans:– A ,
. Which command will be used to display a file within the specified directory of pathname?
Options: a . Dir pathname b . Dir pathnamepathname c. Dir/ch d. Dir pathnamefilename
A supertype/subtype hierarchy has which of the following features?
Options: Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype., Attributes are assigned at the highest logical level., Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype., Attributes are assigned at the lowest logical level.
Options: a. Do not enter a value in the foreign key field of a child table if that value does not exist in the primary key of the parent table
b. Do not enter a value in the primary key field of chield table if that value does not exist in the primary key of the parent table
c. Do not enter a value in the foreign key field of a parent table if that value does not exist in the primary key of the child table
d. All of above