Which of the following is correct regarding Aggregate functions?
Options: it takes a list of values and return a single values as result
B. it takes a list of values and return a list of values as result
C. it takes a single value and returns a list of values as result
D. it takes a single value and returns a single value as result
Ans:– A ,
A _____ means that one record in a particular record type may be related to more than one record of another record type.
Options: One-to-one relationship, One-to-many relationship, Many-to-one relationship, Many-to many relationship
Options: are more powerful then the first controllers on the market, are relatively low cost compared with the original digital equipment available for industrial control, can be cost effective even when replacing just a few relays, All of the above
You connect a host to a switch port, but the new host cannot log into the server that is plugged into the same switch. What could the problem be?
Options: The router is not configured for the new host., The VTP configuration on the switch is not updated for the new host., The host has an invalid MAC address., The switch port the host is connected to is not configured to the correct VLAN membership.
Options: Oracle views cannot use the ORDER BY clause in view definitions., Oracle views are created using the standard SQL-92 CREATE VIEW command., Oracle views can by queried., The SQL-92 standard does not allow the use of the ORDER BY clause in view definitions.
Options: a. Arrays are dense lists and static data structure
b. data elements in linked list need not be stored in adjecent space in memory
c. pointers store the next data element of a list
d. linked lists are collection of the nodes that contain information part and next pointer
Options: A) Input, output and processing
B) Control unit, primary storage, and secondary storage
C) Control unit, arithmetic-logic unit and primary storage
D) Control unit, processing, and primary storage
Options: a. Are some other than that in a list box the bullets are enabled b. Are different. List boxes are used to present lists and can’t be created with text boxes. c. Both of above d. None of above