Options: (A)Is a low percentages of number of records added or deleted from a file (B) If high, reduces processing efficiency for sequential and non sequential files (C) Is a measure of the percentage of existing records updated during a run (D) Refers to how closely the files fit into the allocated 3
A switch has been configured for three different VLANs: VLAN2, VLAN3, and VLAN4. A router has been added to provide communication between the VLANs. What type of interface is necessary on the router if only one connection is to be made between the router and the switch?
Options: A) Distributed data processing first became popular
B) An operating system was first developed
C) High level procedural language were first used
D) Online real time systems first become popular
Options: (A)Controls the operation of the computer. (B) Stores data and program. (C) Move data between the computer and external environment. (D) Provides communication among processors and main memory. 3