Identify several uses of SIM cards.
What will be an ideal response?
ANSWER: GSM refers to mobile phones as “mobile stations” and divides a station into two parts: the SIM card and the mobile equipment (ME), which is the remainder of the phone. The SIM card is necessary for the ME to work and serves several additional purposes:
* Identifies the subscriber to the network
* Stores service-related information
* Can be used to back up device
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What will be the output of the following program?
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
public class Program {
public static void main(String... args) {
String k1 = "key1";
Map
By default, graphical components that are added to a JPanel are placed in the center of the pane.
Answer the following statement true (T) or false (F)
The total number of elements that can be stored in a string without increasing its current amount of allocated memory is called its:
a. Size. b. Length. c. Capacity. d. Maximum size.
How do methods setIn, setOut and setErr affect the standard input, output and error streams?
a. They output data to the standard input, output and error streams. b. They provide the only way to access the standard input, output and error streams. c. They redirect the standard input, output and error streams. d. They empty the standard input, output and error streams.