1 . Which security protocol or measure would provide the greatest protection for a wireless LAN? WPA2 cloaking SSIDs shared WEP key MAC address filtering 2 . Refer to the exhibit. All trunk links are operational and all VLANs are allowed on all trunk links. An ARP request is sent by computer 5. Which device or devices will receive this message? only computer 4 computer 3 and RTR-A computer 4 and RTR-A computer 1, computer 2, computer 4, and RTR-A computer 1, computer 2, computer 3, computer 4, and RTR-A all of the computers and the router 3 . Refer to the exhibit. Hosts A and B, connected to hub HB1, attempt to transmit a frame at the same time but a collision occurs. Which hosts will receive the collision jamming signal? only hosts A and B only hosts A, B, and C only hosts A, B, C, and D only hosts A, B, C, and E 4 . Refer to the exhibit. Router RA receives a packet with a source address of 192.168.1.65 and a destination address of 192.168.1.161...
It is not at all mandatory to use throws IOException. If you call a method that can throw an exception, though, you're required to either
ReplyDeleteCatch it, or
Declare that you're going to rethrow it.
The second one is what you're doing. The other one -- which is often the preferred technique -- is to catch and handle the exception yourself:
public static void main(String[] argv) {
try {
FileReader f = new FileReader("foo.txt");
// ... more
} catch (IOException ioe) {
System.out.println("Trouble reading from the file: " + ioe.getMessage());
}
}
AFAIK, it is not mandatory.
ReplyDeleteYou either handle the exception or you don't.
If you do handle the exception, then you need to put a try {...} catch(IOException e) {...}, but if you don't handle it, just declare the throws IOException in the current method.