Explanation:
In engineering, system integration is process of bringing various component subsystems together into one single system and also ensuring that these subsystems function as one system together.
In information technology, it is process of linking together various computing systems and various software applications functionally or physically, to act as coordinated whole.
System integrator integrates various discrete systems utilizing variety of techniques.
Answer:
Option D is correct. A pound sign is used to indicates that a cell is not wide enough to display its numbers.
Explanation:
A pound sign symbol indicates that a cell is not wide enough to display its number in Excel. However, it is noted that if you use or installed a US keyboard in your computer then hash symbol (#) is shown and the pound sign symbol is shown if you use or installed the UK keyboard layout in your computer.
Why other options are not correct.
this symbol is used for multiplication in formula or in a cell to multiply the numbers with each other.
A dollar sign is used in a cell to show the currency. If you want to show the cell value as a currency. Then, you can use the dollar sign.
Percentage sign in the cell shows that value in a cell is representing a percentage of some values.
<span>The software that instructs the computer how to run applications and controls the display /keyboard is known as DRIVERS software,
A driver is a software program that enables a specific hardware device to work with a computers operating system.
Drivers may be required for internal components such as video cards and optical media drives.</span>
Answer:
Meaning:
PT BOAT ONE OWE NINE LOST IN ACTION IN BLACKETT
STRAIT TWO MILES SW MERESU COVE X CREW OF TWELVE
X REQUEST ANY INFORMATION.
Explanation:
Playfair cipher invented in 1854 by Charles Wheatstone was the first practical digraph substitution cipher. Lord Playfair promoted the use of the cipher, therefore it was named after him. Playfair cipher encrypts pairs of letters (digraphs) making it hard to break. Frequency analysis can still be undertaken but requires much more cipher text in order to work. It requires no additional equipment to operate and is very fast therefore it is to protect information during war. It was used by British forces in the Second Boer War and in World War I and during World War II by the Australians.
When the PT-109 American patrol boat, under the command of Lieutenant John F. Kennedy, was sunk by a Japanese destroyer, a message was received at an Australian wireless station in the morning of the 2 of August 1943 in Playfair code:
KXJEY UREBE ZWEHE WRYTU HEYFS
KREHE GOYFI WTTTU OLKSY CAJPO
BOTEI ZONTX BYBWT GONEY CUZWR
GDSON SXBOU YWRHE BAAHY USEDQ
Meaning:
PT BOAT ONE OWE NINE LOST IN ACTION IN BLACKETT
STRAIT TWO MILES SW MERESU COVE X CREW OF TWELVE
X REQUEST ANY INFORMATION.
