(b) Give one reason for including the plus sign (+) in the search text in a search engine.
(c) With the aid of diagrams, differentiate between LAN and WAN.
a) Keyboard Shortcut Keys:
(i) To rotate an object in CorelDraw, you can use the keyboard shortcut Ctrl + R.
(ii) To position an object in CorelDraw, you can use the keyboard shortcut Ctrl + Shift + P.
(iii) To navigate to cell A1 in an MS Excel worksheet, you can use the keyboard shortcut Ctrl + Home.
b) Reason for including the plus sign (+) in the search text in a search engine:
The plus sign (+) is used in search engines as a way to indicate that a certain word or phrase must appear in the search results. By including the plus sign before a word, the search engine will only return results that contain that exact word or phrase.
c) Difference between LAN and WAN:
Local Area Network (LAN) is a computer network that connects devices within a limited geographic area, such as a single building or a group of buildings. Devices in a LAN are connected to each other directly or through a switch.
Wide Area Network (WAN) is a computer network that connects devices across a large geographic area, such as across cities, countries, or even continents. Devices in a WAN are connected through routers and other networking equipment, and often use public or leased communication links.
Here is a simple diagram to illustrate the difference between LAN and WAN:
LAN:
[Image of a LAN diagram with devices connected to a switch or hub]
WAN:
[Image of a WAN diagram with devices connected through routers and other networking equipment, using public or leased communication links]