[amp_mcq option1=”support displays containing multiple windows” option2=”requires considerable amount of video RAM” option3=”requires tremendous amount of copying and hence low performance” option4=”All of the above E. None of the above” correct=”option4″]
The correct answer is: D. All of the above
A bit-mapped terminal is a type of computer terminal that displays text and images as a series of dots, or pixels. This is in contrast to a character-based terminal, which displays text as a series of characters.
Bit-mapped terminals have several advantages over character-based terminals. First, they can display text and images in a much higher resolution. This makes them ideal for tasks such as word processing, graphics editing, and web browsing.
Second, bit-mapped terminals can support multiple windows. This allows users to have multiple applications open at the same time, which can be very helpful for multitasking.
However, bit-mapped terminals also have some disadvantages. First, they require a lot of video memory. This is because each pixel on the screen needs to be stored in memory.
Second, bit-mapped terminals can be slower than character-based terminals. This is because they require more processing power to generate the images that are displayed on the screen.
Overall, bit-mapped terminals offer a number of advantages over character-based terminals. However, they also have some disadvantages, such as the need for a lot of video memory and the potential for lower performance.
Here is a more detailed explanation of each option:
- Option A: Bit-mapped terminals support displays containing multiple windows. This is because they can store the image of each window in memory, and then display it on the screen.
- Option B: Bit-mapped terminals require considerable amount of video RAM. This is because each pixel on the screen needs to be stored in memory.
- Option C: Bit-mapped terminals require tremendous amount of copying and hence low performance. This is because when the image of a window changes, the entire window needs to be copied to memory. This can be a very slow process, especially if the window is large.