2. 3. Page 2 of 5 A Haskell variable. A Haskell variable is a sequence of one or more characters which can be either uppercase letter (A-Z), lowercase letters (a-z), digits (8-9), the underscore (_) character, or the apostrophe (¹) characters. However, the first character must be either a lowercase letters or an underscore character, it cannot be a digit or the apostrophe. For example, both "abc1", "_xyz'" are valid Haskell variables.4 A US state and zip code in postal addresses. When writing a postal address, the state is usually written as a 2-uppercase-letter abbreviation. There can be an optional space character between the state and the zip code. The zip code is either a simple zip code or a zip+4 code. The simple zip code is simply a group of 5 decimal digits (which can start with the digit 0). The zip+4 code is the simple zip code followed by a hyphen (-) character and then another group of 4 digits. For example, the state and zip code for FSU can be written as either "NC28301", "NC 28301", "NC28301-4252", or "NC 28301- 4252".

Do not use any Al to do this question. Please show the diagram at the end. Question Lekker Living is a new backpackers that recently opened close to Stellenbosch. They have a limited number of staff (including a receptionist, a cook, and a housekeeper) since they have limited rooms available. If foreign travelers are looking for a place to stay a few nights while exploring the wonderful wine farms and hiking trails in Stellenbosch, they need to check availability on the website. If there is space, they must call reception to book a room. Orice they arrive, they check in at the front desk. In the evenings, they have the option to enjoy an assortment of dishes, prepared by a cook. Guests can also request for the room to be cleaned by a housekeeper in the mornings, while they are out and about exploring. Once their stay is over, they can check out with the receptionist. If a guest can no longer make their stay, they have the option to cancel their booking 24 hours before. Draw the use…

Define Working Set. What is the context? What are consequences of incorrect working sets?   (short answer is ok)

What does the term "Top-Down Approach" mean?

May I request an illustration of the operational mechanics of the queuing process?