exercise
1. what data threat is described below
(a) clicking on suspicious links
(b) forgetting to lece your electronic device after use.
2. state 3 things a strong password should have.
3. state 3 lines used in dimensioning
4. why do most people prefer to use of concrete when construct houses
5. a welder wants to cut a metal rod into dened fizer
(a) name the tool the welder used.

Question

Accepted Answer

### Question 2: State 3 things a strong password should have.
# Brief Explanations:
A strong password is crucial for security. It should have a mix of character types (uppercase, lowercase, numbers, symbols) to increase complexity. A sufficient length (at least 8 - 12 characters) makes it harder to crack. Also, it should avoid common words, personal info (like names, birthdays) to prevent easy guessing.
# Answer:
1. A mix of uppercase letters (e.g., A, B), lowercase letters (e.g., a, b), numbers (e.g., 1, 2), and special symbols (e.g.,!, @).
2. A minimum length of 8 - 12 characters (longer is better, e.g., 12 or more characters).
3. No use of common words, personal information (like names, birth dates) or easily guessable patterns.

### Question 3: State 3 lines used in dimensioning.
# Brief Explanations:
In technical drawing (for engineering/construction), dimensioning lines include extension lines (extend from object to dimension line), dimension lines (show the measurement length), and leader lines (used to indicate features or notes). These lines follow standards to clearly communicate dimensions.
# Answer:
1. **Extension Lines**: Thin lines extending from the object being dimensioned, showing the limits of the dimension.
2. **Dimension Lines**: Thin lines with arrowheads at ends, indicating the length/measurement of the dimension.
3. **Leader Lines**: Thin lines (often with an arrowhead or dot) used to point to a feature and attach a note or dimension (e.g., for holes, text notes).

### Question 4: Why do most people prefer to use concrete when constructing houses?
# Brief Explanations:
Concrete is popular in house construction due to its durability (resists weather, pests, wear over time), strength (can bear heavy loads, good for foundations, walls), and versatility (can be molded into various shapes, used in different structural elements like slabs, beams). It’s also relatively cost - effective for long - term use and provides fire resistance, which enhances safety.
# Answer:
1. **Durability**: Concrete is highly durable, resisting weathering, pests, and physical damage over long periods, ensuring the house lasts for decades.
2. **Strength**: It has high compressive strength, making it suitable for load - bearing structures (foundations, walls, slabs) to support the house’s weight and external loads (like snow, wind).
3. **Versatility**: Can be molded into any shape (e.g., for custom foundations, decorative elements) and used in various structural components (slabs, beams, columns).
4. **Fire Resistance**: Concrete is non - combustible, providing fire safety and reducing the risk of fire damage to the house.
5. **Cost - Effectiveness (Long - Term)**: While initial costs vary, its durability and low maintenance needs make it cost - effective over the house’s lifespan. (Any 3 of these or similar valid reasons can be stated.)

### Question 5(a): Name the tool the welder used to cut a metal rod into desired sizes.
# Brief Explanations:
Welders use tools like a hacksaw (manual, for smaller rods), a metal cutting saw (powered, for faster/larger cuts), or an oxy - acetylene torch (for cutting through thicker metal with heat). For precise, smaller - scale cutting of metal rods, a hacksaw is common, but power tools like a chop saw (metal cutting saw) are also used.
# Answer:
A welder can use a **hacksaw** (manual, suitable for smaller rods and precise cuts), a **metal - cutting chop saw** (powered, for faster and more efficient cutting of metal rods), or an **oxy - acetylene cutting torch** (for cutting thicker metal rods using heat to melt and remove material). (Commonly, a hacksaw or metal - cutting saw is used for cutting metal rods into desired sizes.)

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Explanation:

Question 2: State 3 things a strong password should have.

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Question 3: State 3 lines used in dimensioning.