*WAEC DATA PROCESSING*

*NUMBER FOUR*


(4a)
Hackers are individuals who gain unauthorized access to computer systems or networks, often to steal data or cause damage.

*WHILE*

Spammers send unsolicited or irrelevant messages, usually in bulk, often for advertising or phishing purposes.

(4b)
(PICK ANY ONE)
(i) Enhances Excel functionality (e.g., advanced data analysis).
(ii) Automates repetitive tasks.
(iii) Provides specialized tools (e.g., Solver, Analysis ToolPak).
(iv) Integrates Excel with other software or systems.
(v) Supports custom formulas and functions.
(vi) Improves productivity with custom user interfaces.

(4c)
(i) Cookies: Small files stored on a user's device by websites to remember information like login details or preferences.
(ii) Plugin: A software component that adds specific features to an existing computer program (e.g., video player plugin in a browser).
(iii) Web crawlers: Automated programs that browse the web to index content for search engines like Google.

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*WAEC FISHERIES*

*NUMBER FOUR*

(4a)
(PICK ANY FIVE)
(i) Foul or unpleasant odor
(ii) Murky or discolored water
(iii) High mortality rate in fish
(iv) Presence of algae blooms
(v) Low dissolved oxygen levels
(vi) Unusual fish behavior

(4b)
(PICK ANY FOUR)
(i) Regular water change
(ii) Proper pond aeration
(iii) Avoid overfeeding
(iv) Proper waste management
(v) Use of water testing kits
(vi) Liming to stabilize pH
(vii) Filtration systems
(viii) Avoiding overcrowding of fish

(4ci)
(PICK ANY THREE)
(i) Algae
(ii) Insects
(iii) Worms
(iv) Plankton
(v) Detritus
(vi) Aquatic plants

(4cii)
(PICK ANY THREE)
(i) Pellets
(ii) Crumbles
(iii) Mash
(iv) Flakes
(v) Dough
(vi) Extruded feed

(4di)
(PICK ANY THREE)
(i) Broadcasting
(ii) Tray feeding
(iii) Hand feeding
(iv) Automated feeding
(v) Demand feeding
(vi) Feeding rings

(4dii)
35% to 45%

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*DATA PROCESSING*

(1ai)
Data processing refers to the series of operations performed on data to extract, transform, and load information into a useful and meaningful form. It involves manipulating and analyzing data to produce meaningful results, such as reports, summaries, or forecasts.

(1aii)
Data collation refers to the process of gathering, collecting, and organizing data from various sources into a single, unified view. It involves aggregating data from different places, such as databases, files, or spreadsheets, to create a comprehensive dataset.

(1b)
The Data Processing Cycle, also known as the Information Processing Cycle.

(1c)
(i)Speed
(ii)Accuracy
(iii)Capacity

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DATA PROCESSING


(2a)
(i) A: Monitor
(ii) B: Printer
(iii) C: Mouse
(iv) D: Keyboard

(2b)
- Device A: Output Device
- Device B: Neither (processing device)
- Device C: Input Device
- Device D: Input Device

(c)
- Touchscreen
- USB storage device

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*TOURISM*
(13A)

1.*Itinerary Planning*: Designing and organizing travel itineraries, including transportation, accommodation, and activities.

2.*Booking and Reservations*: Making reservations for flights, hotels, and other services on behalf of clients.

3.*Guiding and Escorting*: Providing guides or escorts to accompany clients during their tour, ensuring a smooth and enjoyable experience.

4.*Logistics Management*: Coordinating transportation, accommodation, and other logistical arrangements for clients.

5.*Customer Service*: Providing support and assistance to clients before, during, and after the tour, addressing any concerns or issues that may arise.

6.*Marketing and Promotion*: Promoting tour packages and services to attract clients, often through various marketing channels such as websites, social media, and advertising.

(13B)
1.*Information Provision*: Brochures provide detailed information about tourism products, such as destinations, attractions, accommodations, and activities.

2.*Promotion and Awareness*: Brochures promote tourism products and create awareness among potential customers, highlighting the unique features and benefits of each product.

3.*Visual Representation*: Brochures use images and graphics to visually showcase tourism products, helping customers to imagine and visualize their experiences.

4.*Inspiring Travel Decisions*: Brochures inspire and influence travel decisions by highlighting the attractions, experiences, and value proposition of tourism products, motivating customers to book or inquire further.

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*TOURISM*
(13c)

1. *Validity Period*: Passports typically have a validity period (e.g., 5 or 10 years) and must be renewed before expiration.

2. *Destination Requirements*: Some countries require passports to be valid for a certain period (e.g., 6 months) beyond the intended stay.

3. *Condition and Authenticity*: Passports must be in good condition and authentic, with no significant damage, alterations, or tampering.

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*Tourism*

(11a)
Leisure refers to free time or activities that individuals engage in for enjoyment, relaxation, or personal satisfaction, outside of work, school, or other obligations.

(11b)
(i)Uniqueness: A unique feature or characteristic that sets the attraction apart from others.
(ii)Accessibility: Easy to reach and access, with adequate infrastructure and transportation options.
(iii)Aesthetic appeal: Visually appealing or attractive, with scenic views, architecture, or cultural significance.
(iv)Amenities: Availability of facilities and services, such as food, beverages, and restrooms, to enhance the tourist experience.
(v)Authenticity: Genuine and true to its culture, history, or natural environment, providing an authentic experience for tourists.

(11c)
(i)Accommodation: Hotels, resorts, hostels, or other types of lodging that provide tourists with a place to stay.
(ii)Food and beverage services: Restaurants, cafes, bars, or other establishments that provide tourists with dining options.
(iii)Recreational facilities: Swimming pools, gyms, spas, or other facilities that provide tourists with opportunities for relaxation and entertainment.
(iv)Guided tours and services: Guided tours, tourist information centers, or other services that help tourists navigate and understand the destination.



(12a)
A visitor in tourism is a person who travels to a destination outside of their usual environment for a period of less than a year, for purposes such as leisure, business, education, or other personal reasons.

(12b)
(i)Accommodation: Tourists spend money on hotels, resorts, hostels, or other types of lodging.
(ii)Food and beverages: Tourists spend money on meals, snacks, and drinks at restaurants, cafes, or other food establishments.
(iii)Transportation: Tourists spend money on transportation costs, such as flights, taxis, rental cars, or public transportation.
(iv)Activities and attractions: Tourists spend money on entrance fees, guided tours, or other activities and attractions, such as museums, theme parks, or cultural events.

(12c)
(i)Historical monuments: Buildings, structures, or sites of historical significance, such as ancient temples, castles, or monuments.
(ii)Cultural traditions: Customs, practices, and traditions that are unique to a particular nation or community, such as music, dance, or art.
(iii)Natural heritage: Unique natural features or landscapes, such as national parks, wildlife reserves, or scenic vistas.
(iv)Cuisine: Traditional foods, cooking methods, and culinary practices that are characteristic of a particular nation or culture.
(v)Language and literature: The language, literature, and literary heritage of a nation, including works of famous authors, poets, or writers.

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DATA PROCESSING

(3a)
(i) Simplex is a mode where data flows in one direction only, from sender to receiver, like a radio broadcast.
(ii) Half duplex allows data to flow in both directions, but not simultaneously, like a walkie-talkie where only one party speaks at a time.
(iii) Full duplex enables data to flow in both directions simultaneously, like a telephone conversation where both parties can talk and listen at the same time.

(3b)
(i) simplex:
Television broadcasting.
(ii) half duplex:
Internet chat.
(iii) full duplex:
Telephone call.

(3c)
Transmitter.

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*WAEC FISHERIES*

(2a)
(PICK ANY FIVE)
(i) Select a suitable site with good water supply and proper drainage.
(ii) Clear the area of any vegetation, debris, or obstacles.
(iii) Mark the boundaries of the pond and determine the shape and size.
(iv) Excavate the pond to the desired depth, ensuring proper sloping.
(v) Construct an inlet and outlet for water flow, ensuring proper drainage.
(vi) Line the bottom with clay or compact soil to prevent water leakage.
(vii) Fill the pond with water and allow it to settle for a few days.
(viii) Install aeration systems or water fountains if necessary.
(ix) Check for any leaks or issues and make necessary adjustments.
(x) Add appropriate fish species and ensure regular maintenance.

(2bi)
(PICK ANY THREE)
(i) Clear the pond of debris, weeds, and any obstacles.
(ii) Level and shape the pond to ensure proper water distribution.
(iii) Fill the pond with water, ensuring a steady supply.
(iv) Test the water for quality, including pH, temperature, and oxygen levels.
(v) Apply lime to adjust pH levels if necessary.
(vi) Fertilize the pond to stimulate plankton growth for fish feed.
(vii) Install proper inlet and outlet systems for water flow and drainage.
(viii) Ensure the pond is free of predators and harmful organisms.
(ix) Allow the pond to settle for a few days before introducing fish.
(x) Stock the pond with appropriate fish species for the environment.

(2bii)
(PICK ANY FOUR)
(i) Agricultural lime (calcium carbonate)
(ii) Quicklime (calcium oxide)
(iii) Hydrated lime (calcium hydroxide)
(iv) Dolomitic lime (calcium magnesium carbonate)
(v) Burnt lime
(vi) Slaked lime

(2c)
(PICK ANY FOUR)
(i) Reduces light penetration, affecting the growth of aquatic plants and plankton.
(ii) Decreases oxygen levels in the water, which can stress fish.
(iii) Impairs fish feeding behavior, as they rely on clear water to locate food.
(iv) Increases the risk of disease by limiting water quality and increasing pathogens.
(v) Causes sedimentation, which can clog gills and harm fish.
(vi) Reduces the overall aesthetic and environmental quality of the pond.

(2d)
(PICK ANY FOUR)
(i) Provide a balanced and nutritious diet to promote health and reproductive performance.
(ii) Ensure proper water quality, including maintaining appropriate temperature, pH, and oxygen levels.
(iii) Regularly check for diseases and parasites, and treat them promptly.
(iv) Maintain a proper breeding environment, including suitable breeding tanks or ponds.
(ii) Perform periodic health checks and remove any sick or weak fish.
(vi) Rotate or rest broodstock periodically to prevent overuse and ensure continued fertility.
(vii) Provide ample space for movement and reduce stress by avoiding overcrowding.
(viii) Manage breeding cycles to ensure the right timing for reproduction.

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