Notes, summaries, assignments, exams, and problems for Vocational training

IPL (Initial Program Load)

IPL (Initial Program Load) -> Power On Self Test (POST)

BIOS (Basic Input/Output System)

BIOS: A set of input and output routines. It handles the communication between the operating system and hardware.

Types of Memory

• RAM (Random Access Memory): For both reading and writing.
• ROM (Read-Only Memory): For reading only.

Types of ROMs

• ROM: Read-Only Memory.
• PROM: Programmable Read-Only Memory. A digital memory where each bit's value depends on a fuse that can be burned only once.
• EPROM: Erasable Programmable Read-Only Memory. Read sequentially. Less reading provides a greater margin for error.
• EEPROM: Electrically Erasable Programmable Read-Only Memory. The signal is updated and erased with the BIOS.

RAM and ROM Classification

• Dynamic

Vocabulary: Global Concepts

Global

Occurring or given on the scale of the entire globe.

Postindustrial

A type of society based less on manufacturing output and more on the production of services and knowledge.

Informational

A kind of post-industrial society where activities are organized through modern means of information processing.

Modernization

The transformation of a traditional society into a modern, technologically developed one with a high level of material welfare.

Transnational Corporations

Companies that develop their productive activities in several countries and seek to sell their goods and services in the global market.

Liberalization

The reduction of government controls on economic activity, allowing it to move within a framework of free... Continue reading "Key Global Development Terms Explained" »

Types of Network Routing

There are three primary types of routing defined in a routing table:

• Direct Routing: The destination machine is located within the same local network (access network). The IP address and subnet mask are known. The IP datagram is transmitted directly to the destination or an adjacent neighbor (whose address is registered in the routing table's route field). The machine itself is capable of performing this routing without involving an intermediate router. A neighbor is another machine connected to the same network segment.
• Indirect Routing: The target machine is not in the same access network. The network address of the target machine is known, and the datagram must be forwarded through a neighboring router (the next hop)

Asynchronous Transfer Mode (ATM) Networks

Integrating Multimedia Services with ATM VPN

The integration of voice and image services within Asynchronous Transfer Mode (ATM) creates a Multimedia Virtual Private Network (VPN). This innovative approach allows services previously provided on separate networks to be consolidated into a single, unified network.

ATM VPNs are based on the concept of a Virtual Private Network, offering resources dedicated exclusively to the client. This is achieved through a shared network infrastructure and a single access point to the network. Integration is facilitated by deploying an integration device at the customer's premises.

ATM Integration Device Capabilities

The integration device can consolidate data, voice, and... Continue reading "ATM and FDDI Networks: Advanced Data Transmission Solutions" »

Product Cost

Acquisition

Purchase of primary materials and other resources + cost of the procurement function - Discounts, commissions, and development shopping.

Storage

Costs originating from holding stock in the warehouse.

Manufacturing

Costs generated at different levels of the manufacturing cycle (transforming primary materials into completed products).

Cost Imputation to Product

Direct Costs

Costs that can be identified with the specific product that caused them.

Indirect Costs

Common costs that are not attributed to any particular department or product.

Semidirect Costs

Costs that cannot be applied directly to a product but can be allocated to a shop, section, or department.

Cost by Level of Activity

Fixed Costs

Costs incurred to make the company operational.... Continue reading "Product Cost, Imputation, Activity Levels, and Order Points" »

Bathroom Safety Zones

Understanding V0, V1, V2, and V3 Zones

V0 Zone

With Bathtub or Shower Head: Inside the bathtub or shower enclosure.

Without Shower Head and with Fixed Plate: Bounded horizontally by the edges of the plate and vertically from the floor to 0.05m above the floor.

With Movable Shower Head: Bounded by a vertical plane with a 1.2m radius around the water outlet, effectively enclosing the area intended to be occupied by the user.

With Fixed Shower Head: Bounded by a vertical plane with a 0.6m radius around the shower head.

V1 Zone

Extends horizontally 2.25m from the V0 zone and vertically from the floor to 2.25m above the floor. This includes the space accessible without tools.

With Movable Shower Head: Limited by a vertical plane with... Continue reading "Bathroom Safety Zones for Shower and Tub Installations" »

Production Team Roles and Responsibilities

Producer

Responsible for: Administration, organization, and distribution of funds. The Producer oversees all aspects of production.

A producer initiates production by:

• Hiring authors to write screenplays.
• Seeking financing.
• Hiring technicians and artistic staff.
• Securing theater rental and scenery materials.
• Overseeing marketing and publicity.
• Selling tours or rights for cinema, theater, or TV distribution.

The senior manager is responsible for these innings.

Director

Responsible for: Taking charge of all artistic decisions and coordination of each division head.

The Director:

• Selects departments.
• Oversees auditions and has the final word on lighting, sound, costumes, performer decor, and staging decisions.
• In a musical

Enfermedades cardiovasculares are the leading cause of death in Spain. Increased consumption of saturated fats, high-cholesterol foods, high-calorie diets, and the absence or lack of fiber and antioxidants contribute to cardiovascular risk. Neoplasias (neoplasms) are related to consumption of saturated fats and meat and derivatives.

Type 2 Diabetes

Diabetes type 2 is related to energetic imbalance and dietary patterns that increase obesity risk.

Obesity

Obesity; consumption occurs because of a high-calorie diet and physical inactivity. Obesity is a metabolic disorder with an accumulation of fat in the body that produces increased weight. La WHO (the World Health Organization) sets the classification of obesity according to body mass index (BMI)... Continue reading "Nutrition for Cardiovascular Disease, Diabetes, Obesity" »

Domain Name System (DNS)

The DNS defines domain addresses (made up of character strings) and converts them to binary transport addresses (IP addresses). It identifies users and computers in the network using DNS server names.

DNS is composed of a distributed database (DB) on the network. Its tables contain correspondence between domain names and IP addresses.

Types of DNS Servers

• Cache Server

  Saves name information on domains, not zones.

• Primary Server

  Obtains information for its zones from its zone files. If data needs modification in a zone, it is done on the primary server. It is undesirable to have only a single primary server, as its failure may prevent resolving requests.

• Secondary Server

  Gets information from the primary server. Secondary servers

Magnetic Storage Peripherals

Magnetic storage uses a ferromagnetic layer material (disks or hard drives).

Floppy Disk Drives

Floppy disks read and record information. Key parts include:

• Engine torque mechanism
• Shaft reading heads
• Ejecting mechanism and floppy connector

Hard Disk Drives (HDDs)

HDDs use tough aluminum platters that spin at high speed. The drive writes or reads data tracks.

Methods for Storing Information

• CHS (Cylinder, Head, Sector): Information is located by knowing the face, track, and sector.
• LBA (Logical Block Addressing): Data is accessed by calling a logical block number and searching for it.

HDD Physical Structure

The physical structure consists of:

• Platters (disks)
• Heads
• Spindle motor (engine torque)
• Head displacement mechanism (DLS heads)