Quin component del sistema de seguretat garanteix la continuïtat del servei durant una fallada elèctrica i com funciona?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>The UPS (Uninterruptible Power Supply) is the component that keeps services running when the main power fails.</li>
<li>It switches to battery power automatically, without any user action needed.</li>
<li>Its purpose is to provide short‑term power continuity until backup generators start or the system can be safely shut down.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: <em>U</em>ninterruptible <em>P</em>ower <em>S</em>aves – “UPS Saves Power instantly.”</li>
<li>Tip: Think of a flashlight that turns on the moment the lights go out – the UPS does the same for computers.</li>
</ul>
2
En el protocol DTMF utilitzat pels dispositius de teleassistència, quina és la seva principal avantatge respecte a altres mètodes de comunicació?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>DTMF (Dual‑Tone Multi‑Frequency) works over ordinary telephone lines, not requiring data or internet connections.</li>
<li>It sends information using pairs of audible tones (binary‑like signals) that any standard phone network can carry.</li>
<li>This makes DTMF ideal for tele‑assistance devices that must operate where only basic voice lines are available.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: <em>“Simple Phones, Dual Tones”</em> – DTMF lets simple phone lines talk using two tones.</li>
<li>Tip: Think of pressing a button on a landline; each press creates a unique sound pair that travels the same line you hear your voice on.</li>
</ul>
3
Quina és la diferència clau entre un terminal domiciliari bidireccional dels anys 90 i un terminal modern segons la normativa UNE 158401?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>UNE 158401 defines modern home terminals as compact, aesthetically designed devices without a built‑in handset.</li>
<li>Older 1990s bidirectional terminals were larger, featured a handset, and offered voice communication.</li>
<li>The key distinction is the physical form factor and the absence of an integrated ear‑piece in modern units.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: **C**ompact **A**esthetic **N**o‑handset → **CAN** modern terminals.</li>
<li>Tip: Picture a sleek, tiny wall‑mounted panel (modern) versus a bulky box with a telephone handset (1990s).</li>
</ul>
4
En una situació d'emergència durant la higiene personal, per què és crític que l'usuari porti el dispositiu de teleassistència 24 hores al dia?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>During personal hygiene emergencies, the risk of falls increases.</li>
<li>The tele‑assistance device provides immediate help when a fall occurs.</li>
<li>Continuous wear (24 hours) ensures the user is always protected.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: <em>FALL‑24‑HELP</em> – Falls are likely, 24‑hour wear, Help instantly.</li>
<li>Tip: Think of the device as a “safety blanket” you never take off, especially when you’re vulnerable.</li>
</ul>
5
Quin és l'objectiu principal d'un sensor de caiguda en una llar domòtica i com s'activa?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>The primary purpose of a fall sensor in a smart home is to automatically detect a fall.</li>
<li>When a fall is detected, the sensor triggers an alarm or notification without any user action.</li>
<li>No button press is required; the system works autonomously to alert caregivers or emergency services.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: <em>FALL = Fast Alert, No Latch</em> – a fall sensor fires a fast alert and never needs a latch (button).</li>
<li>Tip: Imagine the sensor as a “guardian angel” that jumps into action the moment you hit the ground, so you don’t have to press anything.</li>
</ul>
6
Quina funció té el component 'components duplicats' del servidor de dades en el sistema general de teleassistència?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>The “components duplicated” feature provides redundancy for the data server.</li>
<li>It creates a backup copy of critical components so that if hardware fails, the system can switch to the duplicate.</li>
<li>This ensures uninterrupted service and continuous operation of the tele‑assistance system.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: **D**uplicate = **D**efault **D**urability – duplicated components give durability against hardware failure.</li>
<li>Tip: Think of a twin backup – just like having a spare tire, the duplicate component takes over when the original “flattens.”</li>
</ul>
7
En el servei TAM, quina tecnologia ofereix la localització geogràfica més precisa i per què?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>GPS uses satellite signals to determine location, offering the highest positional accuracy.</li>
<li>Short‑range technologies like Bluetooth and Wi‑Fi rely on nearby devices or networks, which are less precise.</li>
<li>LBS (Location‑Based Services) often depend on cellular towers, providing only an approximate location.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: <em>G</em>PS = <em>G</em>reat <em>P</em>recise <em>S</em>atellites.</li>
<li>Tip: Think of GPS as the “gold standard” for pinpointing where you are, just like a GPS compass on a treasure map.</li>
</ul>
8
Quina és la diferència essencial entre la teleassistència convencional i la telemedicina segons el document?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>Teleassistència focuses on preventing incidents and providing emergency calls, but does not involve clinical diagnosis.</li>
<li>Telemedicina expands the scope to include medical diagnosis and ongoing monitoring of diseases.</li>
<li>The essential difference is that telemedicina adds clinical care beyond mere incident prevention.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: <em>DIAGNOSE</em> – Telemedicina = Diagnosis + Monitoring, while Teleassistència = only <em>Assist</em> for emergencies.</li>
<li>Tip: Think of “tele‑assist” as a “help line” and “tele‑medicine” as a “virtual doctor’s office.”</li>
</ul>
9
En el context de la seguretat informàtica del servei de teleassistència, quin element garanteix la traçabilitat de les accions sobre les dades?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>The action log records who accessed data, when, and what type of access occurred.</li>
<li>This log provides the audit trail needed for traceability in tele‑assistance services.</li>
<li>Other security measures (passwords, encryption, firewalls) protect data but do not create a trace of actions.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: <em>LOG</em> = <strong>L</strong>ocation, <strong>O</strong>ntime, <strong>G</strong>et‑type – the three pieces that give traceability.</li>
<li>Tip: Think of a “logbook” on a ship – it records every event, just as the action log records every data access.</li>
</ul>
10
Quin factor fa que un terminal GSM sigui adequat per a la teleassistència itinerant?
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Explicación
<strong>Key Takeaways</strong>
<ul>
<li>A mobile (GSM) terminal must work without a fixed telephone line.</li>
<li>It relies on a SIM card for cellular connectivity, enabling true mobility.</li>
<li>Absence of Wi‑Fi or touch‑screen requirements makes it suitable for itinerant tele‑assistance.</li>
</ul>
<strong>How to Remember</strong>
<ul>
<li>Mnemonic: **SIM‑Free‑Line** – “SIM works, no fixed line needed.”</li>
<li>Tip: Picture a roaming nurse carrying only a cell‑phone‑like device; if it needs a landline or Wi‑Fi, it can’t keep up.</li>
</ul>
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