grade 11 term Flashcards
Role of ICT in a workplace
- Improved communication
- Enhanced productivity
- Enhanced security
- marketing and sales
Ways to protect your information
- Use strong password
- Enable two factor authentication
- back up data
- Give the key specifications to consider when looking at a scanner
- colour depth
- Resolution
- scan speed
- Scan modes
Give the definition of
* Disk defragmentation and disk fragmentation
defragmentation
when your hard drive pulls scattered bits of data together
Disk fragmentation
When the files in your computer’s hard drive become scattered
Types of secondary storage
- Hard disk
- Solid state disk
- Optical discs
- Usb flash drives
What is Primary Memory?
Primary Memory, also known as RAM, is a type of volatile memory that loses data when power is turned off.
It has limited capacity and is more expensive per gigabyte compared to secondary memory.
What are the disadvantages of Primary Memory?
Disadvantages include volatility, limited capacity, and higher cost per gigabyte compared to secondary memory.
It also has a limited lifespan due to a finite number of read/write cycles.
What is Secondary Memory?
Secondary Memory includes storage devices like HDDs and SSDs that retain data even when powered off.
It is non-volatile and generally has a larger capacity than primary memory.
What are the disadvantages of Secondary Memory?
Disadvantages include slower access times compared to primary memory, limited durability, and potential physical damage risks.
HDDs are particularly susceptible to damage from drops.
What is Online Storage?
Online storage, or cloud storage, allows users to store and access data on remote servers via the internet.
It provides accessibility from any location with internet connectivity.
What are the advantages of Online Storage?
Advantages include accessibility, scalability, cost-effectiveness, backup and recovery options, collaboration, and security measures.
Security includes encryption and access controls.
What are the disadvantages of Online Storage?
Disadvantages include internet dependency, privacy concerns, long-term cost, slow data transfer speeds, reliability issues, and limited control over data management.
Users may face risks related to data breaches.
What are External Drives?
External Drives are portable hard drives connected via USB or other interfaces.
They offer high capacity and fast data transfer speeds.
What are Solid State Drives (SSD)?
SSDs are flash-based storage devices that provide high-speed data access and have no moving parts.
They are very fast and reliable but can be more expensive per gigabyte than HDDs.
What are the disadvantages of SSDs?
Disadvantages include susceptibility to physical damage and limited write cycles, which can lead to data corruption.
They are generally more expensive per gigabyte compared to HDDs.
What is the purpose of a UPS?
UPSs are used to protect equipment from damage caused by power outages, voltage spikes, and other power issues.
What are the functions of a UPS?
- Power backup: Provides temporary power during outages.
- Power protection: Protects against power surges, spikes, sags, and brownouts.
- Noise filtering: Removes electrical noise and interference.
- Data protection: Provides enough power to safely shut down computers and servers.
- Business continuity: Maintains operations during short power outages.
- Monitoring: Monitors and logs the status of the power supply.
- Restart: Restarts equipment after a long power outage.
- Alarming: Provides alarms on certain error conditions.
- Short-circuit protection: Provides short-circuit protection.
Where are UPSs commonly used?
UPSs are commonly used in data centers, healthcare facilities, telecommunications networks, and other settings where power quality and continuity are critical.
