Memory Unit III - SS2 ICT Past Questions and Answers - page 2

Hard Disk Drives (HDDs) use spinning platters and read/write heads to access data. They have slower access times due to mechanical movements. Solid-State Drives (SSDs) use flash memory chips and have no moving parts, resulting in much faster access times and better durability. SSDs are generally more expensive per GB compared to HDDs, but they offer improved performance and reliability, making them ideal for operating systems and frequently accessed files.

A Network-Attached Storage (NAS) device is a dedicated file storage system connected to a network. It allows multiple users to access and share files over the network, providing centralized storage and data management. NAS devices often offer features like data redundancy through RAID configurations, remote access via the internet, and data backups. They are particularly advantageous in business environments where collaborative file sharing, data security, and scalable storage solutions are needed.

• Benefits: Cloud Storage offers remote access to files from anywhere with an internet connection. It eliminates the need for physical storage devices, reduces the risk of data loss due to device failure, and provides scalability as users can easily increase storage space. Cloud providers also handle maintenance and security.
• Limitations: Cloud Storage relies on internet connectivity, so access may be limited without a reliable connection. There may be concerns about data privacy and security, as the data is stored on remote servers. Additionally, cloud storage solutions often involve subscription fees, which can become expensive over time.

 

Example of Unit Conversion Scenario:

Imagine you're planning a road trip from the United States to Canada. You need to convert the speed limits from miles per hour (mph) to kilometers per hour (km/h) for accurate driving. Let's say the speed limit is 65 mph. To convert to km/h:

 

First, you know that 1 mile is approximately 1.60934 kilometers.

Multiply the speed limit (65 mph) by the conversion factor (1.60934) to get the speed in km/h: 65 * 1.60934 ≈ 104.6091 km/h.

Therefore, the speed limit in Canada would be approximately 104.61 km/h.

(Note: These are concise answers. If you need more details or explanations, feel free to ask.)