Module 3 Flashcards
What is the DOS?
Disk Operating System - command line terminal, and a file system.
What does DOS do, how is it organized?
Provides a file system which organizes the files in a specific way on the disk.
What is MS-DOS?
Created by Microsoft, used a command line as the interface for people to create programs and manipulate data files.
What is a 64-bit system compared to a 32-bit system?
The bit version of your Windows PC indicates how it handles data. A 64-bit, unlike a 32-bit can process larger chunks of data. This relates to better performance and compatibility with certain software. Certain programs can only be run with the correct header (header tells the OS what architecture they were compiled for x86 (16 or 32 bit) or x86_64). The number of bits refers to the size of memory addresses used by the computer. (More memory locations for storage, etc.)
Operating System Vunerabilities
Operating systems consist of millions of lines of code. With all this code comes vulnerabilities. In general, the goal is to gain unauthorized control of a computer, change permissions, and to steal or manipulate data.
Security Recommendations
Firewall, File Permissions (Sharing), strong password, logon as Admin,
Windows Architecture - Speak on two levels
HAL (Hardware Abstraction Layer) is software that handles communication between the hardware and the kernel. The kernel is the core of the OS and has control over the entire computer.
What are the two modes?
User Mode and Kernel Mode
What are the differences between the two modes?
Installed applications run in user mode and operating system code runs in kernel mode. When user code runs, it is granted its own restricted address space by the kernel, along with a process created specifically for the application.
Explain the windows file system
A file system is a storage structure on a computer that organizes data. It allows users to access data quickly and easily.
Three file systems for Windows
FAT16, FAT32 and NTFS. FAT32 has fewer restrictions…need more info
What is NTFS? 3 differences
New Technology File System
File size can be bigger compared to FAT32
Volume size can be bigger 32 TB
Fault Tolerance
What is the Extended File System (EXT)
Used for Linux-based computers. Windows is able to read data from EXT partitions.
What is the Partition Boot Sector for NTFS?
Not sure
What is the Master File Table?
This table contains the locations of all the files and directories on the partition, including file attributes such as sec information and timestamps.
