Operating Systems and Networking Flashcards
What is The 7 Network Layers (OSI Model)?
The Open Systems Interconnection model is a conceptual framework used to understand network interactions in seven layers. Each layer has a specific function, and understanding this model is vital for anyone in IT and cybersecurity.
What layer in the (OSI Model) interfaces directly with applications, responsible for network services like email, file transfers, and web browsing? EX: Email, file transfer, etc.
Layer 7, Application
What layer in the (IOS Model) translates data between the network and application formats, responsible for data encryption/decryption and compression? EX: Html, docx, avi, etc.
Layer 6, Presentation
What layer in the (IOS Model) manages communication sessions, continuous exchange of information in the form of multiple transmissions between nodes? EX: Session protocol establishment
Layer 5, Session
What layer in the (IOS Model) is a reliable transmission of data segments, including segmentation, acknowledgment, and multiplexing? EX: TCP, UDP, SSL, etc.
Layer 4, Transport
What layer in the (IOS Model) manages a multi-node network, including addressing, routing, and traffic control? EX: IP, ARP, IPSec, etc.
Layer 3, Network
What layer in the (IOS Model) is a node-to-node data transfer, error detection, and correction from the physical layer? EX: Ethernet, 802.11, Token ring, etc.
Layer 2, Data Link
What layer in the (IOS Model) is the transmission and reception of raw bit streams over a physical medium? EX: Wires, Antenna, etc.
Layer 1, Physical
When entered in the terminal, the __ command lists the files and directories in the current working directory.
“ls” (List) command: Displays the contents of a directory.
The __ command is used to change the working directory. In the example, it moves the user into the “Documents” directory.
“cd” (Change Directory) command: Navigates to a specified directory.
The __ command is used to create a new directory. In this case, it creates a directory named “NewDirectory.”
“mkdir” (Make Directory) command: Creates a new directory.
The __ command is used to copy files or directories. In the example, it copies “file.txt” to the specified destination path.
“cp” (Copy) command: Copies files or directories.
The __ command is used to move or rename files or directories. In the example, it moves “file.txt” to the specified new path.
“mv” (Move) command: Moves or renames files/directories.
The __ command is used to remove (delete) files or directories. Caution is advised when using this command, as it permanently deletes the specified file.
“rm” (Remove) command: Deletes files/directories.
The __ command creates an empty file with the specified name. In the example, it creates a file named “newfile.txt.”
“touch” command: Creates an empty file.
What is a Command Prompt?
The traditional command-line interface that allows text-based interaction with the system. Basic commands include “cd” for changing directories and “dir” for listing files.
What is a Task Manager?
A system monitoring tool that provides information about running applications, processes, and system performance. It allows users to end tasks and manage system resources.
What is IPv4 and IPv6?
“Internet Protocol version 4” and “Internet Protocol version 6” respectively, and they are the two primary versions of IP addresses used to identify devices on the internet, with the key difference being that IPv6 offers a significantly larger address space compared to the older IPv4, which is nearing exhaustion due to the growing number of connected devices.
What is the function of Windows Defender?
Protects home users from malware and provides a baseline of cybersecurity.
what is the function of Bitlocker?
Provides disk encryption to protect data in case of theft or unauthorized access.
What is a Windows Update?
A tool for keeping the operating system and software up-to-date with the latest security patches and feature updates.
What is PowerShell?
A more advanced command-line shell with scripting capabilities. It enables task automation, system management, and intricate command structures.
What is subnetting?
The process of dividing a larger network into smaller, logical subnetworks (or subnets), allowing for more efficient IP address allocation and improved network traffic management by isolating different parts of a network and routing data packets more effectively between them.
