chapter 7 Flashcards
(22 cards)
What is the role of an ISP (Internet Service Provider)?
An ISP connects home or SOHO networks to the internet and may offer services like email, hosting, and cloud storage
- Name TWO common ISP connection types used at home.
A: Cable and DSL.
- What is the main advantage of a satellite internet connection?
A: It provides access in remote areas where DSL or cable is not available.
- What is cloud computing?
A: Cloud computing allows users to access and store data and applications over the internet using remote servers.
- List FOUR types of cloud models.
A: Public cloud, Private cloud, Hybrid cloud, Community cloud.
- What is SaaS in cloud services?
A: Software as a Service – access to software applications over the internet (e.g., email, MS 365).
- What is virtualization?
A: The creation of a virtual version of hardware, software, or operating system to maximize resource usage.
- What are the TWO types of hypervisors?
A: Type 1 (Bare Metal) and Type 2 (Hosted).
- What is the main benefit of using virtualization in servers?
A: Reduces cost by consolidating physical equipment and improving energy efficiency.
- Define Software-Defined Networking (SDN).
A: SDN separates the control and data plane, centralizing control in a network controller.
- What is the function of the control plane in a network device?
A: It makes forwarding decisions based on routing tables and protocols.
- What is the difference between cloud computing and virtualization?
A: Cloud computing is about accessing services over the internet, while virtualization creates virtual versions of resource
- What is the purpose of using Wi-Fi over cellular on mobile devices?
A: To save cellular data and battery life.
- Name TWO precautions for Wi-Fi security on mobile devices.
A: Use WPA2 encryption and avoid sending plaintext credentials.
- What is Bluetooth pairing?
A: The process of connecting two Bluetooth-enabled devices by making one discoverable and authenticating with a PIN.
- Give TWO uses of Bluetooth.
A: Connecting a hands-free headset and sharing a network connection (tethering).
- Compare the different ISP connection options for home users.
Cable: Uses coaxial cable, fast and stable.
DSL: Uses phone lines, split into channels for voice and data.
Cellular: Uses mobile networks; speed depends on signal strength and device.
Satellite: Works in remote areas but needs a clear line of sight to the sky.
Dial-up: Very slow, uses modems over telephone lines.
- Explain the types of cloud computing models and give examples of each.
Public Cloud: Open to the public (e.g., Gmail, Dropbox).
Private Cloud: Used by one organization only (e.g., government cloud systems).
Hybrid Cloud: Combines public and private (e.g., AWS with private backups).
Community Cloud: Shared by organizations with common interests (e.g., hospital networks).
- Discuss the benefits of virtualization in enterprise networks.
Reduces the need for physical servers.
Lowers power and cooling costs.
Saves space in data centers.
Enables quick recovery in disaster scenarios.
Supports faster testing and deployment of services.
- Describe the differences between Type 1 and Type 2 hypervisors with examples.
Type 1: Installs directly on hardware (e.g., VMware ESXi); more efficient and used in enterprises.
Type 2: Runs on top of an existing OS (e.g., Oracle VirtualBox); used for personal and testing environments.
- Explain how SDN changes traditional network device operations.
Traditional networks combine control and data planes within each device.
SDN separates these planes, moving control to a central controller.
The controller programs devices with forwarding rules.
This allows for better automation, centralized control, and adaptability.
- Outline the steps to connect a mobile device to a Wi-Fi network securely.
Turn on Wi-Fi.
Scan for available networks and select the correct SSID.
Enter the correct password (case-sensitive).
Use WPA2 or higher encryption.
Consider using a VPN when handling sensitive information.
