Storage Area Network and VPN Overview

Questions and Answers

What is a primary benefit of using a Storage Area Network (SAN)?

It provides a secure tunnel for remote access.

It connects multiple devices using wireless technology.

It enhances the capabilities of storage devices. (correct)

It allows for anonymous browsing on the internet.

Which statement best describes a key feature of a Virtual Private Network (VPN)?

It operates exclusively over Wi-Fi networks.

It only functions on local area networks (LANs).

It encrypts data to enhance security during transmission. (correct)

It requires dedicated hardware for each user.

In what way does network topology impact a network's efficiency?

It dictates the protocols for connecting devices wirelessly.

It affects the cost of maintenance for each individual device.

It determines the types of encryption used for data security.

It defines the physical and logical arrangement of nodes in the network. (correct)

What potential vulnerability does a VPN mitigate for its users?

Exposure of users' IP addresses to external threats. Signup and view all the answers

Which of the following is NOT a characteristic of a client-server architecture?

Clients are responsible for processing data independently. Signup and view all the answers

What is a major characteristic that differentiates a WAN from a LAN?

WANs cover larger geographical areas. Signup and view all the answers

Which type of network is specifically designed for short-range communication between devices typically near one user?

Personal Area Network (PAN) Signup and view all the answers

What is the primary connection technology used in Wireless Local Area Networks (WLANs)?

High-frequency radio waves Signup and view all the answers

Which of the following is NOT a typical feature of a Local Area Network (LAN)?

Uses fiber optic cables for connections Signup and view all the answers

What is a central element in a client-server architecture?

Server providing services to clients Signup and view all the answers

What vulnerability might a Wireless Local Area Network (WLAN) face compared to a wired network?

Signal interference Signup and view all the answers

The connection used in a Metropolitan Area Network (MAN) most typically involves which of the following?

Private leased lines Signup and view all the answers

Which type of network is defined by its use of radio signals to connect devices rather than physical cables?

Wireless Local Area Network (WLAN) Signup and view all the answers

Which of the following is NOT an advantage of using a network?

Reduced reliance on a main server Signup and view all the answers

What are the main components in a client-server architecture?

Client and Server Signup and view all the answers

Which of the following represents a security vulnerability associated with networks?

Vulnerability to hackers Signup and view all the answers

In the context of networks, what best describes a node?

Any device capable of sending or receiving data Signup and view all the answers

What is one disadvantage of using a computer network?

Complexity of management for large networks Signup and view all the answers

Which scenario presents a disadvantage related to network failure?

If the main server breaks, the system cannot function Signup and view all the answers

How do communications protocols contribute to computer networks?

They define rules for data transmission Signup and view all the answers

Why might network implementation and maintenance be considered expensive?

Due to costs associated with cabling and servers Signup and view all the answers

Study Notes

Storage Area Network (SAN)

SAN is a high-speed sub-network connecting shared storage devices.
Enhances performance and availability of disk arrays and tape libraries.

Virtual Private Network (VPN)

VPN provides a secure tunnel for data transmission between devices.
Extends a private network over a public network, safeguarding user data.
Hides IP address from external parties, enhancing online anonymity.
Commonly utilized by employees to access corporate intranet remotely.
VPN encrypts all data, increasing reliability during transmission.
Offers cost savings on equipment and maintenance, as it operates via the Internet.

Network Topology

Defines the arrangement and structure of a network.
Networks facilitate data sharing and communication among connected devices.

Advantages of Networks

Simplifies file and data sharing among users.
Enables resource sharing, such as printers and Internet connections.
Facilitates communication through emails, messaging, and video conferencing.
Centralized data storage aids in accessibility and backup.
Allows users to maintain a consistent environment across multiple workstations.
Helps bridge geographical distances for collaborations.

Disadvantages of Networks

Vulnerable to security threats like hacking and viruses.
Dependency on main server; server failure disrupts operations.
Network issues can hinder task execution.
Complexity increases with large networks, requiring specialized management.
Costly implementation and maintenance, including infrastructure setup.
Can lead to increased data traffic and potential network congestion.

Nodes in a Network

A node refers to any device within a network capable of sending or receiving data.
Each node functions as an endpoint for data transmission.

Types of Computers in a Network

Clients: Standard workstations or computers used by individuals for tasks.
Servers: Powerful machines that provide services and resources to clients.

Types of Networks

Local Area Network (LAN): Connects computers in a limited area (e.g., building).
Metropolitan Area Network (MAN): Spans several buildings within a city or town.
Wide Area Network (WAN): Covers large geographical distances; the Internet is the largest WAN.
Personal Area Network (PAN): Facilitates communication between devices near an individual.
Storage Area Network (SAN): Dedicated to connecting storage devices.
Wireless Local Area Network (WLAN): A LAN using radio signals (WiFi) instead of cables.
Virtual Private Network (VPN): Securely connects devices over public networks.

Local Area Network (LAN)

Interconnects computers in confined areas like homes, schools, or offices.
Typically a private network using wired or low-power wireless connections.

Wireless Local Area Network (WLAN)

Utilizes WiFi to connect devices wirelessly.
Employs high-frequency radio waves, often including Internet access points.
Wireless connection range is approximately 50 meters, affected by obstacles.

Wide Area Network (WAN)

Extends across large distances, often linking multiple LANs together.
Utilizes technologies like fiber optics and satellite links for connections.

Metropolitan Area Network (MAN)

Larger than a LAN but smaller than a WAN, spanning multiple buildings within a city.

Personal Area Network (PAN)

Enables communication between nearby devices, with options for wired (USB) or wireless (Bluetooth) connections.

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Description

This quiz explores the concepts of Storage Area Networks (SAN) and Virtual Private Networks (VPN). Understand how SAN enhances storage devices and how VPN secures connections over public networks. Test your knowledge on these critical networking technologies.