Pre-Test: Networking Concept

​Networking Concept

​MARK JULIUS M. GALAPON

Teacher I

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Lesson 1: Fundamentals of Networking

Networking is the practice of linking two or more computing devices together for the purpose of sharing data. Networks are built with a mix of computer hardware and computer software.

THINK ABOUT IT!

Study the picture below and answer the guide questions.

Open Ended

What can you say on the picture? s shown in the picture?

Why are computers being networked?

How do networked computers transmit files and data through network cables?

Why do we need to configure network devices used in computer network system?

5Why do we need to configure security or firewall in computer network system? 

Multiple Choice

What do you call this device?

• router

• switch

• hub

• internet

Multiple Choice

What do you call this device?

• switch

• hub

• router

• LAN cable

Multiple Choice

One of the advantages of switch.

• Does not waste bandwidth.

• Uses half duplex.

• Connect to wifi.

• no answer

Basic Computer Network Information

A network is a group of things that are connected. In a computer network, the things that are connected are computers. A computer network can be as small as two computers but there is no maximum size, and many networks have hundreds or thousands of computers. There are three main reasons for connecting computers in a network: 

✓ Share information. This can be messages such as e-mail, or it can be files that are stored in one computer and used by someone at a different computer.

 

✓ Share resources. A printer that can be accessed from different computer systems is a shared resource.It is an Internet connection used by more than one computer.

 

 ✓ Centralized control. In most offices, the management determines what the computers may be used for and what kind of resources and support they need. This is much easier to deal with if the computers are connected. 

Different Types of Network

There are several different types of computer networks. Computer networks can be characterized by their size and purpose. 

Types of networks based on size

1. Personal Area Network.

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A personal area network, or PAN, is a computer network organized around an individual person within a single building. 

Types of networks based on size

✓ Send a document to the printer in the office upstairs while you are sitting on the couch with your laptop.

✓ Upload a photo from your cell phone to your desktop computer.

✓ Watch movies from an online streaming service to your TV. 

​Personal Area Network

Types of networks based on size

2.Local Area Network .

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A local area network, or LAN, consists of a computer network at a single site, typically an individual office building.

Types of networks based on size

A LAN is very useful for sharing resources, such as data storage and printers. LANs can be built with relatively inexpensive hardware, such as hubs, network adapters and Ethernet cables 

​LAN

​LAN

Multiple Choice

The computers or devices is connected to the main router or switch. This kind of topology is commonly seen in house and offices.

• start topology

• point to point topology

• bus topology

• ring topology

Multiple Choice

Coaxial cable is used to connect the computer without the use of router and switch.

• point to point topology

• ring topology

• bus topology

• star topology

Multiple Choice

In this kind of topology 2 computer is connected via LAN cable. The most common topology.

• bus topology

• ring topology

• ring topology

• point to point topology

Types of networks based on size

3. Metropolitan Area. Network

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A metropolitan area network, or MAN, consists of a computer network across an entire city, college campus or small region. A MAN is larger than a LAN, which is typically limited to a single building or site.  

​Metropolitan Area Network

​Metropolitan Area Network

​Metropolitan Area Network

Types of networks based on size

4. Wide Area Network.

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A wide area network, or WAN, occupies a very large area, such as an entire country or the entire world. A WAN can contain multiple smaller networks, such as LANs or MANs.

Types of networks based on size

The Internet is the best-known example of a public WAN sometimes as Global Area Network (GAN). 

​Wide Area Network

​Wide Area Network

Types of networks based on purpose

1. Storage Area Network A Storage Area

Network (SAN) is a specialized, high-speed network that provides block-level network access to storage.

Types of networks based on purpose

SANs are typically composed of hosts, switches, storage elements, and storage devices that are interconnected using a variety of technologies, topologies, and protocols.  

SANs are often used to:

✓  Improve application availability (e.g., multiple data paths)

✓  Enhance application performance (e.g., off-load storage functions, segregate networks, etc.)

Types of networks based on purpose

2. Enterprise Private Network

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An enterprise private network (EPN) is a computer network that helps enterprise companies with a number of disparate offices connect those offices to each in a secure way over a network. It is mainly set up to share computer resources. 

Types of networks based on purpose

Some of the advantages of an enterprise private network are:

✓ The messages are secure because they are encrypted.

✓ They  are     cost    effective and scalable.

✓ They help to centralize IT resources.

✓They enable business continuity.

​Enterprise Network

Types of networks based on purpose

Private Virtual Network  

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A virtual private network, or VPN, is an encrypted connection over the Internet from a device to a network.

Types of networks based on purpose

It prevents unauthorized people from eavesdropping on the traffic and allows the user to conduct work remotely. VPN technology is widely used in corporate

environments. 

Multiple Choice

A computer network that is designed to connect multiple smaller networks together. Your internet service provider is an example of this type of Network:

• LAN

• WAN

• MAN

• DSWD

Multiple Choice

It is the most basic networking device that connects multiple computers or either networking devices together and has no routing tables or intelligence on where to send information and broadcasts all network data across each connection.

• Access Point

• Hub

• Router

• Wireless Device

Multiple Choice

Which is not TRUE about networking?

• Each node can request for services and can also provide services.

• The client requests for service and server respond with the service.

• The data is stores in a centralized server.

• The client-server is expensive to implement.

Multiple Choice

wide area network, or WAN, occupies a very large area, such as an entire country or the entire world.

• Wide Area Network

• Local Area Network

• Personal Area Network

• Various Private Network

Multiple Choice

Which of the following applies/uses a crossover, LAN Cable?

• Router to PC

• Hub to PC

• Desktop to Laptop

• Router to Switch

Multiple Choice

The network in a school or office is usually a ..

• LAN

• WAN

• PAN

• VPN

Multiple Choice

What type of cable is used to connect same type of devices?

• Crossover

• Straight Through

• Rollover

• LAN Cable

Multiple Choice

These types of networks are larger than LANs but smaller than WANs –

and incorporate elements from both types of networks in geographic

area typically in town or city.

• LAN

• MAN

• WAN

• GAN

Multiple Choice

What type of LAN network topology is this?

• star topology

• mesh topology

• bus topology

• ring topology

Multiple Choice

What is a computer called when it is not connected to a network?

• A standalone

• A client

• A server

• Hub

Multiple Choice

What do you call the cable that connects Local Area Network?

• RJ45

• LAN Cable

• UTP Cable

• coaxial cable

Multiple Choice

Which of the following is not considered as the main reason for connecting

computers in a network?

• share information

• share resources

• centralized control

• install applications

Multiple Choice

LAN is the abbreviation for _______________________.

• Local Area Network

• Local Area Networking

• Long Area Network

• No Answer

Multiple Choice

Can we connect 2 computers without router or switch?

• Yes

• No

• Maybe

• No Answer