Networking Concepts: Hubs, Switches, and Extranets

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Questions and Answers

What is the primary function of a network hub?

To route data selectively to specific devices

To encrypt data frames for secure transmission

To amplify the signal for long-distance transmission

To broadcast data to every device connected to it (correct)

What occurs when a data frame is transmitted to a hub?

The hub resends the data only to the intended recipient

The hub stores the data and sends it later

The hub immediately resends it to all connecting links (correct)

The hub modifies the data frame before resending

How does a hub differ from a switch in network functionality?

A hub can handle more data traffic than a switch

A hub establishes direct connections between devices

A hub broadcasts data to all devices, while a switch routes data intelligently (correct)

A hub requires more configuration than a switch

Which of the following statements about hubs is incorrect?

Hubs only send data to devices that need it Signup and view all the answers

In a network utilizing a hub, what happens to network security?

Security decreases because all devices receive all data Signup and view all the answers

What is one key function of a switch in a network?

Determines if data should remain on a LAN or be transferred elsewhere. Signup and view all the answers

Which layer of the OSI model does a switch operate on?

Layer 2: Data Link Signup and view all the answers

How does a switch manage data transfer within a LAN?

By sending data only to the devices that need it. Signup and view all the answers

Which of the following statements about switches is incorrect?

Switches encrypt data for transmission security. Signup and view all the answers

What advantage does a switch have over a hub in a network?

Switches improve network security by isolating data traffic. Signup and view all the answers

What is a primary function of a voice/data/fax modem?

File transfer and sending faxes Signup and view all the answers

Which associated task is NOT typically performed by a voice/data/fax modem?

Receiving email attachments Signup and view all the answers

How does a voice/data/fax modem primarily handle voice communication?

Using computer software Signup and view all the answers

In addition to file transfer, what else can a voice/data/fax modem be used for?

Sending and receiving faxes Signup and view all the answers

When utilizing a voice/data/fax modem, which of the following is essential for operation?

Specific software applications Signup and view all the answers

What is the primary purpose of an extranet?

To allow secure access to company data for individuals from other organizations. Signup and view all the answers

Which of the following is a correct example of an extranet usage?

A business providing access to outside suppliers and contractors. Signup and view all the answers

Which of the following statements is true regarding extranets?

Extranets require strict security measures to protect shared data. Signup and view all the answers

What differentiates an extranet from an intranet?

An extranet allows access to users from outside the organization. Signup and view all the answers

Who would be the typical users of an extranet?

Employees and stakeholders from partner organizations. Signup and view all the answers

What is a key feature that distinguishes routers from bridges?

They manage traffic by using a routing table. Signup and view all the answers

Which of the following describes how routers determine where to send data packets?

By referencing a routing table based on the IP address. Signup and view all the answers

What types of networks can routers connect?

Any type of network including star and token ring. Signup and view all the answers

What does a routing table store in relation to network data forwarding?

The relationship between IP addresses and next hop destinations. Signup and view all the answers

Why are routers considered more sophisticated than bridges?

They can connect disparate network types. Signup and view all the answers

Study Notes

Hubs

Hubs are multi-port repeaters that broadcast data to all connected devices.
When a data frame is transmitted to a hub, it is immediately re-sent to all connected links.
Hubs operate on Layer 2 of the OSI model.

Switches

Switches are more sophisticated than hubs, determining whether data remains on a LAN or is transferred to a specific device.
Switches forward data based on the destination hardware (MAC) address.

Extranets

Extranets provide secure access to company data for individuals outside the organization.
Examples include providing access to external suppliers or contractors.

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Description

Test your understanding of essential networking components like hubs, switches, and extranets. This quiz covers how these elements function within a network and their roles in data transmission and security. Perfect for students in networking courses or professionals looking to refresh their knowledge.