Network Access Objectives Quiz

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Questions and Answers

What is a major component of wireless network administration?

Antenna design

Network security (correct)

Physical layer

Data link layer

In a WLAN operating in half-duplex, what does it mean for the wireless medium?

It increases the speed of data transmission

It allows multiple devices to send data simultaneously

It enhances the signal reception for all devices

It reduces bandwidth as more users access the WLAN (correct)

Which physical layer media are most popular for network deployments?

Radio signals

Antennas

Wireless medium

Copper and fiber (correct)

What role does a Wireless Access Point play in a WLAN?

Connects to the Ethernet network infrastructure Signup and view all the answers

What is required for Wi-Fi certification of products?

Usage of IEEE 802.11 standards Signup and view all the answers

How do more users needing access to a WLAN affect bandwidth?

Reduces bandwidth available for each user Signup and view all the answers

What is the purpose of an Integrated Service Router (ISR) in a home network setup?

To provide wired and wireless connectivity Signup and view all the answers

Which type of NIC would a tablet most likely have for network connectivity?

WLAN NIC Signup and view all the answers

What happens to the wireless performance of a device as it moves further away from a wireless access point?

The wireless signal weakens Signup and view all the answers

Which device would require an Ethernet NIC to connect to a network?

Network printer Signup and view all the answers

In terms of network performance, what can be expected when a wireless device is far away from an access point?

Weaker signal and reduced bandwidth Signup and view all the answers

What are some common components of an Integrated Service Router (ISR)?

Switching component and Access Point Signup and view all the answers

What is a requirement for any network communications to occur?

Establishing a physical connection to a local network Signup and view all the answers

In a wired network setup, where are desktop or laptop computers usually connected?

To a shared switch via cable Signup and view all the answers

How is data transmitted in wired network connections?

Through a physical cable Signup and view all the answers

What type of connectivity do laptops, tablets, and smartphones often use in businesses?

Wireless connections using radio waves Signup and view all the answers

What is needed for devices on a wireless network to have wireless capability?

Connection to a wireless access point (AP) Signup and view all the answers

How does data get transmitted in wireless connections?

Using radio waves Signup and view all the answers

Study Notes

Network Security

Unauthorized devices and users can gain access to transmissions in a wireless network, making network security a critical component of wireless network administration.

Shared Medium

WLANs operate in half-duplex, allowing only one device to send or receive at a time.
The wireless medium is shared among all wireless users, resulting in less bandwidth for each user as more users access the WLAN simultaneously.

Types of Wireless Media

IEEE and telecommunications industry standards cover both data link and physical layers for wireless data communications.
Physical layer specifications include data to radio signal encoding, frequency and power of transmission, signal reception and decoding requirements, and antenna design and construction.

Wi-Fi

Wi-Fi is a trademark of the Wi-Fi Alliance, used with certified products based on IEEE 802.11 standards.

Wireless Access Point

Concentrates wireless signals from users and connects to the existing copper-based network infrastructure, such as Ethernet.
Switch devices and wireless access points are often separate dedicated devices within a network implementation.
Some devices offer both wired and wireless connectivity, such as home integrated service routers (ISRs) that include a switching component and an AP.

Network Interface Cards

Connect a device to the network, with Ethernet NICs used for wired connections and WLAN NICs used for wireless connections.
An end-user device may include one or both types of NICs, such as a network printer with an Ethernet NIC or a tablet with a WLAN NIC.

Physical Connections

Not all physical connections are equal in terms of performance level, with wireless devices experiencing degradation in performance based on distance from the wireless access point.
Wireless signals weaken with distance, resulting in less bandwidth or no wireless connection at all.

Network Access Objectives

Describe the functions of the physical layer and standards and protocols that manage transmission of data across local media.
Describe the functions of the data link layer and associated protocols.
Identify network devices and cabling.
Simulate connecting wired and wireless LAN.

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Description

Test your knowledge on the functions of the physical layer, standards, protocols, data link layer, network devices, cabling, and connecting wired and wireless LAN. This quiz covers topics related to managing data transmission across local media.