Question 1

The ____ band is used by commercial AM radio stations.

Accepted Answer

Commercial AM radio stations primarily use the medium frequency band for broadcasting their signals. This is generally within the range of 530 kHz to 1700 kHz. The other options are not used by commercial AM radio stations for broadcasting.

Question 2

One of the default SSIDs used by D-Link is ____.

Accepted Answer

"default" is one of the default SSIDs used by D-Link, as stated in the question.

Question 3

CSMA/CD is used at the data link layer on wireless networks.

Accepted Answer

CSMA/CD is used on wired networks, not wireless networks. Wireless networks use a protocol known as Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA).

Question 4

Wireless routers are designed so that they do not interfere with wireless telephones.

Accepted Answer

The answer of Wireless routers are designed so that they...

Question 5

A(n) ____ is a transceiver that connects to a network via an Ethernet cable; it bridges the wireless LAN with the wired network.

Accepted Answer

An access point (AP) is a transceiver that connects to a network via an Ethernet cable and bridges the wireless LAN with the wired network. This enables devices on the wireless network to communicate with devices on the wired network. A wireless network interface card (WNIC) is a device that allows a computer to connect to a wireless network, but it does not bridge the wireless and wired networks. A switch and a router are networking devices, but they do not bridge the wireless and wired networks in the same way that an access point does.

Question 6

The ____ standard, also referred to as Wi-Fi, operates in the 2.4 GHz range with an increased throughput from 1 or 2 Mbps to 11 Mbps.

Accepted Answer

The standard referred to as Wi-Fi and operating in the 2.4 GHz range with an increased throughput from 1 or 2 Mbps to 11 Mbps is 802.11b. The other choices operate on different frequencies or have different maximum throughput rates.

Question 7

Each frequency band contains ____; if they overlap, interference could occur.

Accepted Answer

Each frequency band contains channels for communication. If the channels overlap, interference could occur, which can negatively impact communication quality. SSIDs are used in wireless networks for identification, guard bands are used to reduce interference between adjacent frequency bands, and cycles refer to the frequency of the signal.

Question 8

One of the default SSIDs used by Linksys is ____.

Accepted Answer

"linksys" is a commonly used default SSID by Linksys routers.

Question 9

In 802.11, an addressable unit is called a ____.

Accepted Answer

In 802.11, a station (STA) is an addressable unit, also known as a wireless client, that can connect to a wireless network. A STA can be a laptop, smartphone, tablet, or any wireless device that can transmit and receive data over a wireless connection. Therefore, option C is the best choice for this question.

Question 10

The 802.11 standard applies to the Physical layer of the OSI model, which deals with wireless connectivity issues of fixed, portable, and moving stations in a local area, and the Media Access Control (MAC) sublayer of the ____.

Accepted Answer

The 802.11 standard applies to the Data Link layer of the OSI model, specifically the MAC sublayer which handles medium access control and data packet transmission.

Question 11

____ defines how data is placed on a carrier signal.

Accepted Answer

Modulation is the process of imposing information from a message signal onto a carrier signal by adjusting one or more characteristics of the carrier signal. These characteristics can be amplitude, frequency, or phase. Therefore, modulation defines how data is placed onto a carrier signal, making option A the correct choice.

B) Multiplexing involves combining multiple signals into a single signal to share a medium, but it does not specifically address how data is placed on the carrier signal.

C) Digitization is the process of converting analog signals into digital signals. While important in the transmission of data, it does not specifically address how data is placed on the carrier signal.

D) Adaptation is too general and does not specifically address how data is placed on the carrier signal.

Question 12

There are measures for preventing radio waves from leaving or entering a building so that wireless technology can be used only by people located in the facility.

Accepted Answer

Yes, there are measures such as using Faraday cages or blocking materials to prevent radio waves from leaving or entering a building. This can create a secure wireless environment for people inside the facility.

Question 13

The default SSID used by Cisco is ____.

Accepted Answer

The default SSID used by Cisco is "Tsunami".

Question 14

It's possible to have a wireless network that doesn't connect to a wired network.

Accepted Answer

A wireless network can be created independently without the need for a wired network connection. This type of network is commonly used in homes or small businesses where there is no need for multiple devices to share the same network resources.

Question 15

In a WPAN, the maximum distance allowed between each device is usually ____ meters.

Accepted Answer

WPAN (Wireless Personal Area Network) typically allows a maximum distance of about 10 meters between devices, which is suitable for short-range communication.

Question 16

The 802.11b standard introduced Wired Equivalent Privacy (WEP), which gave many users a false sense of security that data traversing the WLAN was protected.

Accepted Answer

The WEP protocol used in the 802.11b standard was later found to be easily crackable and did not provide strong security for WLANs. As a result, it is not recommended for use in modern networks.

Question 17

The ____ standard has improvements to address the problem of interference.

Accepted Answer

802.11e is a standard that includes enhancements for Quality of Service (QoS) which helps in managing interference and improving the performance of wireless networks.

Question 18

____ Project 802 was developed to create LAN and WAN standards.

Accepted Answer

IEEE (Institute of Electrical and Electronics Engineers) developed Project 802 to create LAN (Local Area Network) and WAN (Wide Area Network) standards. The project resulted in the creation of the widely used Ethernet standards, among others. EIA/TIA (Electronic Industries Alliance/Telecommunications Industry Association) develops telecommunications standards, ISO (International Organization for Standardization) develops standards for various industries, and ITU-T (International Telecommunication Union-Telecommunication Standardization Sector) develops standards for telecommunications networks.

Question 19

The ____ standard can achieve a throughput of 54 Mbps.

Accepted Answer

802.11g standard can achieve a maximum throughput of 54 Mbps, which is higher than the 11 Mbps offered by the 802.11b standard. The 802.11e standard is for Quality of Service (QoS) management, and the 802.11i standard is for security enhancements.

Question 20

____ is the most popular type of WLAN technology.

Accepted Answer

Spread spectrum is the most popular type of WLAN technology as it allows multiple devices to share the same frequency band by spreading the signal across a wide frequency range. This reduces interference and provides a more reliable connection. Infrared (IR) and narrowband are not commonly used for WLAN and microwave frequencies are typically reserved for point-to-point communications.

Quiz 11: Hacking Wireless Networks