Bus 230 Chapt 10 T/F

In a networked environment, no authorized computer user can access data and information stored on other computers on the network.

Users connected to a network have access to software on the network.

The main differentiation among network classifications is whether they are wired or wireless.

An extranet essentially is a small version of the Internet that exists within an organization.

A WLAN cannot communicate with a wired LAN.

A MAN usually is managed by a consortium of users or by a single network provider that sells the service to the users.

On a client/server network, the client sometimes is called a host computer.

Although it can connect any number of computers, a client/server network typically provides an efficient means to connect 10 or fewer computers.

When users log off a P2P network, other users still can access their hard disks.

A star network consists of a single central cable, to which all computers and other devices connect.

Bus networks are unpopular on LANs because they are expensive and difficult to install.

The star topology is primarily used for LANs but it is also used in WANs.

Data transmitted on a ring network travels from device to device around the entire ring, in both directions.

On a ring network, if the hub fails the entire network is inoperable until the hub is repaired.

As data move through a network from one program to another, it can use at most one kind of network standard.

Depending on the transmission media used, Ethernet networks have data transfer rates that range from 10 Gbps for small office/home users to 1000 Gbps for enterprise users.

Each token ring network has several tokens.

On a token ring network, a packet is a special series of bits that function like a ticket, allowing the device with the packet to transmit data over the network.

With TCP/IP, each packet contains data as well as the recipient (destination), origin (sender), and the sequence information used to reassemble the data at the destination.

Wi-Fi networks easily can be integrated with wired Ethernet networks.

Hot spots offer mobile users the ability to connect to the Internet with their Wi-Fi enabled wireless computers and devices.

One advantage of Bluetooth is its high bandwidth.

Contactless payment is a popular use of UWB technology.

Communications software usually is bundled with the operating system or communications devices.

Consumers can purchase blank NFC tags at a reasonable cost and easily program them to perform certain actions.

With ISDN, the same telephone line that could carry only one computer signal now can carry three or more signals at once through the same line, using a technique called multiplexing.

ADSL is ideal for Internet access because most users upload more information than they download from the Internet.

ISDN is more widely used now than in the past.

Data, instructions, and information travel along transmission media in either analog or digital form, depending on the transmission media.

With FTTP service, an optical terminal at your location receives the signals and transfers them to a router connected to a computer.

Phone networks, the Internet, and other networks with large amounts of traffic use ATM.

ISDN and DSL are more widely used than cable.

A dial-up modem connected to a sending computer converts the computer's digital signals into analog signals.

A DSL modem converts digital signals to analog signals and vice versa so that data can travel along an analog phone line.

Some smartphones can function as a wireless modem, called a mobile hot spot, when tethered to a personal computer.

Some mobile users have a wireless modem that uses a mobile phone provider's network to connect to the Internet wirelessly from a computer or other mobile device.

Wireless access points have high-quality antennas for optimal signals.

Only small networks use routers.

IP hijacking is one of the largest Internet security threats.

One of the more widely used transmission media for network cabling and landline phone systems is twisted-pair cable.

Most of today's computer networks use coaxial cable.

In a fiber-optic cable, each strand, called an optical fiber, is as thin as a human hair.

Fiber-optic cables have the capability of carrying significantly more signals than wire cables.

Wireless transmission media are used when it is impossible to install cables.

Infrared (IR) is a wireless transmission medium that sends signals using infrared light waves.

For radio transmissions, a transmitter is needed to send the broadcast radio signal and a receiver to accept it.

The fifth generation of cellular transmissions is expected to provide artificial intelligence capabilities on wearable devices.

Transmission from a satellite to an earth-based station is called an uplink.

A GPS receiver is a handheld, mountable, or embedded device that contains an antenna, a radio receiver, and a processor.