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38 terms

Data Communications And Computer Networks

Chapter 7
STUDY
PLAY
was the first commercially available local area network system and remains, without a doubt, the most popular local area network system today
Ethernet
In a bus/tree topology, connecting to the cable requires a simple device called a(n)
tap
A ____ is a device that interconnects two segments of local area networks and acts as a filter
switch
In ____ segment networks, a switch may be directly connected to a workstation, and the switch connects to the hub
dedicated
Whether shared or dedicated segments are involved, the primary goal of a(n) ____ is to isolate a particular pattern of traffic from other patterns of traffic or from the remainder of the network
switch
The switch operates in place of a
hub
was a system designed for twisted pair wiring, but with only a 1-Mbps data transfer rate for 500 meters
1Base5
The ____ sublayer is primarily responsible for logical addressing and providing error control and flow control information
logical link control (LLC)
The IEEE ____ standard is said to be capable of 100 Mbps wireless transmissions
802.11n
A relatively new standard, IEEE ____, was designed to allow multiple devices to intercommunicate and work together to create a virtual LAN
802.1Q
The most popular contention-based protocol is ____
carrier sense multiple access with collision detection (CSMA/CD)
____ cabling has become the preferred medium for star-wired bus topologies
Twisted pair
Depending on user requirements, a switch can interconnect two different types of CSMA/CD network segments: ____ segments and dedicated segments
shared
The ____ design of a network determines how the data moves around the network from workstation to workstation
logical
The interval during which the signals propagate down the bus and back is the ____
collision window
The ____ sublayer contains a header, computer (physical) addresses, error-detection codes, and control information
medium access control (MAC)
Two different signaling technologies can be used with a bus network: baseband signaling and ____ signaling
broadband
The ____ is used to connect local area networks to wide area networks
router
The ____ topology consists of a simple cable, or bus, to which all devices attach
bus/tree
If a switch has eight 100-Mbps ports, the backplane has to support a total of ____ Mbps
800
A(n) ____ protocol is the software that allows a workstation to place data onto a local area network
medium access control
The local area network software called a ____ server provides workstations with the authorization to access a particular printer, accepts and queues prints jobs, prints cover sheets, and allows users access to the job queue for routine administrative functions
print
One of the more interesting applications for a dedicated segment network and a switch is creating a
virtual LAN
The ____ LAN is geared toward the small office or home office
SOHO
A ____ is a device that interconnects two or more workstations in a star-wired bus local area network and immediately retransmits the data it receives from any workstation out to all other workstations connected
hub
A local area network performs file serving when it's connected to a workstation with a large storage disk drive that acts as a central storage repository, or ____
file
The ____ standard was one of the first Ethernet standards approved
10Base5
More complex bus topologies consisting of multiple interconnected cable segments are termed ____
trees
a European standard, is capable of transmitting data at a theoretical 54 Mbps using the 5-GHz frequency range
HiperLAN/2
The IEEE 802.3z standards are also known as ____ Ethernet
Gigabit
In the ____, or ad hoc, layouts configuration, there is no access point at the center of a cell
peer-to-peer
Early local area networks transmitted data at only ____ million bits per second
10
With ____, you can send electrical power over the Ethernet connection
power over Ethernet (PoE)
The ____ rule states that between any two nodes on a network, there can be a maximum of only five segments (the sections between repeaters), connected through four repeaters, and only three of the five segments may contain user connections
5-4-3
In the ____ layout configuration, multiple cells are supported by multiple access points, as in a cellular telephone network
multiple-cell
A local area network that is not based primarily on physical wiring but uses wireless transmissions between workstations is an
wireless LAN
When two or more hubs are interconnected and a workstation transmits data, all the workstations connected to all the hubs receive the data. This is an example of a(n) ____
shared network
A ____ system transmits 10-Mbps baseband (digital) signals over twisted pair for a maximum of 100 meters per segment length
10BaseT