Term
| t/f Most us networks use coaxial cable as their physical medium |
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Definition
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Term
| t/f Bus networks are difficult to troubleshoot because it is a challenge to identify fault locations |
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Definition
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Term
| t/f The ring topology forms the basis for modern Ethernet and fast Ethernet networks |
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Definition
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Term
| A collapsed backbone provides network administrators with the ability to segregate workgroups and, therefore, manage them more efficiently |
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Definition
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Term
| t/f FDDI can connect lans located in multiple buildings, such as those on a college campus |
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Term
a___ is a layout, or pattern, of nodes in a network:: a serial backbone b physical topology c enterprise
d distributed backbone |
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Definition
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Term
| a___ topology consists of a single cable connecting all nodes in a network without intervening connectivity devices:: a star b physical c bus d ring |
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Definition
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Term
| in a ___ topology, each node is connected to the two nearest nodes so the entire network forms a circle:: a ring b bus c star d star-wired |
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Definition
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Term
| in a ___ topology, every node in the network is connected through a central device, such as a hub or switch:: a ring b bus c star d network |
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Definition
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Term
| a ___ consists of a number of connectivity devices connected to a series of central connectivity devices , such as hubs, switches, or routers, in a hierarchy.:: A collapsed backbone B Serial backbone C Distributed backbone D parallel backbone |
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Definition
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Term
| in ___, a connection established between two network nodes before they begin transmitting data.:: A curcuit switching B packet switching C message switching D passive scanning |
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Definition
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Term
| an __ is the length of time data takes to travel from one point on the segment to another point:: A access method B data propagation delay C probe D beacon frame |
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Definition
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Term
| ___ enables multiple nodes to simultaneously transmit and recieve data over different logical network segments:: A ATM B LAN Emulation C QoS D Switvhed Ethernet |
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Definition
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Term
| in ___, a 3-byte packet is transmitted from one node to another node in a circular fashion around the ring: A packet B token passing C reassociation D circuit switching |
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Definition
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Term
| Which of the following encapsulates incoming Ethernet or token ring frames, then converts them into ATM cells for transmission over an ATM network:: A Lan emulation B CSMA/CA C Power over ethernet D ethernet 2 |
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Definition
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Term
| as long as a station is on and has its wireless protocols running , it periodically surveys its surroundings for evidence of an access point, a task known as ___ :: A switching B probing C Scanning D reassociation |
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Definition
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Term
| in ___, a wireless station listens on all channels within its frequency range for a special signal, known as a beacon frame, issued from an access point :: A probing B reassociation C circuit switching D passive scanning |
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Definition
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Term
| multiple bluetooth piconets can be combined to form a___:: A packet B Scatternet C Serial Backbone D Ethernet |
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Definition
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Term
| the router or switch that makes up the collapsed backbone must contain___ to handle the heavy traffic::A frames B piconets C Terminators D multiprocessors |
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Definition
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Term
| __ occurs when two nodes simultaneously check a channel, determine that it is free, and begin to transmit:: A Jamming B Collision C Circuit switching D Association |
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Definition
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Term
| ___ is an ethernet frame type developed by DEC, Intel, and Xerox before the IEEE began to standardize Ethernet. A Ethernet2 B ethernet3 C IPX d SPX |
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Definition
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Term
| Which of the following standards specifies a method for supplying electrical power over ethernet connections:: A ethernet_snap B ethernet2 C PoE D 802.3af |
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Definition
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Term
| Which of the following maintains the timing for ring passing, monitors token and frame transmission, Detects lost tokens, and corrects errors when a timing error or other disruption occurs on a token ring network: A Terminator B Active monitor C Bluetooth D Connector |
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Definition
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Term
| ___ uses a double ring of multitude or single-mode fiber to transfer data at speeds of 100Mbps:: A ATM B SPX C FDDI D IPX |
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Definition
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Term
| Which of the following is considered a Hybrid Topology:: A star B Bus C Star-wired ring D Ring |
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Definition
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Term
| in networking, the term___ refers to an entire organization, including its local and remote offices, a mixture of computer systems, and a number of departments:: A enterprise B company C industry D business |
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Definition
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Term
| At the end of each buss network are 50 n-ohm resistors known as ____________ |
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Definition
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Term
| ___________________ switchiong establishes a connection between two devices, transfers the information to the second device, and then breaks the connection |
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Definition
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Term
| _____________ switching breaks data into packets before they are transfered |
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Definition
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Term
| A network's ___________ is its method of controlling how network nodes access the communications chanel |
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Definition
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Term
| On an ethernet network, a ___________ is the portion of a network in which collisions occur if two nodes transmit data at the same time |
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Definition
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Term
Topology that uses a router or switch as a single central connection point for multiple subnetworks
A network backbone
B Daisy Chain
C collapsed backbone
D logical topology
E Switching
F CSMA/CD
G ATM
H Virtual Circuits
G piconet |
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Definition
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Term
referes to the way data is transmitted between nodes
a: network backbone
b: daisey chain
c: collapsed backbone
d: logical topology
e: switching
f: csma/cd
g: ATM
h: Virtual Circuits
I: Piconet |
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Definition
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Term
the cabling that connects hubs, switches, and routers on a network.
a: network backbone
b: daisey chain
c: collapsed backbone
d: logical topology
e: switching
f: csma/cd
g: ATM
h: Virtual Circuits
I: Piconet |
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Definition
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Term
the cabling that connects hubs, switches, and routers on a network.
a: network backbone
b: daisey chain
c: collapsed backbone
d: logical topology
e: switching
f: csma/cd
g: ATM
h: Virtual Circuits
I: Piconet |
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Definition
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Term
a uti networking standard describing data link layer protocols for both network access and signal multiplexing.
a: network backbone
b: daisey chain
c: collapsed backbone
d: logical topology
e: switching
f: csma/cd
g: ATM
h: Virtual Circuits
I: Piconet |
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Definition
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Term
Linked series of devices
a: network backbone
b: daisey chain
c: collapsed backbone
d: logical topology
e: switching
f: csma/cd
g: ATM
h: Virtual Circuits
I: Piconet |
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Definition
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Term
connections between network nodes that, although based on potentially disparate physical links, Logically appear to be direct, dedicated links between those nodes
a: network backbone
b: daisey chain
c: collapsed backbone
d: logical topology
e: switching
f: csma/cd
g: ATM
h: Virtual Circuits
I: Piconet |
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Definition
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Term
the access method used in ethernet
a: network backbone
b: daisey chain
c: collapsed backbone
d: logical topology
e: switching
f: csma/cd
g: ATM
h: Virtual Circuits
I: Piconet |
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Definition
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Term
a component of a network's logical topology that determines how connections are created between nodes
a: network backbone
b: daisey chain
c: collapsed backbone
d: logical topology
e: switching
f: csma/cd
g: ATM
h: Virtual Circuits
I: Piconet
< |
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Definition
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Term
A blue tooth pan
a: network backbone
b: daisey chain
c: collapsed backbone
d: logical topology
e: switching
f: csma/cd
g: ATM
h: Virtual Circuits
I: Piconet |
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Definition
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Term
| what are the disadvantages of networks based on bus topology |
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Definition
As you add more nodes the network performance goes down.
as you add more nodes the slower the network will be due to a shared connection
it is hard too identify problems in a bus topology
Any break in the line will effect the whole network |
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Term
| Why do you think that the star topology has become the most popular fundamental layout used in contemporary lans |
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Definition
easily scalable with their centralized connection point.
easily moved, isolated or integrated
they have a high fault tolerance. |
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Term
| what are some advantages of using packet switching to connect nodes on a network. |
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Definition
it doesn't waste band width by keeping a connection open until it reaches it's destination.
it doesnt require devices in between to process any information |
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Term
| explain the meaning of the terms Carrier Sense and Multiple Access. |
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Definition
Carrier sense - Ethernet Nic's listen (sense) the network for no signal (carrier) over the communication channel before they send.
Multiple Access - several ethernet nodes can be monitoring traffic, or access media at the same time |
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Term
| what is the purpose of the 7-byte preamble and 1-byte start-of-frame delimiter on an Ethernet frame |
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Definition
preamble tells the receiving node when the data is coming.
start-of-frame identifies where to data begins |
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Term
| what are the advantages and disadvantages of the fiber distributed data interface |
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Definition
more reliable and secure than coper based wiring and works well with 100base-tx technology - can use same cabling to fast or gigabit Ethernet with few differences (distance)
More expensive (up to 10x) |
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Term
| discuss the advantages of using virtual circuits |
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Definition
| the ability to configure them. they ca be more efficient. more than one can be assigned to to a length of cable or channel.only in use when it needs to transmit - otherwise the channel is open to other virtual circuits. |
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Term
| what is the difference between active and passive scanning |
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Definition
Active scanning - the station transmits a probe frame to all channels in its range. the access point finds the probe and sends a response with a status code and station id number - after a response is received and the station agrees, they can communicate.
Passive - a wireless station listens on all channels foe a beacon frame, issued from an access point. A beacon frame has all the info to from that access point for the wireless node to associate its self. then the wireless node chooses to receive and the two nodes agree to transmit and begin communicating. |
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Term
| discuss the meaning of the following terms: Control frame Management frame data frame |
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Definition
management frames are for association or reassociation (probe and beacon frames).
control frames are for medium access and delivery. -ACK and RTS/CTS frames
Data frames and those that carry frames between nodes |
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Term
| discuss the meaning of the following terms: Control frame Management frame data frame |
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Definition
management frames are for association or reassociation (probe and beacon frames).
control frames are for medium access and delivery. -ACK and RTS/CTS frames
Data frames and those that carry frames between nodes |
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