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02 Flashcards

1
Q

Modbus can only be used with serial communications T/F?

A

F

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2
Q

_________ is a high-speed network technology designed for both LANS and WANS. It is connection oriented and uses a dedicated ciruit between switches

A

ATM

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3
Q

_________ is a high-speed digital networking standard that specifies data rates over fiber-optic connections

A

SONET

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4
Q

_______ ________ faster downstream data rates then upstream data rates

A

Asymmetric ADSL

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5
Q

________ ________ equal data rates for upstream and downstream transfers

________ ________ Up to 100mbs upstream and downstream speeds

A

Symmetric SDSL

Very High Bitrate VDSL

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6
Q

What are the seven layers of OSI model?
Please Do Not Throw Sausage Pizza Away

A

Application
Presentation
Session
Transport
Network
Data Link
Physical

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7
Q

What are the devices associated with the physical layer of the OSI model?

A

Hubs, Repeaters, cables

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8
Q

What are the devices associated with the Data Link layer of the OSI model?

A

Switch

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9
Q

What are the devices associated with the Network layer of the OSI model?

A

router

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10
Q

What are the devices associated with the transport layer of the OSI model?

A

none

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11
Q

What are the devices associated with the session layer of the OSI model?

A

none

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12
Q

What are the devices associated with the presentation layer of the OSI model?

A

none

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13
Q

What are the devices associated with the application layer of the OSI model?

A

none

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14
Q

What is the PDU for every layer of the OSI model?
Application
Presentation
Session
Transport
Network
Data Link
Physical
Because fresh pizza smells delicious delicious delicious

A

Data, Data, Data, segments, packets, frames, bits

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15
Q

The _______ is the interface between the user’s application and the network when the user network-aware application requires network resources to accomplish a task. Applications are made to be network-aware through __________

What is its PDU?

A

Application Layer
API

Data

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16
Q

The ______ is responsible for presenting the data at the destination with the same meaning and appearance as it had at the source.

What is its PDU?

A

presentation Layer

Data

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17
Q

The ________ sets up, coordinates, and terminates conversations, exchanges and dialogues between devices across a network

What is it’s PDU?

A

Session Layer

Data

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18
Q

What are the session types in the session layer and what are they defined as?

A

Simplex : communications occur one way (radio)

Half-duplex: communications occur intwo directions but not at the same time (Walkey talkie)

full-duplex: communication occurs in two directions simultaneously

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19
Q

The ____________ manages data delivery between systems or hosts. __________ layer protocols are Ethier connectionless (UDP) or connection oriented (TCP)

What is the PDU for this layer?

A

Transport Layer

segment

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20
Q

The ___________ is responsible for the logical addressing and routing of messages to their final destination

What is the PDU for this layer?

A

Network

Packet

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21
Q

The ________ provides a reliable method of transmitting data across the communication link

______ Upper sub layer and handles error checking and flow control between the sender and receiver across a network

_________ and is responsible for mapping logical and physical addressing and across the network media

What is the PDU for this layer?

A

Data Link Layer

LLC

MAC

Frame

22
Q

The _______ is where communications between devices takes place

What is the PDU for this layer?

A

Physical Layer

Bit

23
Q

What 802 project is responsible for Token ring LAN

24
Q

What 802 project is responsible for ethernet lan-csma/cd?

25
What 802 project is responsible for wireless lan (wlan) and mesh certification (wi-fi certfication)
802,11
26
_______ are rules that govern a convention or standard that enables data transfer between two computing endpoints
protocol
27
When a set of protocols work cooperatively, they are called a _________ or _________
protocol stack, protocol suite
28
What are the layers of the TCP/IP Model?
Application Transport Internet Network Interface
29
What is the TCP/IP model?
puts into perspective what protocols are used by each layer of the OSI suite
30
On a TCP/Ip network, each device with a connection to the network is referred to as a ______
host
31
The _____ also known as a ______ provides the interface between a computer and the network medium, it has a burned in-address reffered too as the ____________ and works on layer ____of the OSI model/TCP/IP suite
network adapter, NIC, MAC, 2
32
The loss of signal intensity over distance is _________
attenuation
33
A device known as an _______ was originally made to solve attenuation however it also strengthened any noise along with the transmission
Amplifier
34
______ are now used to solve attenuation problems, recieving and regenerating the signal. These devices work at the _______ of the OSI Model and ______ layer of the TCP/IP suite
repeaters Layer 1, Network interface
35
What is a dumb switch that sends a signal to all ports regardless if its only meant for one? What layer of the OSI model do they work at?
hub Layer 1
36
______ are devices designed to increase the performance of a network. The goal being to to move frames as quickly as possible within their own network. _____ also provide the ability to connect networks with different media types, which is called ________ What layer of the OSI model/TCP IP suite does this device work at? Switches segment networks into collision domains but not broadcast domains T/F?
switches bridging Layer 2, Network interface T
37
A ______ interconnects LANS or WANS and is loacted at the gateway where one network meets another network A ______ also provides ___________ and _______ whe multiple paths are avaliable between two endpoints What layer of the OSI model/TCP IP suite does this device work at?
Router Router, traffic control, filtering functions Layer 3, Internet layer
38
The method of electronically/logically switching the transmit and receive wires inside equipment
Uplink Port
39
What is Unicast addressing?
sending traffic to a single destination/host
40
What is multi-cast addressing?
sends traffic to a group of hosts or recipients
41
What is Broadcast addressing?
sending traffic to all hosts on a network
42
What is Anycast addressing?
maps traffic to the nearest host providing a specific service
43
A Layer 2 broadcast Usses the destination Ethernet address value of ___________________
F bomb, FF:FF:FF:FF:FF:FF
44
An address with a value of 1 in the least significant bit of the first block (01, 03, AB) signifies _________
Layer 2 multicast address
45
The ________ mac address is used to reference the MAC address table and send frames to the destination as quickly as possible
Destination
46
interconnecting multiple switches on a LAN sometimes creates what is called a __________ What was created to solve this problem and how does it work?
bridge Loop Spanning Tree protocol (STP) it blocks redundant ports
47
What 802 project is Ethernet? What duplex modes is it able to operate in? And what topologies is it used on? What OSI layer does it operate at?
802.3, half/full, Bus and Star topologies, Layer 2
48
What duplex mode risks collisions because the frames they send is on a shared ethernet channel
Half-duplex
49
_________ limits transmission to one station at a time, providing the ability for devices to listen to the network prior to transmitting
CSMA/CD
50
What ethernet duplex mode is a mode of operation allowing simultaneous communication between a pair of stations?
Full-Duplex

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