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Net > 02 > Flashcards

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

A

802.5

24
Q

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

A

802.3

25
Q

What 802 project is responsible for wireless lan (wlan) and mesh certification (wi-fi certfication)

A

802,11

26
Q

_______ are rules that govern a convention or standard that enables data transfer between two computing endpoints

A

protocol

27
Q

When a set of protocols work cooperatively, they are called a _________ or _________

A

protocol stack, protocol suite

28
Q

What are the layers of the TCP/IP Model?

A

Application
Transport
Internet
Network Interface

29
Q

What is the TCP/IP model?

A

puts into perspective what protocols are used by each layer of the OSI suite

30
Q

On a TCP/Ip network, each device with a connection to the network is referred to as a ______

A

host

31
Q

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

A

network adapter, NIC, MAC, 2

32
Q

The loss of signal intensity over distance is _________

A

attenuation

33
Q

A device known as an _______ was originally made to solve attenuation however it also strengthened any noise along with the transmission

A

Amplifier

34
Q

______ 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

A

repeaters

Layer 1, Network interface

35
Q

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?

A

hub

Layer 1

36
Q

______ 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?

A

switches

bridging

Layer 2, Network interface

T

37
Q

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?

A

Router

Router, traffic control, filtering functions

Layer 3, Internet layer

38
Q

The method of electronically/logically switching the transmit and receive wires inside equipment

A

Uplink Port

39
Q

What is Unicast addressing?

A

sending traffic to a single destination/host

40
Q

What is multi-cast addressing?

A

sends traffic to a group of hosts or recipients

41
Q

What is Broadcast addressing?

A

sending traffic to all hosts on a network

42
Q

What is Anycast addressing?

A

maps traffic to the nearest host providing a specific service

43
Q

A Layer 2 broadcast Usses the destination Ethernet address value of ___________________

A

F bomb, FF:FF:FF:FF:FF:FF

44
Q

An address with a value of 1 in the least significant bit of the first block (01, 03, AB) signifies _________

A

Layer 2 multicast address

45
Q

The ________ mac address is used to reference the MAC address table and send frames to the destination as quickly as possible

A

Destination

46
Q

interconnecting multiple switches on a LAN sometimes creates what is called a __________

What was created to solve this problem and how does it work?

A

bridge Loop

Spanning Tree protocol (STP) it blocks redundant ports

47
Q

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?

A

802.3, half/full, Bus and Star topologies, Layer 2

48
Q

What duplex mode risks collisions because the frames they send is on a shared ethernet channel

A

Half-duplex

49
Q

_________ limits transmission to one station at a time, providing the ability for devices to listen to the network prior to transmitting

A

CSMA/CD

50
Q

What ethernet duplex mode is a mode of operation allowing simultaneous communication between a pair of stations?

A

Full-Duplex

Net (6 decks)

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