PRELIMS REVIEWER ( NET-TECH )
問題一覧
1
is the act of transmitting and exchanging information between people, people and objects, and objects and objects through various media and actions.
Communication
2
is the largest computer network in the world. Its predecessor, Advanced Research Projects Agency Network (ARPAnet), was born in 1969.
Internet
3
refers to communication between terminal devices through a computer network.
Network communication
4
This refers to a sign or indication that conveys information about something or that tells someone to do something.
Means of communication
5
This refers to an event or act, which shows that something exists or that gives information about something.
Communicated Information
6
This refers to a detectable physical quantity or impulse (as a voltage, current, or magnetic field strength) by which messages or information can be transmitted via telegraphy, telephony, radio, radar, or television.
Electronics transmitted information:
7
voltages and currents
Electrical Signals
8
audio or speech signals
Acoustic signals
9
intensity variations in an image)
Video Signals
10
sequence of bases in a gene)
Biological Signals
11
interference – undesired form of signal)
Noise
12
refer to disturbances in that energy to travel through a medium from one location to another.
Waves
13
refers to the horizontal distance of a wave from a point to the corresponding point on the next wave. This is measured in meters (m) in SI.
Wavelength
14
refers to a vertical distance from a given point on the wave from the horizontal axis.
Amplitude
15
describes the position of the waveform relative to time zero; it is a measurement of the delay of the wave relative to some fixed reference point or another sine wave.
Phase
16
refers to the number of waves made per second or as cycles per second. It is the reciprocal of the period to complete one (1) wave cycle. The unit for frequency is in Hertz (Hz); 1 Hz means 1 cycle per second (cps).
Frequency
17
refers to the amount of time (expressed in seconds) required to complete one (1) full cycle.
Period
18
is a wave in which both the amplitude and time continuously vary over their respective intervals that results in a wavy characteristic.
Analog (short for “analogous”) wave
19
is a wave with several discrete (jumpy) states, such as high or low, and on or off.
Digital wave
20
Computers facilitate information exchange and resource sharing from one location to another through some sort of wiring/cabling or waves that act as a physical path, which carries electrical or electromagnetic signals between a transmitter and a receiver.
Networking Media
21
These networking media use cables and are limited by physical geography.
Wired or Bounded Media
22
In contrast to wired or bounded media, these networking media do not use any cables in transmitting data and is not bounded by physical geography.
Wireless or Unbounded Media
23
is a connection wherein data flows in one (1) direction only (unidirectional). This type is either transmit-only or receive-only.
Simplex mode
24
is a connection wherein data can flow in both directions, but not simultaneously (both at the same time) over a shared physical medium.
Half-duplex mode
25
is a connection wherein data simultaneously flows in both directions
Full-duplex mode
26
is a transmission in which data with each bit lining up in a series as the bits are sent over a single wire at a time.
Serial Transmission
27
is a transmission wherein a group of bits is sent simultaneously, but each uses a different channel.
Parallel Transmission
28
The most widely used standard for serial data communications is which is intended to operate over distances of up to 50 feet and has a communication speed that is equal to or less than 20Kbps.
Serial Cable
29
refers to two (2) conductors enclosed by an insulating protective coating.
Coaxial Cable
30
is a flexible coaxial cable about 0.25 inches thick. It uses British Naval Connector (BNC)-T cable connector attached to LAN Card (NIC).
Thin (Thinnet) Cable
31
is a relatively rigid coaxial cable about 0.5 inches in diameter. It uses vampire tap or piercing tap as connectors.
Thick (Thicknet) Cable
32
consists of two insulated strands of copper wire that are arranged in a regular spiral pattern.
Twisted Pair Cable
33
As the name implies, a UTP cable refers to a twisted pair cable that contains no shielding
Unshielded Twisted-Pair (UTP) Cable
34
As the name implies, an STP cable refers to a twisted pair cable that combines the techniques of twisting wires, cancellation, and shielding.
Shielded Twisted-Pair (STP) Cable
35
refers to signal loss due to impedance.
Attenuation
36
refers to the twisted-wire pairs producing a magnetic field cancellation effect, which limits signal degradation caused by interference from nearby twisted pairs.
Crosstalk
37
refers to a bundle of extremely thin and cylindrically shaped glass fibers surrounded by a concentric layer of glass coating that can conduct modulated light transmissions.
Fiber optic cable
38
refers to the innermost section that consists of one (1) or more very thin strands or fibers made of glass or plastic.
Core
39
refers to an outer optical glass or plastic coating that surrounds and traps the light in the core by the principle of total internal reflection.
Cladding
40
is made from plastic that helps to shield the core and cladding from damage.
Coating
41
stand as protection for the core against compressive forces or crushing and tension or excessive pulling.
Strengthening Fibers
42
refers to an outermost layer that protects a buffer or a bundle of buffer-coated fibers against moisture, abrasion, crushing, and other environmental dangers.
Cable Jacket (Sheath)
43
This fiber optic cable type allows light waves to travel along a single path or in only one mode. It is used for high-speed transmission over long distances.
Single-mode fiber optic cable
44
This fiber optic cable type allows light waves to travel into numerous paths through the core of the fiber at various angles. It is often applied to local area networks which encompass a much smaller transmission range.
Multimode fiber optic cable
45
Computers also facilitate information exchange and resource sharing from one location to another through waves which act as physical paths that carry current or series of electromagnetic energy pulses at various frequencies.
Wireless or Unbounded media
46
refers to a wireless medium that is used for multicast communications (e. g. radio and TV broadcasting, wireless local loop, mobile communications, and amateur radio) and paging systems over long distances.
Radio Wave
47
which is also known as aerial, refers to a metallic structure that acts as a transducer that converts electrical energy to electromagnetic energy (upon transmission of signal) and vice-versa.
antenna
48
It is a method by which radio waves travel from the transmitting antenna to the receiving antenna.
Line of Sight Propagation Method
49
It is a method by which radio waves are radiated directly towards the earth’s surface. It is used for:
Ground Wave (Surface) Propagation Method
50
It is a method by which radio waves radiate upwards from the transmitting antenna of the earth into a direction towards the ionosphere.
SkyWave (Ionospheric) Propagation Method
51
It is a method by which radio waves radiation exceeds 30 MHz up to 300 GHz.
Space Wave (Tropospheric) Propagation Method
52
refers to a wireless medium that is used for short-range communication in a closed area using LOS propagation.
Infrared
53
refers to a wireless medium that is used for unicast communication such as wPAN, WiMAX, wireless WAN (2G/3G), satellite networks, and Wi-Fi.
Microwave
54
allows devices to transmit data or voice wirelessly over a short distance. It uses the same 2.4GHz frequency.
Bluetooth
55
It is a schematic description of a network arrangement, connecting various nodes (sender and receiver) through lines of connection.
Network Topologies
56
in this type of topology, the computers are connected to a single hub through a cable.
Star Topology
57
a network type in which every computer and network device is connected to a single cable.
Bus topology
58
All nodes are connected through a bus (ex. coaxial cable).
Linear Bus Topology
59
forms a ring as each computer is connected to another computer, with the last one (1) connected to the first —exactly two (2) neighbors for each device.
Ring Topology
60
has a root node and all other nodes are connected to it forming a hierarchy.
Tree Topology
61
a point-to-point connection to other nodes or devices.
Mesh Topology
62
in this topology, some systems are connected in the same fashion as mesh topology, but some devices are only connected to two (2) or three (3) devices.
Partial Mesh Topology
63
each node or device is connected.
Full Mesh Topology
64
it consists of a mix of two (2) different types of topologies merging as one network.
Hybrid Topology
65
It is the end-device of the data communication system.
Terminal Devices
66
This includes___ Such as a pc, phone, handsets, printers, and servers
Data Terminal Equipment or DTE
67
is a key component that connects directly to a device that allows access to a network such as an internet or a local network.
Network Interface Card
68
It is the device closest to end-users, used to access the network and switch data frames.
Switch
69
Switches belonging at the access layer are usually Layer 2
switches, also known as
Ethernet Switches
70
is a set of nodes that can receive broadcast packets from a node.
Broadcast Domain
71
It is a network-layer device that forwards data packets on the Internet.
Router
72
is a device that connects a network to the Internet.
Modem
73
takes signals from your___ and translates them into signals connected to the local devices.
Internet Service Provider (ISP)
74
is a term for a router that provides functions such as protocol conversion, route selection, and data exchange when networks using different architectures or protocols communicate with each other.
Gateway
75
It is a network security device used to ensure secure communication between two networks.
Firewall
76
It is a network that uses radio waves, laser, and infrared signals to replace some or all transmission media in a wired LAN.
Wireless Devices
77
applies to homes. It works independently and needs to be configured separately. It has simple functions and low costs.
Fat Access Point
78
applies to medium- and large-sized enterprises. It needs to work with the AC and is managed and configured by the AC.
Fit Access Point
79
is generally deployed at the aggregation layer of the entire network.
Access Controller
80
* generally covers an area of a few square kilometers.
* The main function is to connect several terminals that are close to each other (within a family, within one or more buildings, within a campus, for example).
Local Area Network ( LAN )
81
is a large-sized LAN, requiring high costs but can provide a higher transmission rate.
Metropolitan Area Network ( MAN )
82
generally covers an area of several kilometers or larger (thousands of kilometers for example).
Wide Area Network ( WAN )
83
is a descriptive network scheme. Describes how information or data makes its way from application programs through a network medium to another application program located on another network.
Open Systems Interconnection ( OSI )
84
OSI layer that is closest to the user.
Application Layer
85
ensures that the information that the application layer of one (1) system sends out is readable by the application layer of another system.
Presentation Layer
86
defines how to start, control and end conversations (called sessions) between applications.
Session Layer
87
regulates information flow to ensure end-to-end connectivity between host applications reliably and accurately.
Transport Layer
88
defines end-to-end delivery of packets. It defines how routing works (identifying
endpoints) and how routes are learned so that the packets can be delivered.
Network Layer
89
provides access to the networking media and physical transmission across the media and this enables the data to locate its intended destination on a network.
Data Link Layer
90
The data link layer provides reliable transit of data across a physical link by using the
Media Access Controller ( MAC ) Addresses
91
deals with the physical characteristics of the transmission medium.
Physical Layer
92
It is a networking model with a set of communication protocols for the Internet and similar networks.
TCP/IP MODEL
93
provides basic communication.
Internet Protocol (IP)
94
provides key functions that applications need.
Transmission Control Protocol ( TCP )
95
represents an interface through a variety of protocols that enable services to be applied to end-user application processes.
Application Layer
96
is responsible for reliable end-to-end data delivery from the source host to the destination host.
Transport Layer
97
is responsible for the delivery of service requests that respond from the transport layer and have them arrive at their destination through the "virtual network" image of the Internet.
Internet Layer
98
is also called the host-to-network layer, which is concerned with all of the issues that an IP packet requires to make a physical link to the network media.
Network Access Layer
REVIEWER FOR INFORMATION MANAGEMENT
REVIEWER FOR INFORMATION MANAGEMENT
Dominic Alix · 73問 · 1年前REVIEWER FOR INFORMATION MANAGEMENT
REVIEWER FOR INFORMATION MANAGEMENT
73問 • 1年前SIA REVIEWER
SIA REVIEWER
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SIA REVIEWER
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TECHNOPRENEURSHIP ( PRELIMS )
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TECHNOPRENEURSHIP ( PRELIMS )
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PPC ( PRELIMS REVIEWER )
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PPC ( PRELIMS REVIEWER )
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PRELIMS ( INTEGRATIVE PROGRAMMING )
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PRELIMS ( INTEGRATIVE PROGRAMMING )
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QM ( MIDTERM )
Dominic Alix · 5問 · 1年前QM ( MIDTERM )
QM ( MIDTERM )
5問 • 1年前問題一覧
1
is the act of transmitting and exchanging information between people, people and objects, and objects and objects through various media and actions.
Communication
2
is the largest computer network in the world. Its predecessor, Advanced Research Projects Agency Network (ARPAnet), was born in 1969.
Internet
3
refers to communication between terminal devices through a computer network.
Network communication
4
This refers to a sign or indication that conveys information about something or that tells someone to do something.
Means of communication
5
This refers to an event or act, which shows that something exists or that gives information about something.
Communicated Information
6
This refers to a detectable physical quantity or impulse (as a voltage, current, or magnetic field strength) by which messages or information can be transmitted via telegraphy, telephony, radio, radar, or television.
Electronics transmitted information:
7
voltages and currents
Electrical Signals
8
audio or speech signals
Acoustic signals
9
intensity variations in an image)
Video Signals
10
sequence of bases in a gene)
Biological Signals
11
interference – undesired form of signal)
Noise
12
refer to disturbances in that energy to travel through a medium from one location to another.
Waves
13
refers to the horizontal distance of a wave from a point to the corresponding point on the next wave. This is measured in meters (m) in SI.
Wavelength
14
refers to a vertical distance from a given point on the wave from the horizontal axis.
Amplitude
15
describes the position of the waveform relative to time zero; it is a measurement of the delay of the wave relative to some fixed reference point or another sine wave.
Phase
16
refers to the number of waves made per second or as cycles per second. It is the reciprocal of the period to complete one (1) wave cycle. The unit for frequency is in Hertz (Hz); 1 Hz means 1 cycle per second (cps).
Frequency
17
refers to the amount of time (expressed in seconds) required to complete one (1) full cycle.
Period
18
is a wave in which both the amplitude and time continuously vary over their respective intervals that results in a wavy characteristic.
Analog (short for “analogous”) wave
19
is a wave with several discrete (jumpy) states, such as high or low, and on or off.
Digital wave
20
Computers facilitate information exchange and resource sharing from one location to another through some sort of wiring/cabling or waves that act as a physical path, which carries electrical or electromagnetic signals between a transmitter and a receiver.
Networking Media
21
These networking media use cables and are limited by physical geography.
Wired or Bounded Media
22
In contrast to wired or bounded media, these networking media do not use any cables in transmitting data and is not bounded by physical geography.
Wireless or Unbounded Media
23
is a connection wherein data flows in one (1) direction only (unidirectional). This type is either transmit-only or receive-only.
Simplex mode
24
is a connection wherein data can flow in both directions, but not simultaneously (both at the same time) over a shared physical medium.
Half-duplex mode
25
is a connection wherein data simultaneously flows in both directions
Full-duplex mode
26
is a transmission in which data with each bit lining up in a series as the bits are sent over a single wire at a time.
Serial Transmission
27
is a transmission wherein a group of bits is sent simultaneously, but each uses a different channel.
Parallel Transmission
28
The most widely used standard for serial data communications is which is intended to operate over distances of up to 50 feet and has a communication speed that is equal to or less than 20Kbps.
Serial Cable
29
refers to two (2) conductors enclosed by an insulating protective coating.
Coaxial Cable
30
is a flexible coaxial cable about 0.25 inches thick. It uses British Naval Connector (BNC)-T cable connector attached to LAN Card (NIC).
Thin (Thinnet) Cable
31
is a relatively rigid coaxial cable about 0.5 inches in diameter. It uses vampire tap or piercing tap as connectors.
Thick (Thicknet) Cable
32
consists of two insulated strands of copper wire that are arranged in a regular spiral pattern.
Twisted Pair Cable
33
As the name implies, a UTP cable refers to a twisted pair cable that contains no shielding
Unshielded Twisted-Pair (UTP) Cable
34
As the name implies, an STP cable refers to a twisted pair cable that combines the techniques of twisting wires, cancellation, and shielding.
Shielded Twisted-Pair (STP) Cable
35
refers to signal loss due to impedance.
Attenuation
36
refers to the twisted-wire pairs producing a magnetic field cancellation effect, which limits signal degradation caused by interference from nearby twisted pairs.
Crosstalk
37
refers to a bundle of extremely thin and cylindrically shaped glass fibers surrounded by a concentric layer of glass coating that can conduct modulated light transmissions.
Fiber optic cable
38
refers to the innermost section that consists of one (1) or more very thin strands or fibers made of glass or plastic.
Core
39
refers to an outer optical glass or plastic coating that surrounds and traps the light in the core by the principle of total internal reflection.
Cladding
40
is made from plastic that helps to shield the core and cladding from damage.
Coating
41
stand as protection for the core against compressive forces or crushing and tension or excessive pulling.
Strengthening Fibers
42
refers to an outermost layer that protects a buffer or a bundle of buffer-coated fibers against moisture, abrasion, crushing, and other environmental dangers.
Cable Jacket (Sheath)
43
This fiber optic cable type allows light waves to travel along a single path or in only one mode. It is used for high-speed transmission over long distances.
Single-mode fiber optic cable
44
This fiber optic cable type allows light waves to travel into numerous paths through the core of the fiber at various angles. It is often applied to local area networks which encompass a much smaller transmission range.
Multimode fiber optic cable
45
Computers also facilitate information exchange and resource sharing from one location to another through waves which act as physical paths that carry current or series of electromagnetic energy pulses at various frequencies.
Wireless or Unbounded media
46
refers to a wireless medium that is used for multicast communications (e. g. radio and TV broadcasting, wireless local loop, mobile communications, and amateur radio) and paging systems over long distances.
Radio Wave
47
which is also known as aerial, refers to a metallic structure that acts as a transducer that converts electrical energy to electromagnetic energy (upon transmission of signal) and vice-versa.
antenna
48
It is a method by which radio waves travel from the transmitting antenna to the receiving antenna.
Line of Sight Propagation Method
49
It is a method by which radio waves are radiated directly towards the earth’s surface. It is used for:
Ground Wave (Surface) Propagation Method
50
It is a method by which radio waves radiate upwards from the transmitting antenna of the earth into a direction towards the ionosphere.
SkyWave (Ionospheric) Propagation Method
51
It is a method by which radio waves radiation exceeds 30 MHz up to 300 GHz.
Space Wave (Tropospheric) Propagation Method
52
refers to a wireless medium that is used for short-range communication in a closed area using LOS propagation.
Infrared
53
refers to a wireless medium that is used for unicast communication such as wPAN, WiMAX, wireless WAN (2G/3G), satellite networks, and Wi-Fi.
Microwave
54
allows devices to transmit data or voice wirelessly over a short distance. It uses the same 2.4GHz frequency.
Bluetooth
55
It is a schematic description of a network arrangement, connecting various nodes (sender and receiver) through lines of connection.
Network Topologies
56
in this type of topology, the computers are connected to a single hub through a cable.
Star Topology
57
a network type in which every computer and network device is connected to a single cable.
Bus topology
58
All nodes are connected through a bus (ex. coaxial cable).
Linear Bus Topology
59
forms a ring as each computer is connected to another computer, with the last one (1) connected to the first —exactly two (2) neighbors for each device.
Ring Topology
60
has a root node and all other nodes are connected to it forming a hierarchy.
Tree Topology
61
a point-to-point connection to other nodes or devices.
Mesh Topology
62
in this topology, some systems are connected in the same fashion as mesh topology, but some devices are only connected to two (2) or three (3) devices.
Partial Mesh Topology
63
each node or device is connected.
Full Mesh Topology
64
it consists of a mix of two (2) different types of topologies merging as one network.
Hybrid Topology
65
It is the end-device of the data communication system.
Terminal Devices
66
This includes___ Such as a pc, phone, handsets, printers, and servers
Data Terminal Equipment or DTE
67
is a key component that connects directly to a device that allows access to a network such as an internet or a local network.
Network Interface Card
68
It is the device closest to end-users, used to access the network and switch data frames.
Switch
69
Switches belonging at the access layer are usually Layer 2
switches, also known as
Ethernet Switches
70
is a set of nodes that can receive broadcast packets from a node.
Broadcast Domain
71
It is a network-layer device that forwards data packets on the Internet.
Router
72
is a device that connects a network to the Internet.
Modem
73
takes signals from your___ and translates them into signals connected to the local devices.
Internet Service Provider (ISP)
74
is a term for a router that provides functions such as protocol conversion, route selection, and data exchange when networks using different architectures or protocols communicate with each other.
Gateway
75
It is a network security device used to ensure secure communication between two networks.
Firewall
76
It is a network that uses radio waves, laser, and infrared signals to replace some or all transmission media in a wired LAN.
Wireless Devices
77
applies to homes. It works independently and needs to be configured separately. It has simple functions and low costs.
Fat Access Point
78
applies to medium- and large-sized enterprises. It needs to work with the AC and is managed and configured by the AC.
Fit Access Point
79
is generally deployed at the aggregation layer of the entire network.
Access Controller
80
* generally covers an area of a few square kilometers.
* The main function is to connect several terminals that are close to each other (within a family, within one or more buildings, within a campus, for example).
Local Area Network ( LAN )
81
is a large-sized LAN, requiring high costs but can provide a higher transmission rate.
Metropolitan Area Network ( MAN )
82
generally covers an area of several kilometers or larger (thousands of kilometers for example).
Wide Area Network ( WAN )
83
is a descriptive network scheme. Describes how information or data makes its way from application programs through a network medium to another application program located on another network.
Open Systems Interconnection ( OSI )
84
OSI layer that is closest to the user.
Application Layer
85
ensures that the information that the application layer of one (1) system sends out is readable by the application layer of another system.
Presentation Layer
86
defines how to start, control and end conversations (called sessions) between applications.
Session Layer
87
regulates information flow to ensure end-to-end connectivity between host applications reliably and accurately.
Transport Layer
88
defines end-to-end delivery of packets. It defines how routing works (identifying
endpoints) and how routes are learned so that the packets can be delivered.
Network Layer
89
provides access to the networking media and physical transmission across the media and this enables the data to locate its intended destination on a network.
Data Link Layer
90
The data link layer provides reliable transit of data across a physical link by using the
Media Access Controller ( MAC ) Addresses
91
deals with the physical characteristics of the transmission medium.
Physical Layer
92
It is a networking model with a set of communication protocols for the Internet and similar networks.
TCP/IP MODEL
93
provides basic communication.
Internet Protocol (IP)
94
provides key functions that applications need.
Transmission Control Protocol ( TCP )
95
represents an interface through a variety of protocols that enable services to be applied to end-user application processes.
Application Layer
96
is responsible for reliable end-to-end data delivery from the source host to the destination host.
Transport Layer
97
is responsible for the delivery of service requests that respond from the transport layer and have them arrive at their destination through the "virtual network" image of the Internet.
Internet Layer
98
is also called the host-to-network layer, which is concerned with all of the issues that an IP packet requires to make a physical link to the network media.
Network Access Layer