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CertMaster Learn Tech+ > Tech+ Mod 5 > Flashcards

Tech+ Mod 5 Flashcards

1
Q

What numbering system uses the digits 0-7?

A

Octal

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2
Q

Which numbering system is used to represent file permissions in Linux?

A

Octal

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3
Q

How many sets of two hexadecimal numbers are in a MAC address?

A

6

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4
Q

What is a Type I hypervisor?

A

A hypervisor installed directly on the computer and interacts with its hardware.

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5
Q

Which of the following is a characteristic of a physical address?

A

It is assigned by the device manufacturer

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6
Q

What type of hypervisor is needed to use virtualization on an existing OS?

A

Type II hypervisor

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7
Q

Why do most Wi-Fi routers support multiple standards?

A

To ensure compatibility with both old and new devices

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8
Q

What format uses four sets of numbers with periods between them to represent an IP address?

A

Dotted decimal notation

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9
Q

What wireless technology requires less than 2 inches to connect?

A

Near Field Communication (NFC)

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10
Q

How can virtualization stop viruses?

A

By isolating the malware within a guest operating system, preventing it from infecting the host computer or network.

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11
Q

What is an intranet?

A

A private LAN for a company or organization

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12
Q

What is the maximum number a single byte can hold?

A

225

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13
Q

Which type of cable is most commonly used in wired networks?

A

Ethernet cable

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14
Q

What happens to Wi-Fi signal strength as you move farther from the router?

A

It decreases

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15
Q

What is a benefit of using one large server with multiple virtual servers running on it?

A

It reduces the overall cost of hardware and maintenance.

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16
Q

What happens when you connect your mobile device to Bluetooth earbuds?

A

You create a personal area network (PAN)

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17
Q

In computing, why is the hexadecimal system useful?

A

It uses fewer digits to represent binary numbers.

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18
Q

What are the three types of cables that carry Internet data?

A

Fiber optic cable, coaxial cable, and twisted pair copper wire

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19
Q

What is a virtual machine (VM)?

A

A guest operating system installed on a host computer using virtualization software.

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20
Q

What is the benefit of virtualization if a host machine is damaged?

A

Virtual machines can be easily moved to another physical computer

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21
Q

How many potential values can a single bit store?

A

2

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22
Q

What is a guest operating system (OS)?

A

The OS that runs inside a virtual environment

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23
Q

Why is a firewall important for a network connected to the internet?

A

It filters out bad data and protects the network

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24
Q

How do enterprise APs typically connect to the main network?

A

Using an Ethernet cable

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25
Q

Which type of cable is most commonly found inside houses?

A

Twisted pair copper wire

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26
Q

What device takes the signal from the modem and sends it to the switch?

A

Router

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27
Q

Which of the following best describes a Wide Area Network (WAN)?

A

A network that spans a large geographical area, often connecting multiple smaller networks

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28
Q

What is one of the best parts of small wireless networks?

A

They make it simple to share an internet connection.

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29
Q

What device is usually used to connect a LAN to a WAN?

A

Router

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30
Q

What is the traditional way of setting up and running systems and software called?

A

On-premises management

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31
Q

What is the definition of network media?

A

The pathways that connect computers together to share information

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32
Q

Which cloud service model provides physical equipment such as servers, routers, and storage?

A

Which cloud service model provides physical equipment such as servers, routers, and storage?

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33
Q

How do computers use binary to represent information?

A

By using combinations of only two values: 0 and 1

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34
Q

What is the purpose of a toner probe?

A

To find where a network cable starts or ends

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35
Q

What is the unique code that switches use to send data to the right device?

A

MAC address

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36
Q

Which cloud service model is best for businesses that want to save money and time by not handling physical servers themselves?

A

Infrastructure as a Service (IaaS)

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37
Q

What is latency in the context of internet speed?

A

The delay that occurs when data packets travel over the internet

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38
Q

The Institute of Electrical and Electronics Engineers (IEEE) established what standards for wireless communications?

A

802.11

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39
Q

How many bits does each hexadecimal digit represent in a network address?

A

4

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40
Q

How do virtual servers make the network administrator’s job easier?

A

They consolidate resources, making management simpler.

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41
Q

In a client-server model, what role does the server play?

A

It fulfills client requests

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42
Q

What is the main advantage of a WAN for a company?

A

Seamless communication and sharing of information

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43
Q

Who is responsible for overseeing a LAN?

A

Network Administrators

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44
Q

How is the 2.4 GHz frequency better than the 5 GHz frequency?

A

It can travel longer distances.

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45
Q

What is the primary purpose of the ASCII format?

A

To represent characters such as letters, numbers, and symbols in binary

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46
Q

What is the main limitation of the ASCII format?

A

It only supports 128 characters, primarily based on the English language

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47
Q

Which cloud service model is usually for developers and database administrators?

A

Platform as a Service (PaaS)

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48
Q

What is a peer-to-peer relationship in networking?

A

Both computers can request and provide resources

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49
Q

What is required for a virtual platform?

A

A computer, a hypervisor, and guest operating systems.

50
Q

Which of the following is a characteristic of logical addresses?

A

They can be changed by software

51
Q

What counting system do humans most commonly use?

A

Decimal

52
Q

What unit is used to measure latency?

A

Milliseconds (ms)

53
Q

What is virtualization?

A

A technology that allows multiple operating systems to run on a single computer simultaneously.

54
Q

What do you need to use the latest frequency bands like 6 GHz?

A

A router and devices that support the latest Wi-Fi standards

55
Q

What is cloud virtualization?

A

Making virtual copies of computer resources and putting them on rented server space.

56
Q

What is the term for unique numbers assigned to different types of network traffic?

A

Network Ports

57
Q

What is one advantage of using virtual machines for training?

A

It allows students to practice using a live operating system without impacting the production environment.

58
Q

What is a network interface card (NIC)?

A

A device that connects a computer to a network

59
Q

What is a WLAN?

A

A type of wireless network

60
Q

Which cloud service model allows you to use a program through your web browser over the Internet?

A

Software as a Service (SaaS)

61
Q

What is the effect of interference on a Wi-Fi signal?

A

Decreased signal strength and network speed

62
Q

How does a hypervisor manage the CPU for virtual machines?

A

It divides the real CPU so multiple virtual machines can use it.

63
Q

What is the smallest unit of measure for a computer?

A

Bit

64
Q

What do you call a group of computer systems connected to share information?

A

A network

65
Q

Besides a network administrator, how can IP addresses be assigned?

A

By DHCP (Dynamic Host Configuration Protocol)

66
Q

What is a private cloud?

A

A cloud environment set up just for authorized users within an organization

67
Q

How many bytes are in a kilobyte (KB)?

A

1024

68
Q

What is a “sandbox” in the context of virtual servers?

A

A virtual environment for testing new apps and programs safely.

69
Q

What frequency bands are available if you are using Wi-Fi 6G or 6E?

A

2.4 GHz, 5 GHz, and 6 GHz

70
Q

What does a byte represent in computing?

A

A group of 8 bits

71
Q

What is the risk of having a WiFi network without encryption?

A

Unwanted people can access the network

72
Q

What is a MAN?

A

A network that covers a city

73
Q

What does Unicode provide that ASCII does not?

A

Support for emojis

74
Q

What is a “ping” test used for?

A

Measuring latency

75
Q

What is an example of Software as a Service (SaaS)?

A

Gmail

76
Q

What is the main reason for transitioning from IPv4 to IPv6?

A

IPv4 addresses are running out.

77
Q

What does LAN stand for?

A

Local Area Network

78
Q

What is one advantage of using multiple guest OSs on a single physical computer?

A

They can perform different tasks independently

79
Q

How is the 5 GHz frequency better than the 2.4 GHz frequency?

A

It has less interference from other devices

80
Q

What can the hypervisor do if a virtual machine needs more memory?

A

It can assign more memory from the real computer to the virtual machine.

81
Q

How many wires are inside an Ethernet cable?

A

8

82
Q

What type of router is best suited for small offices or homes?

A

Consumer router

83
Q

What is container virtualization?

A

A lighter way to run many apps without them interfering with each other.

84
Q

What is the role of a firewall in a LAN?

A

To block unauthorized access

85
Q

What does a cable tester do?

A

Checks if a cable is working

86
Q

How many bits are in an IPv6 address?

A

128

87
Q

What is the base of the hexadecimal numbering system?

A

16

88
Q

What is a SOHO network?

A

A network for small offices or home offices

89
Q

What property of radio waves is described as the height of peaks and the depth of troughs?

A

Amplitude

90
Q

What does an RJ-45 plug connect to?

A

A network socket

91
Q

What is the purpose of network protocols?

A

To create a common set of rules for network communication

92
Q

What is a hybrid cloud?

A

A combination of public and private cloud models

93
Q

What is port forwarding?

A

A way to send network traffic to a new address

94
Q

Why is it useful to learn how to make Ethernet cables yourself?

A

You can make cables of specific lengths

95
Q

What should you do to make your router more secure?

A

Change the SSID and password

96
Q

What is the primary purpose of a VPN for remote users?

A

To create a secure connection over the Internet for remote users

97
Q

Which type of hypervisor requires an existing operating system to run?

A

Type 2

98
Q

What is the role of a hypervisor in virtualization?

A

It manages the virtual machine environment and facilitates interaction with the host hardware and network.

99
Q

What is a MAC address?

A

A unique hexadecimal number hardcoded in a device

100
Q

What feature allows switches to send electricity through Ethernet cables?

A

PoE

101
Q

Why is WEP considered insecure today?

A

It is easily hacked

102
Q

Which 802.11 standard was the first to allow more than one frequency band?

A

802.11n

103
Q

Which port number is used for secure web communication?

A

443

104
Q

What is the main function of a modem?

A

To translate signals from the ISP into a form your devices can understand

105
Q

How many bits are in an IPv4 address?

A

32

106
Q

What is attenuation in the context of Wi-Fi signals?

A

The loss of signal strength as you move away from the router

107
Q

What device is commonly used to connect computers in a LAN?

A

Switch

108
Q

Which of the following hexadecimal digits represents the decimal number 15?

A

F

109
Q

Why is a Type 1 hypervisor also known as a bare-metal hypervisor?

A

Because it runs directly on the computer hardware without needing an operating system

110
Q

What is a public cloud deployment?

A

A cloud environment shared among many unrelated organizations

111
Q

Which port number is used for the Hypertext Transfer Protocol (HTTP)?

A

80

112
Q

What tool is used to connect an RJ-45 cable to its clip?

A

Crimper

113
Q

Which computer component is not needed to share information on a network?

A

Network storage

114
Q

What is the main difference between managed and unmanaged switches?

A

Managed switches can be configured, unmanaged switches cannot

115
Q

Which of the following is an example of a network in daily life?

A

Using a debit or credit card at a store

116
Q

What is the primary function of a wireless access point (AP)?

A

To enable wireless devices to connect to the network

117
Q

What is a VLAN?

A

A logical network segment within a larger network

118
Q

What is a pre-shared key?

A

A password used to access a wireless network

119
Q

What is the current standard for WiFi encryption that is considered very secure?

A

WPA3

120
Q

What is the easiest way to add Wi-Fi to a desktop computer that doesn’t have it built-in?

A

Use a USB wireless adapter

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