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CompTIA A+ AANGEPAST > Networking > Flashcards

Networking Flashcards

1
Q

What is a group of one or more LANs over a large geographic area?

A

WAN (Wide Area Network)

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2
Q

What is a smaller version of a WAN known as:

A

MAN (Metropolitan Area Network)

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3
Q

What is a smaller computer network used for communication by smartphones, PDAs and other small computing devices?

A

PAN (Personal Area Network)

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4
Q

What is the original connecting device for computers on the LAN that creates a simple shared physical plant that all computers use to send data?

A

Hub

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5
Q

What is a central connecting device that all computers connect to but takes the signal and sends it to the correct computers by identifying their MAC addresses instead of broadcasting it out to every port?

A

Switch

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6
Q

What enables data communications over the air if your computer is equipped with a wireless networking adapter?

A

Wireless access point (WAP)

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7
Q

What is a device that can either connect two LANs together or separate them into two sections?

A

Bridge

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8
Q

What is a device that contains multiple hard drives that connects directly to the network?

A

Network Attached Storage (NAS)

They offer high speed and have no operating system.

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9
Q

What is a device that allows a computer access to the Internet by changing the digital signals of the computer to analog signals used by a typical land-based phone line?

A

Modem

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10
Q

What is any device that enables easy connectivity to the Internet called?

A

Internet Appliance

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11
Q

What is used to connect two or more networks together to form an inter-network?

A

Router

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12
Q

What is any hardware appliance or software application that protects a computer from unwanted intrusion?

A

Firewall

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13
Q

What is a collection of technologies, devices, and protocols that allow voice communication over IP based networks?

A

Voice over Internet Protocol (VoIP)

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14
Q

What is a group of computers and other devices that are usually located in a small area?

A

LAN (Local Area Network)

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15
Q

What is the most common computer topology?

A

Star topology

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16
Q

What type of topology uses a central connecting device (such as a switch) to unite all of the computers on the LAN?

A

Star

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17
Q

What type of topology uses a backbone cable that all computers are connected to?

A

Bus

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18
Q

What type of topology has no central connecting device and is essentially a ring of computers formed together?

A

Ring

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19
Q

What type of topology has every device connected to every other device?

A

Mesh

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20
Q

What type of topology connects two different topologies together?

A

Hybrid

Example: A Star-Bus topology

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21
Q

Which of the following is a group of computers located in a small area?

A. LAN
B. WAN
C. PAN
D. MAN

A

A. LAN

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22
Q

Which of the following are most often used to connect a group of computers in a LAN? (Select the two best answers.)

A. Hub
B. Switch
C. Bridge
D. WAP

A

B and D.

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23
Q

What device contains multiple hard drives and is connected directly to the network?

A. Internet Appliance
B. Router
C. NAS
D. Firewall

A

C. NAS

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24
Q

Which of the following allows voice communication over IP-based networks?

A. Firewall
B. Modem
C. NAS
D. VoIP

A

D. VoIP

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25
Q

What network topology is the most common?

A. Ring
B. Star
C. Bus
D. Mesh

A

B. Star

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26
Q

What network topology combines the characteristics of two other topologies?

A. Hybrid
B. Star
C. Bus
D. Mesh

A

A. Hybrid

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27
Q

Which of the following network devices moves frames of data between a source and destination based on their MAC addresses?

A. Hub
B. Switch
C. Router
D. Modem

A

B. Switch

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28
Q

What type of cable has a single conductor surrounded by insulating material which is then surrounded by a copper screen and finally an outer plastic sheath that is used to transfer data over a network?

A

Coaxial cable

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29
Q

How do you configure IPv4 in Windows 7/Vista and XP?

A

Windows 7/Vista: Start > Control Panel > Network and Internet > Network and Sharing Center. Select Change Adapter Settings. (In Vista, Manage My Network Connections). Right click the Local Area Connection and select Properties. Highlight Internet Protocol Version 4 and click Properties.

XP: Start > Control Panel > Network and Internet Connections. Select Network Connections. Right click the Local Area Connection and select Properties. Highlight Internet Protocol and click Properties.

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30
Q

What is the unique assigned number of your computer on the network?

A

IP address

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31
Q

IP addresses consist of four octets.

A

Each octet’s value can be between 0 and 255. Each number is separated by a dot.
Example: 192.168.0.100

Each octet contains 8 bits, so an IP address is a 32 bit number.

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32
Q

What is the difference between dynamic and static addressees?

A

Dynamic assigned addresses are more common for a client computer. The computer seats out a DHCP server so that it can get its IP info automatically.

Static addresses are when we configure the IP info manually.

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33
Q

What is a computer self assigned IP address?

A

APIPA (automatic private IP addressing)

If APIPA self assigns an address, it will be on the 169.254.0.0 network.

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34
Q

IP addresses are divided into two sections:

A

Network portion: the number of the network the computer is on.

Host portion: The individual number of the computer.

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35
Q

What defines which portion of the IP address is the network number and which portion is the individual host number?

A

Subnet mask

Example:
255.255.255.0

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36
Q

What is the IP address of the host that enables access to the Internet or to other networks called?

A

Gateway address

To use the gate gateway, computers must be on the same network number as the gateway device.

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37
Q

What is the IP address of the host that takes care of domain name translation to IP?

A

DNS server address

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38
Q

What are the different IP classes?

A

Class A: 1 - 126 Range, 126 networks, 16,777,214 hosts per network, used by Large Corps and ISPs

Class B: 128-191 Range, 16,384 networks, 65,534 hosts per network, used by Corps and Universities

Class C: 192-223 Range, 2,097,152 networks, 254 hosts per network, used by small offices/home offices (SOHO)

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39
Q

What is the IP address of the host that takes care of domain name translation to IP?

A

DNS server address

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40
Q

What are the different IP classes?

A

Class A: 1 - 126 Range, 126 networks, 16,777,214 hosts per network, used by Large Corps and ISPs

Class B: 128-191 Range, 16,384 networks, 65,534 hosts per network, used by Corps and Universities

Class C: 192-223 Range, 2,097,152 networks, 254 hosts per network, used by small offices/home offices (SOHO)

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41
Q

What are the default subnet masks for class A B and C?

A

A: 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0

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42
Q

What is the difference between a private address and a public address?

A

A private address is one that is not display directly to the Internet and is normally behind a firewall.

Public addresses are displayed directly to the Internet, they are addresses that anyone could possibly connect to around the world.

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43
Q

What are the default subnet masks for class A B and C?

A

A: 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0

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44
Q

What is the difference between a private address and a public address?

A

A private address is one that is not display directly to the Internet and is normally behind a firewall.

Public addresses are displayed directly to the Internet, they are addresses that anyone could possibly connect to around the world.

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45
Q

What are the private IP ranges for class A, B, and C?

A

A: 10.0.0.0 - 10.255.255.255
B: 172.16.0.0 - 172.31.255.255
C. 192.168.0.0 - 192.168.255.255

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46
Q

IPv6 addresses are more secure than IPv4.

A

IPv6 addresses are 128 but hexadecimal numbers.

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47
Q

What are the loopback addresses for IPv6 an IPv4?

A

IPv6 - ::1

IPv4 - 127.0.0.1

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48
Q

There are three types of IPv6 addresses:

A

Unicast, Anycast, and Multicast

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49
Q

How can an IPv6 address be truncated?

A

Any group of 4 zeroes can be truncated down to a single zero. One consecutive group of zeroes can be truncated as a double colon ::

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50
Q

What sessions are known as connection oriented sessions?

A

Transmission Control Protocol (TCP)

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51
Q

What sessions are known as connectionless sessions, used in streaming media sessions?

A

User Datagram Protocol (UDP)

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52
Q

What is the protocol that makes the connection to the web server?

A

Hypertext Transfer Protocol (HTTP)

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53
Q

What is the port number for FTP?

A

21

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54
Q

What is the port number for SSH?

A

22

55
Q

What is the port number for TELNET?

A

23

56
Q

What is the port number for SMTP?

A

25

57
Q

What is the port number for DNS?

A

53

58
Q

What is the port number for HTTP?

A

80

59
Q

What is the port number for HTTPS?

A

443

60
Q

What is the port number for RDP?

A

3389

61
Q

What allows computers to transfer files back-and-forth?

A

File Transfer Protocol (FTP)

62
Q

What enables data to be exchanged between computers on a secure channel?

A

Secure Shell (SSH)

63
Q

What provides remote access to other hosts within the CLI?

A

Telnet

64
Q

What protocol sends email?

A

Simple Mail Transfer Protocol (SMTP)

65
Q

What is the group of servers on the Internet that translate domain names to IP addresses?

A

Domain Name System (DNS)

66
Q

What transfers web pages and other web-based material web server to your web browser?

A

Hypertext Transfer Protocol (HTTP)

67
Q

What is used by email clients to retrieve incoming email from a mail server?

A

Post Office Protocol Version 3 (POP3)

68
Q

What is an email protocol that enables messages to remain on the email server, so they can be retrieved from any location?

A

Internet Message Access Protocol (IMAP)

69
Q

What sends and receives information like HTTP but includes transport layer security protocol to encrypt the info, most commonly when making purchases/payments online or when logging into a confidential website?

A

Hypertext Transfer Protocol Secure (HTTPS)

70
Q

What is used to facilitate connections to remote computers and allowing for remote control?

A

Remote Desktop Protocol (RDP)

71
Q

What is used to automatically assign IP addresses to hosts?

A

Dynamic Host Configuration Protocol (DHCP)

72
Q

What is used as the standard for managing and monitoring devices on your network?

A

Simple Network Management Protocol (SNMP)

73
Q

What provides access to shared items such as files and printers?

A

Server Message Blocks (SMB)

74
Q

What is used to access and maintain distributed directories of information such as the kind involved with Microsoft domains?

A

Lightweight Directory Access Protocol (LDAP)

75
Q

Which protocol uses port 22?

A. FTP
B. TELNET
C. SSH
D. HTTP

A

C. SSH

76
Q

Which of these addresses needs to be configured to enable a computer access to the Internet or two other networks?

A. Subnet mask
B. Gateway address
C. DNS address
D. MAC address

A

B. Gateway address

77
Q

The IP address 128.0.0.1 would be part of what IPv4 class?

A. Class A
B. Class B
C. Class C
D. Class D

A

B. Class B

78
Q

What technology assigns addresses on 169.254.0.0 network number?

A. DHCP
B. Static IP
C. APIPA
D. Class B

A

C. APIPA

79
Q

What type of IPv6 address is commonly assigned to client computers?

A. Unicast
B. Anycast
C. Multicast
D. FF00

A

A. Unicast

80
Q

You want to test the local loopback IPv6 address. Which address would you use?

A. 127.0.0.1
B. ::1
C. FE80::/10
D. ::0

A

B. ::1

81
Q

Which of these would be used for streaming media?

A. TCP
B. RDP
C. UDP
D. DHCP

A

C. UDP

82
Q

Which for is used by the IMAP protocol?

A. 53
B. 80
C. 110
D. 143

A

D. 143

83
Q

Which protocol sends and receives information in an encrypted manner by default?

A. FTP
B. HTTP
C. HTTPS
D. POP3

A

C. HTTPS

84
Q

Which IP address can be a gateway for computer using the IP address 10.58.64.192 and a subnet mask of 255.255.255.0?

A. 10.58.64.255
B. 10.58.64.1
C. 10.58.64.0
D. 10.59.64.1

A

B. 10.58.64.1

85
Q

User can receive email but cannot send any. Which protocol is not configured properly?

A. POP3
B. FTP
C. SMTP
D. SNMP

A

C. SMTP

86
Q

Dial-up utilizes the plain old telephone service/public switch telephone network.

A

POTS is that simple landline that comes into a home allowing a person to make phone calls.

PSTN is the entire set of hardware and technologies at a telephone company’s central office that controls POTS connections.

87
Q

What is a digital technology developed to combat the limitations of PSTN where users can send data, talk on the phone, fax, all from one line?

A

Integrated Services Digitial Network (ISDN)

88
Q

ISDN has two types of services:

A

BRI: Basic Rate ISDN: 128 Kbps. Two equal B channels at 64 Kbps each for data and one separate 16 Kbps D channel for timing.

PRI: Primary Rate ISDN: 1.536 Mbps, runs on T-1 circuit, 23 equal 64 Kbps channels and one 64 Kbps D channel for timing.

89
Q

Fiber optic cable’s can run that much higher data transfer rates than copper based cables.

A

Download speeds are from 3 to 150 Mbps.

Upload speeds are from 1 to 35 Mbps.

Cable Internet and fiber optic Internet services are common in the United States and in many other countries.

90
Q

What is a wireless technology that offers high speed connections within the 4G cellular range but over much larger distances than a standard Wi-Fi access point could, on the average 50 kilometers?

A

Wi-Max

91
Q

What uses a parabolic antenna (satellite dish) to connect to be a line of sight to a satellite?

A

Satellite connectivity

There can be electrical and natural interference and latency is a problem where there can be a delay of .5 seconds to 5 seconds.

92
Q

What forwards an external network port to an internal IP address and port?

A

Port forwarding

93
Q

What enables you to specify outgoing ports that your computer uses for special applications, and their corresponding and inbound ports will be open automatically when the sessions are established?

A

Port triggering

94
Q

What is the process of modifying IP addresses as information crosses a router?

A

NAT (Network Address Translation)

95
Q

What is an area that is not quite on the Internet and not quite part of your LAN?

A

DMZ (Demilitarized Zone)

96
Q

What is a feature that attempts to prioritize streaming media, such as VoIP phone calls and audio or video playback, over other types of network traffic?

A

QoS (Quality of Service)

97
Q

What is a standard used by many router manufactures to make connecting to a wireless network easier for the user?

A

WPS (Wi-Fi Protected Setup)

98
Q

What is the time it takes for sent data packets to be received by a remote computer called?

A

Latency

99
Q

What is a small group of computers, often 10 or less, which share the same network name?

A

Workgroup

100
Q

What is one or more computers that are in control of the network and enabling for more computers, more simultaneous access, and centralized administration?

A

Domain

101
Q

How do you configure a HomeGroup?

A

Start > Control Panel > HomeGroup

102
Q

What are the two ways to map a network drive?

A

Open Windows Explorer, click Tools on the menu bar and Map Network Drive.

These network drives are map according to the universal naming convention which is
\computername\sharename

Map network drives can also be done in the command prompt with the Net Use command.
Example: net use y: \Music-Box\data

103
Q

What were developed so that telecommuters, sales people, and others could connect to the office from a remote location?

A

Virtual Private Networks (VPNs)

Open Network and Sharing Center, select the Set Up a New Connection or Network, Connect to a Workplace and select VPN.

104
Q

This tab of Internet explorer allows you to select the default homepage, delete browsing history and cookies, and modify the appearance of the browser.

A

General tab

105
Q

This tab of Internet Explorer creates and modifies levels of security zones.

A

Security tab

106
Q

This tab of Internet Explorer lets you configure the blocking level of cookies.

A

Privacy tab

107
Q

This tab contains the parental controls and content advisor, secure certificate information that deals with encrypted connections and auto complete settings.

A

Content tab

108
Q

This is the networking tab where you can set up new Internet connections and make dial-up and VPN connections.

A

Connections tab

109
Q

This tab lets you set IE as the default browser and you can configure add-ons and toolbars.

A

Programs tab

110
Q

The tab has lots of Advanced settings such as options for the text size and you can configure what type of security protocol will be used.

A

Advanced tab

111
Q

Which Internet service is wireless and has a range of 50 kilometers?

A. Fiber optic
B. WiMAX
C. Satellite
D. Wi-Fi

A

B. WiMAX

112
Q

Which of the following forwards an external network port to an internal IP address/port on a computer on the LAN?

A. Port triggering
B. Port forwarding
C. DMZ
D. WPS

A

B. Port forwarding

113
Q

Which of the following requires a Windows-created password to gain access to?

A. Workgroup
B. Client/Server
C. HomeGroup
D. Domain

A

C. HomeGroup

114
Q

You want to connect to a share on \server1\data-share. What should you use to accomplish this?

A. HomeGroup
B. Right-click the folder and select Share with.
C. Ipconfig
D. Net use

A

D. Net use

115
Q

Which tab of Internet options would you go to if you wanted to configure a proxy server?

A. General
B. Security
C. Connections
D. Advanced

A

C. Connections

116
Q

What is the command that displays current TCP/IP network configuration values?

A

Ipconfig

Ipconfig /all: shows more info including the DNS server address and the MAC address.

Ipconfig /release: releases the current IP

Ipconfig /renew: renews the IP

Ipconfig /flushdns: erases the DNS cache

117
Q

What command tests whether another host is available over the network?

A

Ping

example:
ping 192.168.0.1

118
Q

How do you ping the local loopback IPv4 and IPv6 addresses?

A

IPv4: ping 127.0.0.1

IPv6: ping ::1

119
Q

This pings the host until the command is stopped.

A

ping -t

120
Q

This pings a host a specific amount of times.

A

ping -n

121
Q

This pings the host but you can specify the amount of bytes per packet to be sent.

A

ping -l

122
Q

What command builds on ping in that it sends packets to destinations beyond the local computer’s network. It pings each router along the way between you and the final destination?

A

Tracert

123
Q

What command shows the network statistics for the local computer?

A

Netstat

124
Q

What command displays network protocol statistics that use NetBIOS over TCP/IP connections?

A

NBTSTAT

nbtstat -a shows the computer name instead of the IP address

125
Q

What command queries DNS servers to discover DNS details including the IP address of hosts?

A

Nslookup

126
Q

Here is a list of network issues:

A

No connectivity: Check connections. If using WiFi, make sure WiFi is turned on. Ping the local computer. Restart the computer.

Limited and intermittent connectivity: ping the local host. Ping the router. Release and renew the IP using ipconfig.

Slow transfer speeds: Could have slow internet connection. Check for network congestion.

Low RF signal: check the distance of the computer to the WAP. Update software on the wireless adapter and WAP. Try different antenna placement.

IP conflict: Reconfigure the second computer to a different IP address and reboot both computers. If using static IP, switch to DHCP.

APIPA address: Release and renew using ipconfig. Check the DHCP server.

127
Q

Which of the following commands will display the MAC address of a computer?

A. Ping
B. Netstat
C. Ipconfig /all
D. Ipconfig /renew

A

C. Ipconfig /all

128
Q

Which command will ping continuously?

A. Ping /?
B. Ping -t
C. Ping -l
D. Ping -n

A

B. Ping -t

129
Q

Which command will show the path of routers between your computer and a Web server?

A. Ping
B. Ipconfig
C. Tracert
D. NBTSTAT

A

C. Tracert

130
Q

You need to map a network drive to a share named data1 on a computer named Jupiter-Server. You want to use the J: drive letter. What syntax should you use if you were to do this in the Command Prompt?

A. net use J: \Jupiter-Server\data1
B. net use J \Jupiter-Server\data1
C. net use Jupiter-Server\J\data1
D. net use J: \Jupiter-Server\data1

A

A. net use J: \Jupiter-Server\data1

131
Q

One computer loses connectivity. All connectors and settings appear to be correct. What tool should you use to fix the problem?

A. Multimeter
B. PSU tester
C. Loopback plug
D. Cable tester

A

D. Cable tester

132
Q

One of your customers know longer has access to a frequently accessed website. You ping another computer and the router on the network successfully. What should you do next?

A. Check the IP configuration.
B. Ping the website.
C. Update the OS.
D. Update the AV software.

A

B. Ping the website.

133
Q

A user moves a laptop from one office to another. The patch cable and the network adapter do not appear to be working properly at the new office. The cable is plugged in correctly and tests okay when checked with the patch tester. What should you do first?

A. Check if the port on the switch is enabled.
B. Update the network adapter driver.
C. Replace the patch cable with a crossover cable.
D. Make sure the network adapter is compatible with the OS.

A

A. Check if the port on the switch is enabled.

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