Networking Flashcards Preview

A+ 220-801, 220-802 Q&A > Networking > Flashcards

Flashcards in Networking Deck (199)
1

Which parameter of the ping command will cause the command to continue sending messages until interrupted?

-t

2

Which parameter of the ping command will display the host name of the IP address you are pinging, if successful?

-a

3

What is the bit length of IPv6 addresses?

128

4

What is the maximum transmission distance for Bluetooth 1.0 devices?

100 meters or 300 feet

5

What is the maximum transmission distance for Bluetooth 2.0 devices?

10 meters or 33 feet

6

What is the maximum transmission distance for Bluetooth 3.0 devices?

1 meter or 3 feet

7

What is the maximum indoor and outdoor distance for 802.11a?

Indoors, 100 meters or 300 feet;
Outdoors, 350 meters or 1,200 feet

8

What is the maximum indoor and outdoor distance for 802.11b?

Indoors, 150 meters or 492 feet;
Outdoors, 500 meters or 1,640 feet

9

What is the maximum indoor and outdoor distance for 802.11g?

Indoors, 150 meters or 492 feet;
Outdoors, 500 meters or 1,640 feet

10

What is latency in a network?

The amount of delay a network can experience

11

How can you ensure that your SSID is not seen by computers in other offices?

Do not broadcast the SSID

12

Why would you use biometric security devices with a wireless connection?

To ensure that only that user can connect into the network

13

What is the maximum transmission speed supported by the 802.11b standard?

11 Mbps

14

What is the maximum transmission speed supported by the 802.11g standard?

54Mbps

15

What is the maximum transmission speed promised by the 802.11n standard?

540 Mbps

16

What is the maximum transmission speed supported by the 802.11a standard?

54 Mbps

17

Which network configuration needs to be checked when you are not able to resolve a web site by its URL but you can browse the internet by using IP addresses?

Domain Name System (DNS) server configuration

18

Which service determines the IP addresses associated with the NetBIOS name of the computer?

Windows Internet Naming Service (WINS)

19

If a computer is manually cofigured with its IP address, and the IP address is one that duplicates existing IP addresses on the network, what does the subnet mask appear as?

0.0.0.0

20

Which service translates domain names into numeric IP addresses?

DNS

21

Which common command is used to check the Internet connectivity from the command prompt?

ping

22

What must be different in the network configuration for each client if TCP/IP is used as the standard protocol?

The IP addresses

23

Which authentication is required with WPA?

802.1X authentication

24

Which protocol is used by Wireless FIdelity (Wi-Fi) networks?

802.11 wireless protocol

25

Which radio frequency band is used by microwaves and cordless telephones?

2.4 GHz

26

Which Wi-Fi networking standard operates in the 5 GHz frequency?

802.11a

27

Which three Wi-Fi networking standards operate within the 2.4 GHz radio frequency band?

802.11b, 802.11g, and 802.11n

28

What is the result of executing the IPCONFIG command from the Run dialog box?

A black window appears and then disappears automatically

29

Which TCP/IP command line utility should you use to display the IP address and subnet mask for a Windows computer?

ipconfig

30

Which ipconfig switch displays the current IP configuration on a workstation?

/all

31

Which command releases the tcp/ip configuration information obtained from a dynamic host configuration protocol (DHCP) server?

ipconfig /release

32

Which command switch should you use with ipconfig to display the other available command switches and their description?

/?

33

Which command is used to find the dhcp server that gave your computer an IP address?

ipconfig /all

34

Which operating systems include the ipconfig command line utility?

Windows NT, Windows 2000, Windows Server 2003, Windows XP, Windows Server 2008, and Windows Vista

35

What are the results of running the netstat command?

A listing of the open ports

36

What is the purpose of the Zero configuration service?

It automatically connects to a preferred wireless network when the network is in range

37

How does communication occur in full duplex mode?

You can transmit and receive the signal on the same channel at the same time

38

How does communication occur in half duplex mode?

A single communication channel is used for both transmitting and receiving

39

How does communication work in simplex mode?

Two separate channels are used for transmitting and receiving the signal

40

Which internet connection has a line of sight requirement?

Satellite

41

What dial-up internet connections use a standard RJ-11 telephone jack to establish a connection between the modem and the ISP?

Digital subscriber line (DSL) and analog modem connections

42

What internet connectivity type always uses a coaxial cable to establish a two-way connection to the internet?

Cable

43

What is the maximum transmission speed of Category 6 (Cat6) cable?

10 Gbps

44

What is the maximum length of RG-58 ThinNet coaxial cable?

Approx. 185 meters (607 feet)

45

What is the maximum length of RG-8 ThickNet coaxial cable?

Approx. 500 meters (1,640 feet)

46

What is the maximum transmission speed of Category 5e cable?

1000 Mbps or 1 Gbps

47

What does a cable rated as "plenum" indicate about the cable?

It will not produce toxic gas when it burns

48

What is the main difference in the physical composition of UTP and STP cable?

Mesh shielding

49

Which transmission cable has a transmission range up to 100 meters or 328 feet?

Unshielded twisted pair (UTP) or shielded twisted pair (STP) cable

50

What is the transmission distance supported by multi-mode fiber optic cable?

3000 feet

51

What is the transmission distance supported by single-mode fiber optic cable?

Approx. 20 miles

52

What are the two most popular connectors available for fiber optic cabling?

The ST and SC connectors

53

Which technology allows voice data to be transmitted aver a company's computer network?

VOIP

54

What type of port is used to connect a computer to a 100BaseT network?

RJ-45

55

What type of port is included on a dial up modem?

RJ-11

56

What should you do to keep to wireless access points that are in close proximity from interfering with each others' signals?

Configure them to use different channels

57

Which type of wireless network interference is caused by competing wireless signals?

Radio Frequency Interference (RFI)

58

Which type of wireless network interference is caused by electrical devices, such as fluorescent lights?

Electromagnetic Interference (EMI)

59

Which TCP port is used by Hypertext Transfer Protocol (HTTP)?

Port 80

60

Which TCP port is used by Simple Mail Transfer Protocol (SMTP)?

Port 25

61

Which TCP port is used by Internet Message Access Protocol version 4 (IMAP4)?

Port 143

62

Which TCP port is used by Post Office Protocol version 3 (POP3)?

Port 110

63

In which three Open System Interconnection (OSI) layers do the wide area network (WAN) protocols operate?

The Physical, Data Link, and Network layers

64

Which Operating System Interconnection (OSI) layer defines network addresses?

The Network layer

65

Which Operating System Interconnection (OSI) layer defines the electrical, mechanical, procedural, and functional specifications for activating, maintaining, and deactivating the link between communicating network systems?

The Physical layer

66

In which layer of the OSI model would a cable break that resulted in a no link light on the switch occur?

The Physical layer

67

Which OSI layer provides reliable transit of data across a physical network link?

The Data Link layer

68

Which OSI layer transmits segments of data from the session layer across a network?

The Transport layer

69

Which OSI layer establishes, manages, and terminates service requests and responses that occur between applications that are running on different devices on the network?

The Session layer

70

Which OSI layer provides codes and conversion functions that are applied to application layer data?

The Presentation layer

71

Which OSI layer interacts with software that acts as a communication component?

The Application layer

72

How many binary bits does an IPV4 address include?

32 binary bits

73

What is the decimal range of values in each octet of an IPv4 address?

0 to 255

74

What is the default mask for Class A networks?

255.0.0.0

75

What is the default mask for Class B networks?

255.255.0.0

76

What is the default mask for Class C networks?

255.255.255.0

77

What is the default subnet mask of the IP address 192.168.200.1?

255.255.255.0

78

What is the IP address range that can be assigned in Class A networks?

1.0.0.0 - 126.255.255.255

79

What is the IP address range that can be assigned in Class B networks?

128.0.0.0 - 191.255.255.255

80

What is the IP address range that can be assigned in Class C networks?

192.0.0.0 - 223.255.255.255

81

Which type of radio network is made up of radio cells served by a fixed transmitter known as a base station?

A cellular network

82

Which optical source emits photons in a coherent beam?

Light Amplification by Stimulated Emission of Radiation (laser)

83

What three data rates are defined for operation over twisted-pair and optical fiber cables for Ethernet networks?

10 Mbps for 10BaseT
100 Mbps for Fast Ethernet
1000 Mbps for Gigabit Ethernet

84

Which serial bus interface standard offers high-speed communications and isochronous real-time data services for digital audio and video?

FireWire, also referred to as i.Link or IEEE 1394

85

Which IEEE standard defines the Physical layer and the media access control (MAC) sublayer of the Data Link layer for a wired Ethernet?

IEEE 802.3

86

Which IEEE standard provides an over-the-air interface between wireless devices such as client computers, printers, or wireless routers?

IEEE 802.11

87

Which protocol uses a cryptographic system that involves two keys, private and public, to encrypt data across the internet?

Secure Socket Layer (SSL)

88

What is the address convention for URLs that require an SSL connection?

https://

89

Which Transport layer protocol provides an interface between IP and upper layer processes?

User Datagram Protocol (UDP)

90

What are the four fields of a User Datagram Protocol (UDP) header?

Source port, destination port, length, and checksum

91

Which lower-layer protocol provides communication between computers and other network devices by using unique global addressing?

IP

92

What could be the reason you cannot ping 127.0.0.1 or ping localhost?

TCP/IP is not loaded properly on your computer

93

What is the standard IP address used for a loopback network connection?

127.0.0.1

94

Which node on a network serves as an access point to another network?

A default gateway

95

Which network mask is used to determine the number of bits in an octet that identifies the subnetwork and the number of bits to provide room for host addresses?

A subnet mask

96

Why should you configure your Windows XP computer with an IP address in the alternate configuration of TCP/IP properties?

The alternate configuration ensures that you will have an IP address if your computer does not receive an IP address from a DHCP server

97

Which parameter of the ipconfig command restores the DHCP configuration for adapters?

/renew

98

Which parameter of the ipconfig command reorganizes contents of the DNS client resolver cache?

/flushdns

99

Which parameter of the ipconfig command exhibits contents of the DNS client resolver cache?

/displaydns

100

Which parameter of the ipconfig command starts manual dynamic registration for DNS names and IP addresses?

/registerdns

101

What is the maximum speed limit supported by a T1 line?

1.544 Megabits per second (Mbps)

102

The IP address 192.168.0.1 is reserved for which type of network?

Private network

103

Which types of unshielded twisted pair (UTP) cables support data transfer up to 1000 Megabits per second (Mbps)?

CAT5e and CAT6 UTP cables

104

Which unshielded twisted pair (UTP) cab;es can support Gigabit Ethernet cards?

CAT5e and CAT6

105

What hardware device can connect dissimilar networks and can operate at different layers of the Open Systems Interconnection (OSI) model?

Gateway

106

Which hardware device can connect similar networks and can separate the network traffic on each segment?

Bridge

107

The IP address 172.16.0.0 is reserved for which type of network?

Private network

108

Which two details can you use to access a router's configuration page through a web browser?

The router's IP address and the router name

109

Which command should you use to access the router configuration from the command prompt?

Telnet

110

Which hardware device operates at the Physical layer (Layer 1) of the OPen Systems Interconnection (OSI) model to provide connectivity to network computers?

A hub

111

Which color of the Light-emitting diode (LED) light on a network interface card (NIC) usually indicates a collision on the network?

Amber

112

Which hardware device operates at the Data Link layer of the OSI model to provide connectivity to network computers?

A switch

113

Where can you set a static address on a Windows XP computer?

In the Internet Protocol (TCP/IP) Properties dialog box

114

Which tool is used to enable file and print sharing on a Windows XP computer?

Right-click My Network Places, and choose Properties

115

Which protocol is used to transmit data securely between a File Transfer Protocol (FTP) client and an FTP server?

Secure File Transfer Protocol (SFTP)

116

Which ports are used by FTP?

Ports 20 and 21

117

Which protocol is used for transferring files from one computer to another?

FTP

118

Which tool enables you to connect to your Windows XP computer across the Internet from virtually any computer?

Remote Desktop Connection

119

Which Windows program is used to set up internet connections?

Internet connection wizard

120

Which program is used on a Windows computer that allows multiple users to access applications or data stored on a remote computer over a network connection?

Terminal Services

121

Which authentication protocol is used on a Windows XP computer that is logging into an Active Directory domain?

Kerberos

122

Which command is used to trace the IP traffic route through intermediate routers and system network interfaces, identifying the full path traveled from source to destination?

tracert

123

How do you configure the new wireless router that you bought for your home business?

Configure the router with your browser from a connected computer

124

How do you update the firmware on your new wireless router that you bought for your home or business?

Connect to the router with your browser from a connected computer and download the update to the firmware

125

Which command is used to display the routes in the routing table on a router?

route

126

How do you change the IP address on your new wireless router that you bought for your home business?

Connect to the router with your browser from a connected computer and change the configuration

127

Which device enables you to connect a wired Ethernet device to a wireless network?

Wireless bridge

128

Which device is used to extend the range of an existing wireless network?

Wireless repeaters

129

Where do you go to check the signal strength of your wireless connection?

Right-click the wireless connection icon and choose Status

130

At which band does Bluetooth technology operate?

2.45 GHz

131

What is the radio frequency at which IEEE 802.11g operates?

2.4 GHz

132

What is the radio frequency at which IEEE 802.11a operates?

5.0 GHz

133

What is the maximum transmission speed supported by CAT5 cables?

100 Mbps

134

After plugging a cable into your NIC card, why do you not get a link light on the NIC card?

Your cable is not plugged into a hub or switch

135

How can you test whether TCP/IP is properly loaded on your NIC card?

Issue the command ping 127.0.0.1 or ping localhost

136

Which type of cable is used in a 10BASE-T ethernet standard?

CAT3 or CAT5 unshielded twisted pair (UTP) cable

137

How do you test the physical connection between the computer and a switch?

Check the link lights on the NIC and switch

138

Which tool is used to disable a NIC card on a computer running Windows XP?

Device Manager

139

Which file on Windows XP contains static DNS mappings?

HOSTS file

140

Which service is used to resolve an IP address to its Fully Qualified Domain Name (FQDN)?

DNS

141

Which protocol resolves an IP address to a Media Access Control (MAC) address?

Address Resolution Protocol (ARP)

142

Which service allows Windows workstations to access UNIX servers by name?

DNS

143

Which command is used on a computer running Windows XP to display the DNS server that the computer is using?

ipconfig /all

144

Which connector is used for 10base-t network cables?

rj-45

145

Which cable is used to connect two workstations directly without using a hub or a switch?

A crossover cable

146

Which tool is used to measure the components current in amperes and volts?

Multimeter

147

Which tool is used to measure the output of a computer's power supply?

Multimeter

148

Which device is used for locating faults in unshielded twisted pair (UTP) and coaxial cables?

Time-domain reflectometer (TDR)

149

Which component do you install in a computer to establish a physical connection to the network media?

Network Interface Card (NIC)

150

Which devices are used to connect workstations in a 100-baseT network?

Switches and hubs

151

On which layer of the OSI reference model does a switch operate?

The Data Link layer or Layer 2

152

On which layer of the OSI reference model does a router work?

The Network layer or Layer 3

153

Which device is the combination of a bridge and a router?

Brouter (Bridge Router)

154

Which devices are used to forward packets between multiple networks?

Routers or switches

155

What device(s) should you use to isolate broadcast traffic on your LAN to certain segments?

A router or switch

156

What are the two types of satellite connections?

Unidirectional and bidirectional

157

Which type of light is used for line-of-sight wireless communications for local area networks?

Infrared

158

Which unit is used to measure attenuation?

Decibels

159

Which term, apart from latency, is used for a delay that occurs in satellite connections?

Propagation delay

160

Which two wireless networks provide data throughput of 54 megabits per second (Mbps) and uses orthogonal frequency-division multiplexing (OFDM) encoding?

The 802.11a and 802.11g wireless networks

161

Which radio frequency is used to operate 802.11b and 802.11g wireless networks?

2.4 GHz

162

Which cable is used with rj-45 connectors?

Unshielded twisted pair (UTP) or shielded twisted pair (STP)

163

Which two default elements should you change to secure a newly configured wireless network from unauthorized access?

SSID and password

164

Which type of address should you specify in wireless clients when you configure a wireless access point as a router?

Gateway address

165

Which command is used to determine the MAC address of the computer's network interface card (NIC)?

ipconfig /all

166

What is the data rate speed for the 802.11g wireless standard?

54 Mbps

167

What is the data rate speed for the 802.11b wireless standard?

11 Mbps

168

What is the data rate speed for the 802.11b+ wireless standard?

22 Mbps

169

In which two layers of the OSI model is the Wired Equivalent Privacy (WEP) used?

The Data Link layer and the Physical layer

170

Which standard allows devices , such as keyboards, printers, modems, or a mouse, to communicate wirelessly with other devices in proximity?

Bluetooth

171

Which subnet mask is used by Windows while using Automatic Private Internet Protocol Addressing (APIPA)?

255.255.0.0

172

What is the maximum distance to which the Bluetooth technology can transmit data?

Class 1: 100 meters
Class 2: 10 meters
Class 3: 1 meter

173

In how many channels does the Bluetooth protocol divide its operating band?

79 channels

174

Which type of topology is used to connect devices with each other by using Bluetooth?

Point-to-Point

175

Which hardware device routes data from a local area network (LAN) to a phone line or other network connection?

Router

176

What is the best method to provide shared internet access without leaving a computer on at all times?

Router-based internet sharing

177

How many network cards are required in each computer when internet access is shared via a router?

One in each computer

178

To which port on the router or switch should you connect a computer to to access the internet?

To the LAN port

179

Which two types of network cables are used in wired networking?

Coaxial cable and twisted-pair cable

180

Which connector is used for high speed CAT7 LAN cabling?

GG45

181

What IP address range does Automatic Private IP Addressing (APIPA) use?

169.254.0.1 to 169.254.255.255

182

How do you avoid getting an APIPA address if the DHCP server is down?

Configure an alternate address

183

How many IP addresses does a router have?

Two: one for each network that it is connecting; External and internal

184

When accessing the internet by using a cable modem, who decides on whether to use a static or a dynamic IP address on the computer?

The ISP

185

Which service allows DHCP clients to obtain IP addresses even in cases when the DHCP server cannot provide one?

Automatic Private IP Addressing (APIPA)

186

Which new version of the IP protocol has expanded the range of IP addresses from 32 bits to 128 bits?

IPv6

187

Why would you Windows XP computer get an IP address of 169.254.0.8?

Your computer did not receive an IP lease from a DHCP server

188

What device must be installed in a computer to connect the computer to other computers or a network?

A network adapter

189

What are the two main types of network cables?

A straight through cable and a crossover cable

190

Which type of network cable is required to directly connect one computer to another computer?

A crossover cable

191

How many connection devices are needed to enable the internet connection sharing (ICS) on a Windows XP based computer?

Two

192

Which type of IP address is obtained by the network adapter when the internet connection sharing (ICS) is enabled on a computer?

Static

193

Which IP address and subnet mask are obtained by the network adapter that is connected to a home network or to a small office network when you enable internet connection sharing?

A new static IP address of 192.168.0.1 with a subnet mask of 255.255.255.0

194

Which feature optimizes network traffic on the network connection page?

Quaity of Service (QoS) Packet Scheduler

195

If the Internet Connection Firewall feature is on, which proxy will you be connected to while performing a telnet to port 389?

The local Lightweight Directory Access Protocol (LDAP) proxy

196

Which service allows connections to Windows-based computers?

Client for Microsoft Networks

197

What reduces the broadcast distance of a wireless device without reducing signal speed?

A reduction in signal strength

198

What should a technician do to install TCP/IP protocol on a Windows XP computer?

Install TCP/IP using Add/Remove Windows Components

199

What is the commonly used protocol for exchanging files over the internet or an intranet network that supports the TCP/IP protocol?

FTP