Networking Ch 5-8

Front 1

What is a set of agreed-upon instructions designed to allow computers to communicate to each other across a network connection?

Back 1

Protocol

Front 2

. What is a group of networking protocols designed to work together to accomplish a task requiring communications?

Back 2

Protocol Suite

Front 3

Which of the following is not a layer in the TCP/IP reference model?

a) Network Access

b) Transport

c) Intranet

d) Application

Back 3

C.)Intranet

Front 4

Which core protocol used on the Internet moves data packets from one location on a packet-switched network to another location based on a logical address?

Back 4

IP

Front 5

What mathematical function is performed on data to ensure that it has not been changed or corrupted?

Back 5

checksum

Front 6

Which protocol translates an IP address into a MAC address?

Back 6

ARP

Front 7

Which protocol is used to send messages about the network when a route goes bad?

Back 7

ICMP

Front 8

What command is used to test IP connectivity between two hosts?

Back 8

Ping

Front 9

What protocol does the ping command use?

Back 9

ICMP

Front 10

What command tests connectivity between two hosts while showing each hop between the two hosts?

Back 10

tracert

Front 11

. Which TCP/IP protocol do IP hosts use to join or leave multicast groups and routers use to find multicast group members?

Back 11

ICMP

Front 12

What mechanism is used to send one set of packets to multiple hosts at the same time?

Back 12

Multicasting

Front 13

. What is used to determine which upper-layer protocols, services, and processors each data segment is intended for?

Back 13

Port

Front 14

What type of port ranges from 0 to 1023?

Back 14

Well-Known Ports

Front 15

What type of port ranges from 1024 to 49151?

Back 15

Registered Ports

Front 16

What type of port ranges from 59152 to 65535?

Back 16

dynamic ports

Front 17

What port does HTTP use by default?

Back 17

80

Front 18

What protocol uses TCP port 25?

Back 18

SMTP

Front 19

What protocol does the Simple Network Management Protocol use?

Back 19

161

Front 20

Which core protocol used within a TCP/IP network gets messages from one end point to another?

Back 20

TCP

Front 21

Which connection-oriented protocol ensures that data gets its final destination?

Back 21

TCP

Front 22

Which connectionless transport protocol does not guarantee reliable delivery?

Back 22

User Data Protocol (UDP)

Front 23

. What protocol is used to assign IP addresses automatically to a host?

Back 23

DHCP

Front 24

What protocol was the predecessor for DHCP?

Back 24

Bootstrap Protocol (BOOTP)

Front 25

Which protocol is used to resolve host names to IP addresses?

Back 25

Domain Name System (DNS)

Front 26

The DNS clients that make requests to the DNS server are known as ____________.

Back 26

agents

Front 27

When a DNS client needs to resolve a host name to an IP address, where will it first check?

Back 27

Its own DNS cache

Front 28

What protocol is used to transport and display web pages using a browser?

Back 28

Hyper-Text Transport Protocol(HTTP)

Front 29

. __________ is a protocol used to secure Internet communications.

Back 29

Secure Socket Layer(SSL)

Front 30

Which of the following is a basic task that SSL is not designed for?

a) server authentication

b) client authentication

c) agent authentication

d) encryption of TCP sessions

Back 30

a.)agent authentication

Front 31

. What protocol is used to send and manipulate files over a TCP/IP network?

Back 31

File Transfer Protocol(FTP)

Front 32

What protocol is used to carry voice data over a packet switched networks?

Back 32

Voice over internet protocol(VoIP)

Front 33

. What protocol is used to stream voice or video over a TCP/IP network?

Back 33

Real-Time Transport Protocol(RTP)

Front 34

What protocol is used to provide bi-directional interactive command-line access to either a remote or local host?

Back 34

TELNET

Front 35

Which protocol is used to send emails?

Back 35

SMTP

Front 36

Which protocol is used to retrieve emails?

Back 36

POP3

Front 37

What routing type is manually defined?

Back 37

Static Routing

Front 38

What measurement is used to choose the best route to a specific location?

Back 38

metrics

Front 39

What represents the number of routers it takes to get from one destination to another?

Back 39

hops

Front 40

Which type of routing protocol are RIP and IGRP?

Back 40

distance vector routing protocol

Front 41

What does a computer use to connect to a network?

Back 41

NIC

Front 42

What is used to carry data on a network?

Back 42

Medium

Front 43

On which OSI layer does the network interface card work?

Back 43

Physical

Front 44

What is the physical address assigned to a NIC?

Back 44

MAC address

Front 45

. You are given the following address: 00-90-4B-AD-2A-AC
What type of address is this?

Back 45

MAC address

Front 46

What networking device is used to modulate an analog signal in such a way that it can encode digital information?

Back 46

Modem

Front 47

What device converts one type of media to another type?

Back 47

Media Converter

Front 48

What is used to repeat a signal it receives and rebroadcast it?

Back 48

Repeater

Front 49

What is a multiport repeater?

Back 49

Hub

Front 50

What type of hub does not amplify or resend a signal?

Back 50

Passive Hub

Front 51

. What type of hub repeats the signal from one computer to all other computers or similar devices connected to a hub?

Back 51

Active Hub

Front 52

What happens when two computers send data at the same time, causing both signals to become corrupted?

Back 52

a collision

Front 53

In what type of network segment do computers have the possibility of having their signals collide with each other?

Back 53

collision domain

Front 54

What connects two network segments together, yet only forwards packets based on MAC addresses from one segment to another segment only when needed?

Back 54

bridge

Front 55

On what OSI layer does a switch operate?

Back 55

Data-Link

Front 56

Which of the following device is multiport bridge?

a) bridge

b) hub

c) router

d) switch

Back 56

d.)switch

Front 57

What device has each port as its own collision domain?

Back 57

switch

Front 58

What type of switch is used for load balancing?

Back 58

content switch

Front 59

What is referred to as a group of hosts in the Data-Link layer that share a common set of communications requirements and can be isolated from other groups?

Back 59

VLAN

Front 60

What are VLANs created with?

Back 60

switches

Front 61

What is used to identify VLANs?

Back 61

VLAN numbers

Front 62

What describes multiple VLANs carried across a single cable or network link?

Back 62

trunking

Front 63

What is used to have packets going through a switch to be copied to a single port?

Back 63

Port Mirroring

Front 64

. What can you use to limit what hosts can be connected to a switch?

Back 64

port authentication

Front 65

When you use port authentication, what is used to limit access to the network?

Back 65

MAC Addresses

Front 66

. What protocol do multiple switches on the same network use to ensure that an infinite loop is not created?

Back 66

STP

Front 67

What is used to convert digital signals from one frame format to another, specifically to convert Frame Relay into Ethernet signals?

Back 67

CSU/DSU

Front 68

Which component used to convert Frame Relay signals to Ethernet is used to receive and transmit signals from some type of WAN connection, such as T-1 or Frame Relay connection?

Back 68

CSU

Front 69

At what OSI layer do routers operate?

Back 69

Network

Front 70

What is used to protect a network from unauthorized access?

Back 70

firewall

Front 71

When a firewall analyzes a packet, what does it use to determine whether the packet is allowed based on IP address?

Back 71

access control list

Front 72

What special zone is used to connect an internal network with the Internet that is designed to hide the internal network from the Internet?

Back 72

DMZ

Front 73

Where would you place a web server that will be accessed from the Internet?

Back 73

DMZ

Front 74

. Where would you place the SQL server that will be used by web servers over the Internet?

Back 74

intranet

Front 75

What type of server acts as an intermediary between a client and other servers?

Back 75

SMB server

Front 76

What type of server is used to temporarily store recent access to the Internet so that future requests to the same web sites can be accessed from the server instead of the actual web server?

Back 76

caching proxy server

Front 77

What is used to monitor the activity of a network and notify network administrators when it identifies something as suspicious?

Back 77

IDS

Front 78

What is used to look at current conversations that go through a router so that it can figure out which packets to allow back through?

Back 78

stateful protocol analysis`

Front 79

What is used to manage and/or control network usage in order to optimize bandwidth?

Back 79

bandwidth shaping

Front 80

. What is the oldest and most widely used LAN technology in use today?

Back 80

Ethernet

Front 81

What is the most widely used Ethernet frame type used today?

Back 81

Ethernet II

Front 82

Which Ethernet frame type supports TCP/IP?

Back 82

Ethernet II

Front 83

What type of access method does Ethernet use today?

Back 83

CSMA/CD

Front 84

What type of access method is used in wireless networks?

Back 84

CSMA/CA

Front 85

. What happens when two computers broadcast at the same time on the network, causing both sets of data to be garbled?

Back 85

collision

Front 86

When a collision occurs, what do the two sending nodes do?

Back 86

They wait a random period of time and try again.

Front 87

What type of device will reduce the number of collisions?

Back 87

Switch

Front 88

What media type can carry multiple data signals at the same time?

Back 88

broadband

Front 89

What media type can carry only one data signal at a time?

Back 89

baseband

Front 90

Ethernet is considered ___________.

Back 90

baseband

Front 91

Today, what type of cable is the most common for Ethernet?

Back 91

UTP

Front 92

What is the first version of Ethernet based on?

Back 92

10 Base-5

Front 93

10Base-5 uses what type of cable?

Back 93

coaxial

Front 94

10Base-2 uses what type of cable?

Back 94

coaxial

Front 95

What was the first Ethernet standard used on UTP?

Back 95

10Base-T

Front 96

What was the first standard that supported 100 mbps for Ethernet?

Back 96

100Base-TX

Front 97

Which Ethernet standard was developed to work over fiber?

Back 97

100Base-FX

Front 98

What is the range of 100Base-FX running in half-duplex?

Back 98

400 meters

Front 99

What is the range for 100base-FX running in full-duplex on single-mode fiber?

Back 99

2,000 meters

Front 100

What is the range of 100Base-FX running in full-duplex on multi-mode fiber?

Back 100

10,000 meters

Front 101

What distance does 1000Base-LX support with single-mode fiber?

Back 101

5,000 meters

Front 102

What standard was 1000Base-X introduced as?

Back 102

IEEE 802.3z

Front 103

What is the copper version of Gigabit Ethernet?

Back 103

1000Base-T

Front 104

What IEEE standard is used for 10 Gigabit Ethernet?

Back 104

802.3ae

Front 105

What 10 Gigabit Ethernet standard supports either shielded or unshielded twisted-pair wiring?

Back 105

10GBroad-T

Front 106

What do you call data that is sent to all computers on a network or network segment?

Back 106

broadcast

Front 107

Which type of device reads the MAC address of the destination and sends it to the port where the destination host is?

Back 107

switch

Front 108

Which of the following is considered a legacy device?

a) hub

b) switch

c) router

d) gateway

Back 108

a.)hub

Front 109

How many collision domains does an eight-port hub have?

Back 109

1

Front 110

What is another term for link bonding?

Back 110

link aggregation

Front 111

How many meters can Category 5 cable reliably carry 100 mbps of data.

Back 111

100

Front 112

What technology is usually used with wireless technology that will limit who can connect to a wireless network?

Back 112

MAC address filtering

Front 113

To connect to a wireless network, you would start with what?

Back 113

SSID of the router

Front 114

What helps protect data that is sent using a wireless network?

Back 114

encryption

Front 115

How many channels does 802.11g support?

Back 115

14

Front 116

. Which wireless mode does not use a central WAP?

Back 116

ad-hoc

Front 117

Which wireless mode uses a central WAP?

Back 117

infrastructure mode

Front 118

Which wireless encryption is considered the weakest?

Back 118

WEP

Front 119

Which wireless encryption is considered the strongest?

Back 119

WPA2 enterprise

Front 120

Which wireless encryption uses digital certificates for encryption?

Back 120

WPA2 enterprise

Front 121

Which wireless encryption uses a common password for encryption?

Back 121

WPA personal

Front 122

. What communications term describes the establishment of a dedicated communications channel for the duration of a given transmission?

Back 122

circuit switching

Front 123

. What traditional technology has been used for phone calls, but is not done with automatic phone switches?

Back 123

circuit switching

Front 124

What technology takes a voice communication, breaks the data into small packets, and sends the packets from one network segment to another?

Back 124

packet switching

Front 125

What technology has data broken into smaller packets so that each packet can go through

Back 125

packet switching

Front 126

In what type of technology is the whole message routed to its destination one hop at a time?

Back 126

message switching

Front 127

What technology does email use to send messages?

Back 127

message switching

Front 128

What communication link is established between two points in a larger network, such as the Internet?

Back 128

virtual circuit switching

Front 129

What type of technology does a VPN use?

Back 129

virtual circuit switching

Front 130

Which type of cables uses electrical pulses to transmit network communications?

Back 130

copper

Front 131

Which type of cabling is the preferred media for WANs?

Back 131

fiber

Front 132

. What type of cabling is light to carry data?

Back 132

fiber

Front 133

. What type of wireless communications is seen in WAN environments?

Back 133

microwave

Front 134

What can you use to overcome the limitations of microwave towers and the curve of the earth?

Back 134

satellites

Front 135

What is the ideal position for satellites that allow depending network connectivity?

Back 135

geosynchronous orbit

Front 136

What type of orbit covers the northern part of the earth?

Back 136

Molniya orbit

Front 137

What is the most common form of radio frequency WAN media?

Back 137

cellular

Front 138

What topology uses transceiver tower to broadcast in a circular range?

Back 138

cellular

Front 139

. Why do today’s cell towers use three directional antennas?

Back 139

to increase range

Front 140

What technology does a common dial-up service use that’s based on the standard telephone service?

Back 140

POTS

Front 141

Which is the least expensive Internet access method?

a) cable

b) DSL

c) POTS

d) ATM

Back 141

c)POTS

Front 142

What modem compression standard allows connections of 50 kbps, but has an effective speed of 300 kbps for text files?

Back 142

V.44

Front 143

What refers to the entire worldwide telephone network?

Back 143

PSTN

Front 144

What is the point at which the network provider’s responsibility ends when connecting a site to its network?

Back 144

demarc

Front 145

When looking at PSTN, what part of the network goes from the switching facility to a house?

Back 145

last mile

Front 146

What is the first popular standard meant to replace POTS that can carry voice, video, and other services in a digital format over the PSTN?

Back 146

ISDN

Front 147

What is the throughput of a B channel on a BRI-ISDN?

Back 147

64kbps

Front 148

What is the total bandwidth for a BRI-ISDN?

Back 148

144kbps

Front 149

. What is a telephone exchange or switch called?

Back 149

PBX

Front 150

What protocol does ISDN-BRI use to establish and break circuit-switched connections?

Back 150

Q.931

Front 151

What technology allows you to connect over the Internet using PSTN while talking on the phone?

Back 151

DSL

Front 152

. In the United States, how many data channels are available for ISDN-PRI?

Back 152

23

Front 153

Approximately how much data can an ISDN PRI carry?

Back 153

1.5 mbps

Front 154

How many data channels does an E1 carry?

Back 154

30

Front 155

. What early packet-switched network technology originally designed for analog technology?

Back 155

X.25

Front 156

What technology uses Packet Assembly/Disassembly (PAD) facilities?

Back 156

X.25

Front 157

What is the speed of a T-3 line?

Back 157

44.7 mbps

Front 158

What WAN technology is based on cells 58 bytes in size?

Back 158

ATM

Front 159

Which of the following is based on fiber-optic cables?

a) SONET

b) Frame Relay

c) ATM

d) DSL

Back 159

a.)SONET

Front 160

What is the speed of an OC-3?

Back 160

155.5 mbps

Front 161

Which of the following is used create a secure connection to a corporate network from home using the Internet as the network medium?

a) VPN

b) ATM

c) Frame Relay

d) ISDN-BRI

Back 161

a)VPN