Chapter 8 Flashcards
Networking Concepts and Technology
1
Q
What does SOHO stand for
A
Small office home office
2
Q
What are the 2 major buckets that connecting devices fall under
A
Wired and wireless
3
Q
What are the two categories of internet connection?
A
Dial up
Broadband
4
Q
Give one of the oldest ways of communicating with ISPs
A
Through dial up connection
5
Q
Why not use Dial up
A
Slow because of limitations to download 53 Kbps
Variety of broadband options
6
Q
What kind of modems does Dial up use
A
Operate over regular phone lines
7
Q
Why do you believe dial up is still being used?
A
Because high speed access is not available
8
Q
Advantages of POTS
A
1 Easy to configure
2 Cheapest online solution
3 Only hardware require modem and telephone line
4 you can use it wherever there is a phone line
9
Q
What is DSL
A
Digital Subscriber Line
10
Q
What do you need to use a DSL
A
DSL modem
Network card
Network cable with RJ45 connector
Phone cord
11
Q
Select what is needed to use a DSL () DSL modem () RJ11 connector () RJ45 connector () Phone cord () Phone outlet () Wireless internet
A
All except Wireless internet
12
Q
What can you do to allow multiple devices to use your DSL
A
Plug computer into a router instead of directly into the DSL modem and then plug the router into the DSL
13
Q
List the different forms of DSL
A
HDSL high bit DSL VHDSL very high bit DSK RADSL Rate adaptive digital subscriber line SDSL Symmetric DSL ADSL Asymmetric DSL
14
Q
What is the most popular in home form of DSL
A
ADSL
15
Q
Why can ADSL and voice communication work at the same time?
A
Because they use different frequencies on the same wire
16
Q
Advantages of DSL
A
Much faster than dial up
Bandwidth is not shared with other users
More reliable
17
Q
Disadvantages of a DSL
A
May not be available in your area
Needs more hardware than Dial up
Cost more
May not work in older buildings or homes
18
Q
List hardware needed for DSL
A
Network card Network cable DSL modem Phone cord Line filter
19
Q
What are cable modems
A
Provide high speed internet access through cable service
20
Q
What is DOCSIS
A
Data over cable service internet specification
21
Q
List the advantages of cable
A
Faster
No telephone lines needed
Requires more hardware than dial up
Very reliable
22
Q
List disadvantages of cable
A
- Cable may not be available in a area
- Cable requires more hardware than Dial-up
- Your bandwidth is shared with everyone on your network segment
- Cost is higher
23
Q
How can cable modems be connected
A
Directly to a computer
To a router
A wireless router
24
Q
Give advantage of Fibre optic internet
A
Fast
Reliable
25
Give a disadvantage of Fibre optic internet
Availability
| Price
26
Explain line of sight wireless
Requires a clear line of sight between the receiver and the transmitter
27
Give another word for delay with regards to satellite
Latency
28
List disadvantages of satellites
Super slow connections
Delay
Tricky installation
29
Advantages of satellite
1- Useful when u r in an area where it's difficult or impossible to run a cable
2-one satellite can provide a signal to a number of receivers simultaneously called point-to-multipoint connection
30
Is GSM and CDMA compatible
No. Not for 3G technology
31
```
MiFi is used in which of these external network connection?
Dial up
DSL
Cable
Fibre optic internet
Satellite
Cellular
Radio Frequency
```
Cellular
32
Provide the internet connection type and speed
```
Dial up-up to 55 Kbps
Cellular-up to 20 Mbps
RF-up to 20Mbps
Satellite-25 Mbps
dsl-30 Mbps
Cable-50mbps
Fibre optic-1gbps
```
33
What are the 2 choices for internal Network connection
Wired
| Wireless
34
Which is faster and more secure. Wired or wireless?
Wired
35
What does UTP stand for
Unshielded twisted pair
36
When choosing a wired network connection you need to think about the following
Speed
Distance
Cost
37
Which company makes Bluetooth
Bluetooth
38
What is the least popular broadband connection in use today
Radio Frequency broadband access
39
Which internet connection type is the slowest?
Dial up
40
Which 2 internet connection type are good for rural areas
Radio Frequency and satellite
41
Which internet connection type is very fast and expensive
Fibre optic
42
Which internet connection type uses analog phone lines
Dial up POT
43
List the 7 internet connection types
```
Dial up POT
Cellular
Radio Frequency
Satellite
DSL
Cable
Fibre optic
```
44
Your choice of internal connections can be lumped into 2 groups. What are they?
Wired
| Wireless
45
Which is faster and more secure, wired or wireless networks?
Wired
46
What is Ethernet?
A standard for wired computer network communications which specifies that only one computer can talk on the network at one time
47
What technology does WLAN use
IEEE 802.11
48
What is the order of the types of IEEE 802.11?
a, b, g, n, ac
49
Which of the 802.11 standard type is the fastest
ac
50
Which of the 802.11 standard type is the slowest
b
51
Which of the 802.11 standard type is backward compatible with b
g
52
Which of the 802.11 standard type use the range that many other devices use?
b
53
Which of the 802.11 standard type use MIMO
n
54
Which 3 of the 802.11 standard type have a 2.4 GHz frequency
b, g, n
55
Which wireless device was designed to be a PAN
Bluetooth
56
What does PAN represent
Personal area network
57
Which network is formed on an adhoc basis
Bluetooth
58
What is a piconet
A very small network
59
What is the maximum number of devices that a Bluetooth enable device can communicate with on one piconet?
7
60
Give an example of an infrared device
Tv
61
Which device uses walk up point to point technology
Infrared
62
How is a modem used
Used to connect to a network via telephone lines
| Convert digital to analog
63
What is a switch
The network connectivity device at the center of most networks
64
What is the the difference between switches and hubs
Switches examine the header of the incoming data packet and forward it properly.
Hubs pass on all traffic
65
What's similar about hubs and switches
Pass data packets
| Have one or more status light indicators
66
What is an access point
Any point that allows a user into a network
67
Can wireless access points connect to other wireless access points or wireless routers
Yes
68
Which network device is highly intelligent
Router
69
Which network device can connect multiple network types to each other?
Router
70
What are the differences between s router and a switch?
1-Router are much more advanced
2-swirches use Mac addresses to direct traffic, routers use IP addresses
3-Routers can connect more devices than switches
71
What is the difference between IP addresses and MAC addresses
IP addresses will change Mac addresses is the number on the NIC card and it doesn't change.
72
True or false
| All connections lead back to wired ones at some point.
True
73
What are firewalls used for
Filter network traffic by using ACL (Access control list)
74
What are the 2 types of firewalls
Network based
| Host based
75
How is a DMZ formed
When network based firewalls create a space between 2 firewalls where there is no protection
76
Which is usually confined to one office or building?
LAN
77
Which wireless network connection configuration spread multiple geographical areas
WLAN
78
What allows multiple devices to connect?
Switch
79
What allows multiple networks to connect?
Router
80
What is Network protocol?
The language that computers speak
81
What does TCP/IP
Transmission Control Protocol/ Internet Protocol
82
What is a host?
A device with an IP address
83
Jan has a device that she cannot assign an IP address. Is this device a host
No
84
What is an octlet
8 bits
85
Are ip address flat or hierarchical?
Hierarchical
86
What are the 2 IDs that make up IP addresses?
Network ID and host ID
87
Which is always first in an IP address?
The network id
88
What follows the network id in the IP address
Host id
89
Does the network id have to be a specific length?
No
90
Should the network id be set to all zeroes?
No
91
What does 0 represent in the host id
This network
92
What does a host of of all 1s means
All host on this network
93
What is a broadcast address
When the host is is set to all 1s
94
What are subnet masks
This is a value that helps a computer to differentiate where a network is ends and a host address begins
95
What is the default gateway?
The door from your network to the outside world.
96
What happens if the destination is on a different network?
The router comes into play
97
List the 2 critical TCP/IP services.
DHCP
DNS
98
What does TCP/IP mean?
Transmission Control Protocol/ Internet Protocol
99
What does the DHCP service do?
1 - Assigns the IO address and subnet mask
2 - recognize the default gateway and DNS server address
100
What is the function of the DSN?
Takes the IP address when you enter a website and allows you to connect to it
101
What is the alternative to DHCP?
The administrator enters the IP address configuration info manually on each host. This is called static IP address.
102
What is the one function of the DNS?
To resolve host name to IP address
103
What configuration info does the DHCP server provide?
IP address
Subnet mask
Default gateway
DNS server address
104
What does APIPA stand for
Automatic Private IP Address
105
What is APIPA used for?
A TCP/IP standard used to configure IP base host automatically that are unable to reach the DHCP server
106
What is the IP address range used by the APIPA?
169.254.0.0
107
When you see 169 254.0.0 what is happening with the IP address?
It has configured itself and will not be able to get on to the internet.
108
If your IP address cannot get to the DHCP what will happen?
The DHCP will give you an APIPA
109
What are the commands used by Windows and Mac to show the configuration info of your computer?
Ipconfig
| Ifconfig -mac
110
What is the default gateway
The router
111
Is a subnet mask of 255.255.254.0 possible?
Yes
112
192.168.1.142
| Identify the network id and the host id
192.168.1 - network id
| 142 - host id
113
What command should be used at the command prompt to show more information including the address of your DHCP and DNS
ipconfig /all
114
What does"not routable on the network" means?
Will not work on the network.
115
What does the command tracery does?
Traces the router
116
What is the purpose of the NAT?
Converts private IP addresses to public addresses
117
Is the NAT a translator?
Yes
118
What are the 2 network storage options?
Local network storage
| Cloud storage
119
Give 2 local network storage types
File server
| NAS (network attached storage)
120
What is a file server?
Server specialized to store user files. It is a dedicated server.
121
What is like a personal cloud?
NAS
122
What is RAID?
Redundant Array of Independent Disk
123
Which device acts like it's own server?
NAS network attached storage
124
What is a file server?
A server that is specialized to store user files
125
What is like a personal cloud
NAS
126
What device has it's own operating system and acts like it's own file server
NAS
127
List the cloud providers
```
Dropbox
Box
Apple iCloud
Microsoft One Drive
Google Drive
```
128
Which of the cloud providers have more space?
Google Drive
129
Which of the cloud providers has the least space?
Dropbox
130
What are the steps to set up a wireless network
1 change the routers SSID
2 change the administrator username and password (for the router)
3 enable WPA2 personal with AES encryption
4 choose a high quality security pass phrase - to be used by guests
5 from the client side select WPA2 and enter the passphrase
131
Where would you find captive portal features
On open portals
132
Which is more secure
WEP
WPA
WPA 2
WPA 2
133
What does the QoS do?
Decides who gets to use what resource
134
What are the 3 types of storage?
File server
NAS
Cloud
135
What are the 5 key network protocol?
```
HTTP
HTTPS
POP3 used to retrieve emails
IMAP. ". """""""""""""
SMTP used to send emails
```
136
What is the wireless network service name?
SSID
137
What along with a router connects you to the network?
Access point
138
With an access point alone you cannot get into the internet true or false
True
139
What allows you to get out of the internet?
Proxy
140
What does the proxy do?
Allows you to get out of the intranet.
141
An employee is using a desk phone that is connected only via a network cable. Which of the following technologies is the phone using?
VOIP
142
What does a proxy do?
Allows you to get out of the Intranet
143
Can you go onto the internet with an Access Point only?
No
