SBOLC NETWORK+ // NETWORK
ESSENTIALS 3.15.2018 Exam 100%
Correct!!
Workstations - ANSWERSWorkstations are often seriously powerful computers that run
more than one central processing unit (CPU) and whose resources are available to
other users on the network to access when needed.
Client Machine - ANSWERSA client machine is any device on the network that can ask
for access to resources from a server or powerful workstation—that for instance, hosts a
printer.
Servers - ANSWERSServers are also powerful computers. They get their name
because they truly are "at the service" of the network and run specialized software for
the network's maintenance and
control known as the network operating system.
File server Stores and dispenses files
Mail server The network's post office; handles email functions
Print server Manages printers on the network
Web server Manages web-based activities by running Hypertext Transfer Protocol
(HTTP) for storing web content and accessing web pages
Fax server The "memo maker" that sends and receives paperless faxes over the
network
Application server Manages network applications
Telephony server Handles the call center and call routing and can be thought of as a
sophisticated network answering machine
Remote access server Provides remote users with access to the network through
modems
and an IP connection
Proxy server Handles tasks in the place of other machines on the network
Host - ANSWERSThe scope of possible machines and devices is so broad because, in
TCP/IP-speak, host means any network device with an IP address.
,All computers connected to a network that participate directly in network communication
are classified as hosts.
Wide Area Network (WAN) - ANSWERS
Local Area Network (LAN) - ANSWERSA local area network (LAN) is usually restricted
to spanning a particular geographic location such as an office building, a single
department within a corporate office, or even a home office.
IPv4 address - ANSWERSThe IPv4 address is a logical network address that identifies
a particular host. It is unique within the LAN.
Every packet sent across the Internet has a source and destination IPv4 address
An IPv4 address is simply a series of 32 binary bits (ones and zeros).
32 bits are grouped into four 8-bit bytes called octets
192.168.1.5
11000000.10101000.00000001.00000101.
(<Network><Subnet.Mask><Host>)
We have to set up the IP address
Network Interface Card (NIC) - ANSWERSAn IPv4 address is assigned to the Network
interface connection for a host. This connection is usually a network interface card (NIC)
installed in the device. Examples of end-user devices with network interfaces include
workstations, servers, network printers and IP phones. Some servers can have more
than one NIC and each of these has its own IPv4 address.
Default Gateway - ANSWERSA default gateway serves as an access point or IP router
that a networked computer uses to send information to a computer in another network
or the internet. Default simply means that this gateway is used by default, unless an
application specifies another gateway.
This identifies the networking device that the host uses to access the Internet or another
remote network.
Either the first or last assignable address on the net.
How to find your IP Address - ANSWERSOpen the Command Prompt, type ipconfig.
Look for
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . : netacad.gordon.army.mil
Link-local IPv6 Address . . . . . : fe80::11c8:8a4:73f8:f00c%12
, IPv4 Address. . . . . . . . . . . : 192.168.127.113
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.127.1
172.16.0.0/12 - ANSWERSIPv4 Private Network Address
169.254.0.0/16 - ANSWERSIPv4 Link-Local Address
fe80 - ANSWERSLink local IPv6 version header
What are the three IPv4 ranges? - ANSWERS24-bit block = 10.0.0.0 - 10.255.255.255 =
Single Class A
20-bit block = 172.16.0.0 - 172.31.255.255 = Contiguous range of 16 Class B blocks
16-bit block = 192.168.0.0 - 192.168.255.255 = Contiguous range of 256 Class C
Blocks
End Device - ANSWERSA source or destination device in a networked system. For
example, a user's PC is an end device, and so is a server. Network switches, routers
and other equipment work in between to enable messages to travel from one end
device to the other.
Public Address vs. Private Address - ANSWERSA network's public IP address is issued
by your ISP, your router issues private (or internal) IP addresses to each network device
inside your network. This provides unique identification for devices that are within your
home network, such as your computer,
Public address can move over internet, private addresses cannot. You can't have
private addresses in public domains (something would be broken)
Port Number - ANSWERSExample: 192.168.127.113/PORT NUMBER (Unique user)
(<Network><Subnet.Mask><Host>/<Port.Number>)
Every end device knows a port number.
Network Address Translation (NAT) - ANSWERSNetwork address translation (NAT) is a
method of remapping one IP address space into another by modifying network address
information in IP header of packets while they are in transit across a traffic routing
device.
Static NAT
Dynamic NAT
Port Address Translation (PAT) - ANSWERSAllows users to have a single public
address, and everyone can transmit, individuals will have the same address but
individual port number.
Example: 192.168.127.113/PORT NUMBER (Unique user)
ESSENTIALS 3.15.2018 Exam 100%
Correct!!
Workstations - ANSWERSWorkstations are often seriously powerful computers that run
more than one central processing unit (CPU) and whose resources are available to
other users on the network to access when needed.
Client Machine - ANSWERSA client machine is any device on the network that can ask
for access to resources from a server or powerful workstation—that for instance, hosts a
printer.
Servers - ANSWERSServers are also powerful computers. They get their name
because they truly are "at the service" of the network and run specialized software for
the network's maintenance and
control known as the network operating system.
File server Stores and dispenses files
Mail server The network's post office; handles email functions
Print server Manages printers on the network
Web server Manages web-based activities by running Hypertext Transfer Protocol
(HTTP) for storing web content and accessing web pages
Fax server The "memo maker" that sends and receives paperless faxes over the
network
Application server Manages network applications
Telephony server Handles the call center and call routing and can be thought of as a
sophisticated network answering machine
Remote access server Provides remote users with access to the network through
modems
and an IP connection
Proxy server Handles tasks in the place of other machines on the network
Host - ANSWERSThe scope of possible machines and devices is so broad because, in
TCP/IP-speak, host means any network device with an IP address.
,All computers connected to a network that participate directly in network communication
are classified as hosts.
Wide Area Network (WAN) - ANSWERS
Local Area Network (LAN) - ANSWERSA local area network (LAN) is usually restricted
to spanning a particular geographic location such as an office building, a single
department within a corporate office, or even a home office.
IPv4 address - ANSWERSThe IPv4 address is a logical network address that identifies
a particular host. It is unique within the LAN.
Every packet sent across the Internet has a source and destination IPv4 address
An IPv4 address is simply a series of 32 binary bits (ones and zeros).
32 bits are grouped into four 8-bit bytes called octets
192.168.1.5
11000000.10101000.00000001.00000101.
(<Network><Subnet.Mask><Host>)
We have to set up the IP address
Network Interface Card (NIC) - ANSWERSAn IPv4 address is assigned to the Network
interface connection for a host. This connection is usually a network interface card (NIC)
installed in the device. Examples of end-user devices with network interfaces include
workstations, servers, network printers and IP phones. Some servers can have more
than one NIC and each of these has its own IPv4 address.
Default Gateway - ANSWERSA default gateway serves as an access point or IP router
that a networked computer uses to send information to a computer in another network
or the internet. Default simply means that this gateway is used by default, unless an
application specifies another gateway.
This identifies the networking device that the host uses to access the Internet or another
remote network.
Either the first or last assignable address on the net.
How to find your IP Address - ANSWERSOpen the Command Prompt, type ipconfig.
Look for
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . : netacad.gordon.army.mil
Link-local IPv6 Address . . . . . : fe80::11c8:8a4:73f8:f00c%12
, IPv4 Address. . . . . . . . . . . : 192.168.127.113
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.127.1
172.16.0.0/12 - ANSWERSIPv4 Private Network Address
169.254.0.0/16 - ANSWERSIPv4 Link-Local Address
fe80 - ANSWERSLink local IPv6 version header
What are the three IPv4 ranges? - ANSWERS24-bit block = 10.0.0.0 - 10.255.255.255 =
Single Class A
20-bit block = 172.16.0.0 - 172.31.255.255 = Contiguous range of 16 Class B blocks
16-bit block = 192.168.0.0 - 192.168.255.255 = Contiguous range of 256 Class C
Blocks
End Device - ANSWERSA source or destination device in a networked system. For
example, a user's PC is an end device, and so is a server. Network switches, routers
and other equipment work in between to enable messages to travel from one end
device to the other.
Public Address vs. Private Address - ANSWERSA network's public IP address is issued
by your ISP, your router issues private (or internal) IP addresses to each network device
inside your network. This provides unique identification for devices that are within your
home network, such as your computer,
Public address can move over internet, private addresses cannot. You can't have
private addresses in public domains (something would be broken)
Port Number - ANSWERSExample: 192.168.127.113/PORT NUMBER (Unique user)
(<Network><Subnet.Mask><Host>/<Port.Number>)
Every end device knows a port number.
Network Address Translation (NAT) - ANSWERSNetwork address translation (NAT) is a
method of remapping one IP address space into another by modifying network address
information in IP header of packets while they are in transit across a traffic routing
device.
Static NAT
Dynamic NAT
Port Address Translation (PAT) - ANSWERSAllows users to have a single public
address, and everyone can transmit, individuals will have the same address but
individual port number.
Example: 192.168.127.113/PORT NUMBER (Unique user)
