WGU Network and SecurityFoundations-C172
Application Layer(7th layer) Ans- Interacts with application programs that incorporate a communication
component such as your internet browser and email (provides user interface)
Bus Topology Ans- The computers share the media (coaxial cable) for data t...
WGU Network and Security-
Foundations-C172
Application Layer(7th layer) Ans- Interacts with application programs that incorporate a communication
component such as your internet browser and email (provides user interface)
Bus Topology Ans- The computers share the media (coaxial cable) for data transmission
CAT6 (category 6) Ans- Twisted-pair cables capable of carrying up to 1000Mbps (1 gigabit) of data up to
a length of 100 meters
Crossover Ans- Transmit and receive signal pairs are crossed to properly align the transmit signal on one
device with the receive signal on the other device
CSMA/CD Ans- Carrier sense multiple access with collision detection is the Ethernet LAN media-access
method (used to prevent collisions in wired Ethernet networks) Used in wireless networks for to reduce
collisions.
Data Link Layer (2nd layer) Ans- Layer of the OSI reference model that handles error recovery.flow
control (synchronization), and sequencing controls which terminals are sending and receiving. Media
access is controlled (MAC) by the Data Link Layer
Deterministic Ans- Access to the network is provided at fixed time intervals
Ethernet, Physical, Hardware, or Adapter Address Ans- Other names for MAC address
Firewall Protection Ans- Used to prevent unauthorized access to your network
Host Address/Number Ans- The portion of the IP address that defines the location of the networking
device connected to the network also called the hose address
,Hotspots Ans- A limited geographic area that provides wireless access for the public
Hub Ans- Broadcasts the data it receives to all devices connected to its ports... it is possible for network
devices to pick up a data intended for a different device... considered a multiport repeater. Is on the
Physical Layer (layer 1)
IANA Ans- The Internet Assigned Numbers Authority is the agency that assigns IP addresses to computer
networks
ICMP Ans- Internet Control Message Protocol (preform diagnostics, report errors, control the flow of
data in the network)
IEEE Ans- Institute of Electrical and Electronics Engineers, on of the major standard-setting bodies for
technological development
Intranet Ans- An internal network the provides file and resource sharing but it's not accessed from the
internet
IP Address Ans- Unique 32-bit address the identifies on which network the computer is located as well
as differentiate the computer from all other devices on the same network; they are logical addresses
and can be found using the ipconfig/all command
IP Internetwork Ans- A network that uses IP addressing for identifying devices connected to the network
ipconfig/all Ans- Enables the MAC address information to be displayed from the command prompt
ISP Ans- Internet service provider
Link Integrity Test Ans- Protocol used to verify that a communication link between two Ethernet devices
has been established.
Link Light Ans- Indicates that the transmit and receive pairs are properly aligned
,Link Pulses Ans- Sent by each of the connected devices via the twisted-pair cables when data is not
being transmitted to indicate that the link is still up
Local Area Network (LAN) Ans- Network of users that share computer resources in a limited area
MAC Address Ans- A unique 6-byte address assigned by the vendor of the network interface card; A
MAC address has two portions. The OUI is comprised of the first 6 digits and the last half is assigned by
the manufacturer.
Mbps Ans- Megabits per second
Mesh Topology Ans- All networking devices are directly connected to each other (fault tolerant; stations
can still communicate if some segments go down)
Multiport Repeater Ans- Another name for a hub
Network Address Translation (NAT) Ans- Translates the private IP address to a public address for routing
over the internet
Network Interface Card(NIC) Ans- The electronic hardware used to interface the computer to the
network
Network Layer (3rd layer) Ans- Defines how data packets are routed in a network. Accepts outgoing
messages and combines messages or segments into packets, adding a header that includes routing
information (provides a logical path for data)
Network Number Ans- The portion of the IP address that defines which network the IP packet is
originating from or being delivered to
Organizationally Unique Identifier (OUI) Ans- The first 3 bytes of the MAC address the identifies the
manufacturer of the network hardware (ex. Network interface card has MAC address of 00-00-86-15-7A,
the OUI is 00-00-86)
, OSI Ans- Open system interconnect
OSI Model Ans- The seven layers describing network funcations
overloading Ans- Where NAT translates the home network's private IP addresses to a single public IP
address
Packet Ans- Provides grouping of the information for transmission
Physical Layer (1st layer) Ans- Layer of the OSI reference model that provides the electrical and
mechanical connection to the network Describes the media that interconnects networking devices
Ping Ans- Command used to test that a device on the network is reachable (If you can't connect to a
networked computer, you can use the ping command to check connectivity) Used in windows in the
command window
Port address Translation (PAT) Ans- A port number is tracked with the client computer's private address
when translating to a public address
Ports Ans- The physical input/output interfaces to the networking hardware
Presentation Layer (6th layer) Ans- Layer of the OSI reference model that accepts and structures the
messages for the application
Private Addresses Ans- IP addresses set aside for use in private intranet
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
Protocol Ans- Set of rules established for users to exchange information
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