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Networks and Security Foundations D315 Exam Questions and Complete Solutions Graded A+
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Networks and Security Foundations D315 Exam Questions and Complete Solutions Graded A+
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Networks and SecurityFoundations D315 Exam
Questions and Complete
Solutions Graded A+
Network - Answer: A chain of communication that connects places. NOT THE INTERNET. Your home is its
own ____
Hub - Answer: Dumb, doesn't think, sits at physical layer of OSI model, Connects router to the network,
sends data packets to ALL connected devices.
Switch - Answer: Used to connect devices in a specific networks, Builds a MAC address tables and sends
accordingly. Is a more complex version of a Hub. Forwards data packets. Sits at Data Link Layer of the
OSI model.
Router - Answer: is a point of connection between two or more networks. Connects to other IP's.
Forwards data packets between networks. Sits at network layer of the OSI model.
Access Point - Answer: Used to interconnect wireless devices and provide a connection to the wired
LAN. Different than wireless router. Sits at data link layer of OSI model.
Protocol - Answer: Set of rules established for users to gain control of the network to exchange
information.
Topology - Answer: Is the network architecture used to interconnect the networking equipment.
3 common network topologies - Answer: Star Network, Ring Network, and Bus network are common
what?
, Bus Topology - Answer: Old, used when the internet wasn't around, uses a cable/backbone/Datalink
which is terminated on either end. Data packets travel with electric signals in 1 direction, called half
duplex. Basically first come first serve, easy to setup, doesn't cost alot.
Token Ring or Ring Topology - Answer: Was created to overcome 1st come first serve of bus topology.
Uncommon, setup for specific reasons, each device passes a token at a certain time. Continuous path,
loop, or ring.
Star Topology - Answer: Not actually in a star, Could be cat cables to a patch panel in an office connected
to a server room with a switch. All network devices are connected to hub or switch. The network devices
do not share data connections to/from the hub or switch. A hub broadcasts all data traffic to all
networking devices connected to its data ports. One downside is single point of failure if hub/switch
breaks.
Mesh topology - Answer: Overcomes star topology single point of failure. These are complicated and
expensive. The world wide web or internet is an example of this. Has redundant data paths. All network
devices are heavily interconnected. Can b e called Hub and Spoke.
Physical address - Answer: Another term for MAC address
logical address - Answer: another term for IP address
Layers of OSI Model - Answer: Layer 1 - Physical
Layer 2 - Data Link
Layer 3 - Network
Layer 4 - Transport
Layer 5 - Session
Layer 6 - Presentation
Layer 7 - Application
(All People Seem To Need Dominoes Pizza)
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