NET+ N10-008 STUDY GUIDE 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◉ What does OSI stand for?. Answer: Open Systems Interconnection
◉ Layer 1 - Physical. Answer: The physics of the network, cables,
connectors, signaling, etc
◉ Layer 2 - Data Link Layer. Answer: handles how data moves in and
out of a physical link in a network
◉ Layer 3 - Network Layer. Answer: dedicated to routing and
switching information to different networks. UOM= Packets
◉ Layer 4 - Transport Layer. Answer: Describes how data is being
delivered and where it is being delivered into a system. Uses TCP,
UDP
◉ Layer 5 - Session layer. Answer: • Communication management
between devices
- Start, stop, restart
• Half-duplex, full-duplex
• Control protocols, tunneling protocols
,◉ Layer 6 - Presentation Layer. Answer: Takes the data and puts it
into a form we can understand
- encoding of characters, encryption of app data will occur at this
level
◉ Layer 7 - Application Layer. Answer: layer we see, HTTP, FTP, DNS,
POP3
◉ PDU (protocol data unit). Answer: A unit of data at any layer of the
OSI model.
◉ Encapsulation and Decapsulation. Answer:
◉ TCP Flag. Answer: The six flags in a TCP header are switches that
can be set to on or off to indicate the status of a port or service.
◉ MTU (maximum transmission unit). Answer: The largest IP packet
size in bytes allowable by routers in a path without fragmentation
and excluding the frame size.
◉ Network Topologies. Answer: represents a network's physical
layout, including the arrangement of computers and cables
,◉ Star topology. Answer: A topology with one central node that has
each computer or network device attached to the central node. All
data first goes into the central node and then is sent out to its
destination. (Think of it like a bicycle wheel with spokes.)
◉ Ring topology. Answer: A LAN configuration in which all nodes are
connected in a closed loop
◉ Bus topology. Answer: Network configuration wherein all
computers connect to the network via a central bus cable.
◉ Mesh topology. Answer: every node is connected to every other
node
◉ Hybrid network. Answer: network made up of a combination of
other network topologies
◉ Wireless topologies. Answer: • Infrastructure
- All devices communicate through
an access point
- The most common wireless
communication mode
, ◉ peer-to-peer network. Answer: No central server, each device is a
server and a client and communicate with each other to gain access
to the data they might need
◉ Client-server. Answer: Network system that uses servers to store
data centrally and client computers to access them.
◉ LAN. Answer: Local Area Network; a geographic network that
covers a relatively small geographic area such as a building or a
small campus - no more than a mile distance between computers
◉ MAN. Answer: Metropolitan Area Network; a network that covers
a larger geographic area such as a city or community
◉ WAN. Answer: Wide Area Network; largest type of network in
terms of geographic area; largest WAN is the Internet
◉ WLAN. Answer: Wireless local area network. Network connected
wirelessly locally.
◉ PAN. Answer: Personal Area Network, your own private network,
bluetooth, NFC
WITH SOLUTIONS GRADED A+
◉ What does OSI stand for?. Answer: Open Systems Interconnection
◉ Layer 1 - Physical. Answer: The physics of the network, cables,
connectors, signaling, etc
◉ Layer 2 - Data Link Layer. Answer: handles how data moves in and
out of a physical link in a network
◉ Layer 3 - Network Layer. Answer: dedicated to routing and
switching information to different networks. UOM= Packets
◉ Layer 4 - Transport Layer. Answer: Describes how data is being
delivered and where it is being delivered into a system. Uses TCP,
UDP
◉ Layer 5 - Session layer. Answer: • Communication management
between devices
- Start, stop, restart
• Half-duplex, full-duplex
• Control protocols, tunneling protocols
,◉ Layer 6 - Presentation Layer. Answer: Takes the data and puts it
into a form we can understand
- encoding of characters, encryption of app data will occur at this
level
◉ Layer 7 - Application Layer. Answer: layer we see, HTTP, FTP, DNS,
POP3
◉ PDU (protocol data unit). Answer: A unit of data at any layer of the
OSI model.
◉ Encapsulation and Decapsulation. Answer:
◉ TCP Flag. Answer: The six flags in a TCP header are switches that
can be set to on or off to indicate the status of a port or service.
◉ MTU (maximum transmission unit). Answer: The largest IP packet
size in bytes allowable by routers in a path without fragmentation
and excluding the frame size.
◉ Network Topologies. Answer: represents a network's physical
layout, including the arrangement of computers and cables
,◉ Star topology. Answer: A topology with one central node that has
each computer or network device attached to the central node. All
data first goes into the central node and then is sent out to its
destination. (Think of it like a bicycle wheel with spokes.)
◉ Ring topology. Answer: A LAN configuration in which all nodes are
connected in a closed loop
◉ Bus topology. Answer: Network configuration wherein all
computers connect to the network via a central bus cable.
◉ Mesh topology. Answer: every node is connected to every other
node
◉ Hybrid network. Answer: network made up of a combination of
other network topologies
◉ Wireless topologies. Answer: • Infrastructure
- All devices communicate through
an access point
- The most common wireless
communication mode
, ◉ peer-to-peer network. Answer: No central server, each device is a
server and a client and communicate with each other to gain access
to the data they might need
◉ Client-server. Answer: Network system that uses servers to store
data centrally and client computers to access them.
◉ LAN. Answer: Local Area Network; a geographic network that
covers a relatively small geographic area such as a building or a
small campus - no more than a mile distance between computers
◉ MAN. Answer: Metropolitan Area Network; a network that covers
a larger geographic area such as a city or community
◉ WAN. Answer: Wide Area Network; largest type of network in
terms of geographic area; largest WAN is the Internet
◉ WLAN. Answer: Wireless local area network. Network connected
wirelessly locally.
◉ PAN. Answer: Personal Area Network, your own private network,
bluetooth, NFC
