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COMPTIA NETWORK+ CERTIFICATION (EXAM N10-007) 2024/2025
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COMPTIA NETWORK+ CERTIFICATION (EXAM N10-007) 2024/2025
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COMPTIA NETWORK+ CERTIFICATION(EXAM N10-007) 2024/2025
,COMPTIA NETWORK+ CERTIFICATION
(EXAM N10-007) 2024/2025
What does OSI stand for? - Precise Answer ✔✔Open Systems
Interconnection, which is a seven-layer network model
What does TCP/IP stand for? - Precise Answer ✔✔Transmission
Control Protocol/Internet Protocol
Name the 7 layers of the OSI model in order (# & name) - Precise
Answer ✔✔Layer 7 Application, Layer 6 Presentation, Layer 5 Session,
Layer 4 Transport, Layer 3 Network, Layer 2 Data Link, Layer 1
Physical
Bottom-up mnemonic: "Please Do Not Throw Sausage Pizza Away."
Top-down mnemonic: "All People Seem To Need Data Processing."
What is UTP? - Precise Answer ✔✔Unshielded Twisted Pair cable.
Usually contains four pairs of wires that can transmit and receive data
Define the Physical Layer of OSI - Precise Answer ✔✔Layer 1 of the
OSI model defines the method of moving data between computers, so
the cabling and central box are part of the Physical layer (Layer 1).
Anything that moves data from one system to another, such as copper
cabling, fiber optics, even radio waves, is part of the OSI Physical layer.
Layer 1 doesn't care what data goes through; it just moves the data from
, one system to another system. NOTE: The NIC is NOT considered part
of the Physical Layer, but usually is part of Layer 2 (Data Link).
What is a MAC address? - Precise Answer ✔✔Inside every NIC, burned
onto some type of ROM chip, is special firmware containing a unique
identifier with a 48-bit value called the media access control address, or
MAC address.
No two NICs ever share the same MAC address—ever. Any company
that makes NICs must contact the Institute of Electrical and Electronics
Engineers (IEEE) and request a block of MAC addresses, which the
company then burns into the ROMs on its NICs. Many NIC makers also
print the MAC address on the surface of each NIC.
Represented in hex, each hex being 4 bits, hence, 12 hex chars make up
the 48-bit MAC address value.
E.g. 00-40-05-60-7D-49
The first six digits, in this example 00-40-05, represent the number of
the NIC manufacturer. Once the IEEE issues those six hex digits to a
manufacturer—referred to as the Organizationally Unique Identifier
(OUI)—no other manufacturer may use them. The last six digits, in this
example 60-7D-49, are the manufacturer's unique serial number for that
NIC; this portion of the MAC is often referred to as the device ID.
What are 2 other ways to refer to the MAC address? - Precise Answer
✔✔Most techs just call them MAC addresses, as you should, but you
might see MAC-48 or EUI-48 on the CompTIA Network+ exam.
The Institute of Electrical and Electronics Engineers (IEEE) forms MAC
addresses from a numbering name space originally called MAC-48,
which simply means that the MAC address will be 48 bits, with the first
24 bits defining the OUI, just as described here. The current term for this
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