©JASONMcCONNELL 2025 ALL RIGHTS RESERVED
CompTIA Network+ Certification (Exam
N10-007) Exam Questions and Answers
100% Pass
What does OSI stand for? - Answer✔Open Systems Interconnection, which is a seven-layer
network model
What does TCP/IP stand for? - Answer✔Transmission Control Protocol/Internet Protocol
Name the 7 layers of the OSI model in order (# & name) - 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? - Answer✔Unshielded Twisted Pair cable. Usually contains four pairs of wires that
can transmit and receive data
Define the Physical Layer of OSI - 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).
1
, ©JASONMcCONNELL 2025 ALL RIGHTS RESERVED
What is a MAC address? - 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? - 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 numbering name space is EUI-48. EUI stands for Extended Unique Identifier.
How do NICs read computer data? - Answer✔NICs send and receive the computer's binary data
as pulses of electricity, light, or radio waves. The NICs that use electricity to send and receive
data are the most common, so let's consider that type of NIC.
Just think of a charge on the wire as a one and no charge as a zero.
How does the network get the right data to the right system? - Answer✔All networks transmit
data by breaking whatever is moving across the Physical layer (files, print jobs, Web pages, and
so forth) into discrete chunks called frames.
2
CompTIA Network+ Certification (Exam
N10-007) Exam Questions and Answers
100% Pass
What does OSI stand for? - Answer✔Open Systems Interconnection, which is a seven-layer
network model
What does TCP/IP stand for? - Answer✔Transmission Control Protocol/Internet Protocol
Name the 7 layers of the OSI model in order (# & name) - 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? - Answer✔Unshielded Twisted Pair cable. Usually contains four pairs of wires that
can transmit and receive data
Define the Physical Layer of OSI - 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).
1
, ©JASONMcCONNELL 2025 ALL RIGHTS RESERVED
What is a MAC address? - 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? - 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 numbering name space is EUI-48. EUI stands for Extended Unique Identifier.
How do NICs read computer data? - Answer✔NICs send and receive the computer's binary data
as pulses of electricity, light, or radio waves. The NICs that use electricity to send and receive
data are the most common, so let's consider that type of NIC.
Just think of a charge on the wire as a one and no charge as a zero.
How does the network get the right data to the right system? - Answer✔All networks transmit
data by breaking whatever is moving across the Physical layer (files, print jobs, Web pages, and
so forth) into discrete chunks called frames.
2
