1 for specific request mail
CCNA Modules 1-3 Exam Practice Questions |
Accurate & Verified Answers to Pass Actual Exam
What does TCP stand for?
Ans: Transmission Control Protocol
What does IP stand for?
Ans: Internet Protocol
What does OSI stand for?
Assignment Expert
Ans: Open Systems Interconnection
What is step 1 of the encapsulation process?
Guru01 - Stuvia
Ans: Create application data and headers
What is step 2 of the encapsulation process?
Ans: Package data for transport
2026
What is step 3 of the encapsulation process?
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Ans: Add destination and source network address
What is step 4 of the encapsulation process?
Ans: Add destination and source data link address
What is step 5 of the encapsulation process?
Ans: Transmit the bits
What is the first layer of the OSI reference model?
Ans: Physical
What is the second layer of the OSI reference model?
Ans: Data Link
, 2 for specific request mail
What is the third layer of the OSI reference model?
Ans: Network
What is the fourth layer of the OSI reference model?
Ans: Transport
What is the fifth layer of the OSI reference model?
Ans: Session
What is the sixth layer of the OSI reference model?
Ans: Presentation
Assignment Expert
What is the seventh layer of the OSI reference model?
Guru01 - Stuvia
Ans: Application
What is the first layer of the TCP/IP reference model?
Ans: Network Interface
2026
What is the second layer of the TCP/IP reference model?
Ans: Internetwork
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What is the third layer of the TCP/IP reference model?
Ans: Transport
What is the fourth layer of the TCP/IP reference model?
Ans: Application
What is a L3PDU?
Ans: Layer 3 protocol data unit, which would be the layer 3 headers,
trailers, and all data encapsulated inside
What terms describe the contents of data encapsulated by the data link,
network, and transport layers, respectively?
Ans: Frame, packet, and segment
, 3 for specific request mail
What are the benefits of layering?
Ans: Easier to learn and develop, Multivendor Interoperability, Modular
Engineering
What header or trailer does a router discard as a side-effect of routing?
Ans: The data-link header and trailer
Which pins are used by an Ethernet NIC to send?
Ans: Pins 1 and 2
Which pins are used by an Ethernet NIC to receive?
Assignment Expert
Ans: Pins 3 and 6
Guru01 - Stuvia
What are the typical functions defined by physical layer protocols?
Ans: 1. Cabling (defines the number of wires and type of shielding) 2.
Connectors (Defines shape of connector and number of pins) 3. Pins
(Defines the purpose of pins) 4. Voltage and Current (Defines electrical
2026
characteristics of the endpoint devices) 5. Encoding (Defines how a
device signals a binary 1 or 0 onto the transmit pin)
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Why are the wires twisted into pairs in electrical cables?
Ans: Twisting pairs of wires reduces electromagnetic interference cause
by the electrical current.
What is attenuation?
Ans: Attenuation is the tendency of electical current to grow weaker the
farther it has to travel.
What are the typical functions defined by data link layer protocols?
Ans: . Arbitration (Determines when it is appropriate to use the physical
medium) 2. Addressing (Ensures that the correct recipient receives and
processes the data) 3. Error Detection (Determines whether the data made
the trip across the physical medium successfully) 4. Identification of the
CCNA Modules 1-3 Exam Practice Questions |
Accurate & Verified Answers to Pass Actual Exam
What does TCP stand for?
Ans: Transmission Control Protocol
What does IP stand for?
Ans: Internet Protocol
What does OSI stand for?
Assignment Expert
Ans: Open Systems Interconnection
What is step 1 of the encapsulation process?
Guru01 - Stuvia
Ans: Create application data and headers
What is step 2 of the encapsulation process?
Ans: Package data for transport
2026
What is step 3 of the encapsulation process?
©
Ans: Add destination and source network address
What is step 4 of the encapsulation process?
Ans: Add destination and source data link address
What is step 5 of the encapsulation process?
Ans: Transmit the bits
What is the first layer of the OSI reference model?
Ans: Physical
What is the second layer of the OSI reference model?
Ans: Data Link
, 2 for specific request mail
What is the third layer of the OSI reference model?
Ans: Network
What is the fourth layer of the OSI reference model?
Ans: Transport
What is the fifth layer of the OSI reference model?
Ans: Session
What is the sixth layer of the OSI reference model?
Ans: Presentation
Assignment Expert
What is the seventh layer of the OSI reference model?
Guru01 - Stuvia
Ans: Application
What is the first layer of the TCP/IP reference model?
Ans: Network Interface
2026
What is the second layer of the TCP/IP reference model?
Ans: Internetwork
©
What is the third layer of the TCP/IP reference model?
Ans: Transport
What is the fourth layer of the TCP/IP reference model?
Ans: Application
What is a L3PDU?
Ans: Layer 3 protocol data unit, which would be the layer 3 headers,
trailers, and all data encapsulated inside
What terms describe the contents of data encapsulated by the data link,
network, and transport layers, respectively?
Ans: Frame, packet, and segment
, 3 for specific request mail
What are the benefits of layering?
Ans: Easier to learn and develop, Multivendor Interoperability, Modular
Engineering
What header or trailer does a router discard as a side-effect of routing?
Ans: The data-link header and trailer
Which pins are used by an Ethernet NIC to send?
Ans: Pins 1 and 2
Which pins are used by an Ethernet NIC to receive?
Assignment Expert
Ans: Pins 3 and 6
Guru01 - Stuvia
What are the typical functions defined by physical layer protocols?
Ans: 1. Cabling (defines the number of wires and type of shielding) 2.
Connectors (Defines shape of connector and number of pins) 3. Pins
(Defines the purpose of pins) 4. Voltage and Current (Defines electrical
2026
characteristics of the endpoint devices) 5. Encoding (Defines how a
device signals a binary 1 or 0 onto the transmit pin)
©
Why are the wires twisted into pairs in electrical cables?
Ans: Twisting pairs of wires reduces electromagnetic interference cause
by the electrical current.
What is attenuation?
Ans: Attenuation is the tendency of electical current to grow weaker the
farther it has to travel.
What are the typical functions defined by data link layer protocols?
Ans: . Arbitration (Determines when it is appropriate to use the physical
medium) 2. Addressing (Ensures that the correct recipient receives and
processes the data) 3. Error Detection (Determines whether the data made
the trip across the physical medium successfully) 4. Identification of the
