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10 Cards in this Set
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- Back
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OSI Reference Model and Layered Communication:
How many bits, bytes and hex characters is the hardware address? |
48 bits
6 bytes 12 hex characters |
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OSI Reference Model and Layered Communication:
What does OUI stand for? |
Organizationally Unique Identifier
(the first 3 bytes of the hardware address for the vendor/manufacturer of the NIC) |
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OSI Reference Model and Layered Communication:
What do the last 3 bytes in the hardware address signify? |
The serial number.
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OSI Reference Model and Layered Communication:
What takes place when a NIC initializes? |
The hardware address burned in
ROM is copied into RAM. |
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OSI Reference Model and Layered Communication:
What is flow control? |
Layer 2 communication.
Used to manage how many frames are sent to the receiving device to ensure it is not overwhelmed. |
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OSI Reference Model and Layered Communication:
What is Cisco's definition of the data link layer? |
DLL provides reliable transit of data across a physical network link.
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OSI Reference Model and Layered Communication:
What is IP and IPX? |
IP addressing (logical) is 32 bits (4 bytes)
IPX addressing is 80 bits (10 bytes) - 4 bytes for IP address and 6 bytes for hardware address. |
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OSI Reference Model and Layered Communication:
What is the difference between MAC and Network-layer addresses? |
MAC addresses are assigned to a physical device's interface.
Network addresses are assigned by a protocol running on the device. |
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OSI Reference Model and Layered Communication:
What are the two sub-layers defined by the IEEE for L2? |
1. LLC (Logical Link Control)
2. MAC (Media Access Control) |
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OSI Reference Model and Layered Communication:
Describe ARP. |
Address Resolution Protocol.
1. Sending device transmits an ARP request (Who is this IP?) for the physical address of either the gateway device (outside of LAN) or destination device on the LAN. |
