Network Models
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| Two systems on the same network may share the same MAC address. T or F | False
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| In a wired network, a charge on a wire represents a zero while no charge represents a one. T or F | False
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| A NIC is not concerned about the contents of the data part of a frame. T or F | True
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| The network administrator assigns the divisor or the key used in a cyclic redundancy check. T or F | False
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| When a frame arrives at the hub, the hub makes an exact copy of the frame and sends it to every other system on the network. T or F | True
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| When the NIC sends a frame that contains the broadcast address, every NIC on the network processes that frame. T or F | True
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| A router allows you to connect networks with different types of cabling or frames. T or F | True
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| Routers use logical addresses as their unique identifiers. T or F | True
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| A network protocol is special software that allows a network to use logical addressing in order to move data from one subnet to another. T or F | True
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| How many layers does the OSI model contain? | 7
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| How long is a MAC address? | 12 hexadecimal characters
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| A MAC address is composed of which two parts? | the organizationally unique identifier and the unique device ID of the NIC
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| Which of the following is another name for a MAC address? | physical
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| NICs send and receive binary data as pulses of all of the following except ____. a. electricity b. radio waves c. gamma rays d. light | c. gamma rays
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| What must match in the communication between all NICs on a network? | MAC address
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| What is length of the typical frame? | 1500 bytes of data
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| What best describes what happens to frames when the hub sends them to the NICs on the network? | The frames are received by every NIC, but only the NIC with the matching MAC address
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| Where does the CRC come from in a network frame? | the sending NIC attaches it
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| What is a broadcast MAC address? | FF-FF-FF-FF-FF-FF
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| Routers have which of the following capabilities? | They allow you to connect networks with different types of cabling or frames.
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| Which statement best describes an IP address? | It is a unique dotted decimal number assigned to every network node
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| Which standards organization is named for the Greek word for "equal"? | ISO
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| Which layer of the OSI model manages the connections between machines on the network? | Data Link
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| When it receives data from the upper layers, which layer of the OSI model assembles the data into smaller pieces called packets? | Network
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| Which layer of the OSI model uses routers and IP addresses to ensure that packets arrive at the correct system? | Network
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| Which layer of the OSI model adds source and destination MAC addresses to frames? | Data Link
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| In some networks data moves over radio waves, which fall into which layer of the OSI model? | Physical
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| What best describes Logical Link Control? | It is a sublayer of the data link layer.
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| Anything that moves data from one system to another, such as cabling or radio waves, is part of this layer of the OSI model. | Layer 1
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| Which layer of the OSI model is the only layer divided into two sublayers? | Data Link
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| For a network tech, one benefit of understanding the OSI seven-layer model and how traffic in an actual network works through the model is applying this knowledge to ____ networks. | troubleshoot
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| What device do you need to split a large network into smaller ones? | router
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| How does the receiving station on a network use the CRC to verify that it received accurate data? | It uses the same divisor as the sending station to find the same remainder.
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| What is the network layer unique identifier assigned to each device on a TCP/IP network? | IP address
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| Routers function at which layer of the OSI model? | Network
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