Term
| The use of ___ prevent any single machine from monopolizing the network's shared bus cable and makes the process of retransmitting lost data more efficient. (pg. 69) |
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Definition
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Term
| A 7-byte series of alternating ones and zeroes followed by a 1-byte start frame delimiter or an 8-byte series of ones and zeroes. Always proceeds a frame. (pg. 70) |
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Definition
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Term
| The ___ gives a receiving NIC time to realize a frame is coming and to know exactly where the frame starts. (pg. 70) |
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Definition
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Term
True or false:
In a bus network, all the connected computers could see all traffic. (pg. 70) |
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Definition
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Term
| The ___ in the frame enabled NICs to examine each frame and process only frames intended for them. The ___ in the frame enabled the recipient to respond accurately. (pg. 70) |
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Definition
| Destination address, source address |
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Term
| An Ethernet frame may carry one of several types of data. The ___ field helps the receiving computer interpret the frame contents at a very basic level. (pg. 70) |
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Definition
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Term
True or false:
The type field does not tell you if the frame carries higher-level data, such as an email message or Web page. (pg. 71) |
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Definition
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Term
| The part of the frame that carries whatever payload the frame carries. (pg. 71) |
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Definition
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Term
| Extra data that a sending NIC may add to an Ethernet frame to bring the data up to the minimum 64 bytes in size. (pg. 71) |
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Definition
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Term
| Break down the naming convention of an Ethernet cabling system like 10BASE-T. (pg. 72) |
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Definition
The number refers to the speed (10 = 10 Mbps)
The word refers to the signaling type ("Base" = baseband)
The letter refers to the cable type (T = twisted pair) |
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Term
| What is the difference between broadband and baseband? (pg. 72) |
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Definition
| Baseband means that the cable carries only one signal, while a broadband cable carries multiple signals or channels. |
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Term
True or False:
A 10BASE-T device that was connected to a hub can send and receive data simultaneously. (pg.74)
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Definition
| False, even though it has one pair of wires to send data and another to receive it |
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Term
| NICs that can only communicate in one direction at a time run in ___ mode. NICs that can send and receive at the same time run in ___ mode. (pg. 74) |
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Definition
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Term
| What is the correct color-coded scheme of wires for the TIA/EIA 568B standard? (pg. 75) |
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Definition
Orange/White, Orange, Green/White, Blue, Blue/White, Green, Brown/White, Brown
[image] |
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Term
What is the difference between between the 568A and 568B cabling standards? (pg. 76)
Hint: "GO" |
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Definition
| The green and orange pairs are swapped between them, where as the blue and brown pairs stay the same. 568A starts with green/white and green, while 568B starts with orange/white and orange. |
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Term
| The twisted pair cable connecting a computer to a hub in a 10BASE-T network couldn't exceed ___ meters in length, and the hub could connect no more than ___ computers. |
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Definition
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Term
| Earlier Ethernet networks used a system called ___ to determine which computer should use a shared cable at a given moment. Each node using the network examined the cable before sending a data frame. (pg. 79) |
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Definition
| Carrier-sense multiple access with collision detection (CSMA/CD) |
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Term
When two NICs on the same bus sent a frame at the same time, they'd detect a ___ and stop transmitting.
How did they decide which transmitted first? (pg. 80) |
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Definition
Collision
They would each generate a random number to determine how long to wait. The node with the lowest number would transmit first. |
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Term
| A ___ acted like a repeater to connect two networks while also filtering and forwarding traffic between those segments. (pg. 81) |
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Definition
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Term
True or false:
Switches never repeat all incoming frames to all connected nodes like a hub would. (pg. 82) |
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Definition
| False: a switch initially forwards all frames when first turned on, but then filter by MAC address once completing port mapping. |
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Term
| Which layer of the OSI model does a switch operate on? (pg. 83) |
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Definition
Layer 2, Data Link
A switch filters traffic on MAC addresses, and MAC addresses run at Layer 2. |
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Term
| The two methods for connecting switches on a network are via: (pg. 84) |
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Definition
| An uplink port or a crossover cable |
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Term
| An ___ enable you to connect two older switches using a straight-through cable. (pg. 84) |
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Definition
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Term
| The technical term for an uplink port and the auto-sensing features of ports in modern switches. (pg.84) |
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Definition
| Auto-medium-dependent interface crossover (MDI-X) |
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Term
| Why does there have to be two cabling standards for TIA/EIA (568A and 568B)? (pg. 84) |
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Definition
| Two standards allow the sending and receiving pairs of wires to be reversed within the same cable, allowing two switches on the same network to talk to each other. |
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Term
| What is the protocol designed to eliminate the problem of accidentally creating bridging/switching loops (the redundant connection of switches)? (pg. 85) |
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Definition
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Term
| Switches use Spanning Tree Protocol (STP) frames known as ___ to communicate with other switches and prevent bridge loops from happening. (pg. 85) |
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Definition
| Bridge protocol data units |
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