Term
| How long is a MAC address? |
|
Definition
| 12 hexadecimal characters |
|
|
Term
| A MAC address is composed of which two parts? |
|
Definition
| The organizationally unique identifier and the unique device ID of the NIC |
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|
Term
| What must match in the communications between all NICs on a network? |
|
Definition
|
|
Term
| What is the length of the typical frame? |
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Definition
|
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Term
| What happens to frames when the hub sends them to the NICs on the network? |
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Definition
| The frames are recieved by every NIC, but only the NIC with the matching MAC address procces the frame |
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Term
| Where does the CRC come from in a network frame? |
|
Definition
| The sending NIC attaches it |
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Term
|
Definition
| A unique dotted decimal number assigned to every netwrk node |
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|
Term
| Which layer of the OSI model uses routers and IP addresses to ensure that packets arrive at the correct system? |
|
Definition
|
|
Term
| Which layer of the OSI model adds source and destination MAC addresses to frames? |
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Definition
|
|
Term
| In some networks, data moves over radio waves. Which layer of the OSI model does this fall into? |
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Definition
|
|
Term
| Describe Logical Link Control (LLC). |
|
Definition
| It is a sublayer of the Data Link layer |
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Term
| Anything that moves data from one system to another is part of what layer of the OSI model? |
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Definition
|
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Term
| Which layer of the OSI model is the only layer divided into two sublayers? |
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Definition
|
|
Term
| What device do you need to split a large network into smaller ones? |
|
Definition
|
|
Term
| How does the receiving system on a network use the CRC to verify that it recieved accurate data? |
|
Definition
| It uses the same divisor as the sending system to find the same remainder |
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|
Term
| What is the Network layer unique identifier assigned to each device on a TCP/IP network? |
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Definition
|
|
Term
| Routers function at which layer of the OSI model? |
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Definition
|
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Term
| What is the minimum category rating of UTP cabling you would need for a network that runs at 1000 Mbps? |
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Definition
|
|
Term
| What two topologies provide no fault tolerance? |
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Definition
|
|
Term
| What organization provides a variety of industry wide cabling standards, such as those for serial, parrallel, and FireWire? |
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Definition
|
|
Term
| What rating defines how much a cable resists the flow of electricity? |
|
Definition
|
|
Term
| Which cable type does NOT use copper wires? |
|
Definition
|
|
Term
| What type of fiber-optic cable uses lasers to send signals? |
|
Definition
|
|
Term
| What is the fastest category of UTP cabling? |
|
Definition
|
|
Term
| Which IEEE subcommittee sets the standards for Wireless Lan networks? |
|
Definition
|
|
Term
| How many cable fibers are normally required by almost all network technologies that use fiber-optic cable? |
|
Definition
|
|
Term
| Which kind of cable works best for long distance transmissions? |
|
Definition
|
|
Term
| Which kind of cable does not provide any protection against EMI? |
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Definition
|
|
Term
| What kind of cable is described as a central conductor wire, surrounded by insulating materials, placed inside a braided metal shield? |
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Definition
|
|
Term
| Which kind of cabling would you select when you need to cover distances that span kilometers? |
|
Definition
|
|
Term
| What is the only important measure of coax cabling? |
|
Definition
|
|
Term
| Which network topology offers the greatest level of fault tolerance? |
|
Definition
|
|
Term
| At what layer of the OSI model does network cabling belong? |
|
Definition
|
|
Term
| Which connector is used for UTP cabling on a network? |
|
Definition
|
|
Term
| What distance can a signal travel on a fiber-optic cable? |
|
Definition
|
|
Term
| What hybrid topology is the dominant wired network topology? |
|
Definition
|
|
Term
| Most network technologies that use fiber-optics use which type of fiber-optic cables? |
|
Definition
|
|
Term
| What does the term "capacitance" refer to? |
|
Definition
| Bandwidth the cable can support |
|
|
Term
| With a star-bus network, where is the single point of failure that will bring down the entire network? |
|
Definition
|
|
Term
| UTP category rating are based on what? |
|
Definition
| Highest frequency and bandwidth that the cable can handle |
|
|
Term
| What is the most common use of coaxial cable in networking today? |
|
Definition
| Connecting a cable modem to an Internet Service Provider (ISP) |
|
|
Term
| Which type of cabling does the 10BaseT standard specify? |
|
Definition
|
|
Term
| What is the minimum size of an Ethernet frame? |
|
Definition
|
|
Term
| What kind of cabling does the 10BaseFL standard specify? |
|
Definition
|
|
Term
| What does it mean if a NIC runs in promiscuous mode? |
|
Definition
|
|
Term
| Describe a preamble of an Ethernet frame. |
|
Definition
| It includes 64 bits of alternating ones and zeros that end with 11 to notify the receiving NIC that a frame is starting |
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|
Term
| What is the maximum speed at which 10BaseT Ethernet networks communicate? |
|
Definition
|
|
Term
| How many wires does the 10BaseT specification require in the cabling used? |
|
Definition
|
|
Term
| Which version of Ethernet was introduced in 1990? |
|
Definition
|
|
Term
| Which companie was not involved in the 1979 introduction of the DIX Ethernet? |
|
Definition
|
|
Term
| Describe the comparison of repeaters and bridges. |
|
Definition
| Repeaters retransmit all packets, while bridges examine the destination MAC address to determine which packets to forward onto the next segment |
|
|
Term
| What is the original maximum data transfer rate of the first Ethernet developed by Xerox? |
|
Definition
|
|
Term
| What is the meaning of the "10" in 10BaseT? |
|
Definition
|
|
Term
| What is an acceptable maximum collision rate on a properly running Ethernet network? |
|
Definition
|
|
Term
| When a collision occurs on a network relying on the CSMA/CD access method, what alerts the NICs? |
|
Definition
|
|
Term
| How many pins does an RJ-45 connector have? |
|
Definition
|
|
Term
| How many basic pieces of information does an Ethernet frame contain? |
|
Definition
|
|
Term
| What events, characteristic to an Ethernet network using hubs, does using an Ethernet switch minimize or avoid? |
|
Definition
|
|
Term
| What is the biggest differentiator among Ethernet hubs? |
|
Definition
|
|
Term
| Which Ethernet cabling standard defines an Ethernet network that uses CAT3 or better UTP cabling, operating at 10Mbps? |
|
Definition
|
|
Term
| What basis do bridges use to determine whether to forward traffic? |
|
Definition
|
|
Term
| What is the maximum number of nodes that can be attached to a 10BaseT segment or hub? |
|
Definition
|
|
Term
| How many pairs of pins in an RJ-45 connector does a 10BaseT device actually use? |
|
Definition
|
|
Term
| Which standard specifies multimode cabling? |
|
Definition
|
|
Term
| When a multispeed, auto-sensing 100BaseT NIC connects to a 10BaseT Ethernet hub, at what speed will the NIC function? |
|
Definition
| 10 Mbps sending and receiving |
|
|
Term
| Of all the 10-GbE standards described in the chapter, which one was most recently released? |
|
Definition
|
|
Term
| The "W" in the standard 10GBaseSW stands for which type of signaling? |
|
Definition
|
|
Term
| What term is used to refer to any of the several variations of Ethernet that operate at 100 Mbps? |
|
Definition
|
|
Term
| Of all the Gigabit Ethernet standards detailed in chapter 5, what maintains a signal over the greatest distance? |
|
Definition
|
|
Term
| What is the limit to the number of nodes in every version of Ethernet? |
|
Definition
|
|
Term
| What wavelength is used on 10GBaseLW fiber-optic cabling? |
|
Definition
|
|
Term
| Presently, where is 10-GbE equipment employed? |
|
Definition
| High-bandwidth LANs and WANs |
|
|
Term
| For a network to function in full-duplex, which devices must support full duplex? |
|
Definition
|
|
Term
| If you have a 100BaseT switched Ethernet network, what is the theoretical maximum bandwidth using full duplex NICs? |
|
Definition
|
|
Term
| Which versions of Gigabit Ethernet are published under the 802.3z standard? |
|
Definition
| 1000BaseCX ,1000BaseLX, 1000BaseSX |
|
|
Term
| What type of fiber-optic cable is used in a 1000BaseLX network? |
|
Definition
|
|
Term
| What is the solution manufactures devised to accomodate the need for switches to connect to a variety of 10-GbE connector types? |
|
Definition
| Multisource agreements (MSAs) |
|
|
Term
| Which version of Gigabit Ethernet uses a unique cable known as twinaxial? |
|
Definition
|
|
Term
| What type of fiber-optic cabling and connectors does a 100BaseFX network use? |
|
Definition
| Multimode with ST or SC connectors |
|
|
Term
| Which version of Gigabit Ethernet is published under the 802.3ab standard? |
|
Definition
|
|
Term
| What very high-speed fiber network was already in place before the IEEE developed the 10-GbE Ethernet standards? |
|
Definition
|
|
Term
| What version of Gigabit Ethernet is being positioned as the Ethernet backbone of the future? |
|
Definition
|
|
Term
| What is the maximum cable length for a 1000BaseT network? |
|
Definition
|
|
Term
| The specification for 100BaseTX calls for UTP cabling using ________ or better rated cabling. |
|
Definition
|
|
Term
| The "R" in the standard 10GBaseSR stands for which type of signaling? |
|
Definition
|
|
Term
| What protocol (including version number) was adopted in 1994, and is now considered obsolete except for small, private WANs? |
|
Definition
|
|
Term
Which of the following could be a valid Autonomous System Number (ASN)?
0.0.0.0
1.33457
192.168.30.1
255 |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Which type of NAT is the most popular? |
|
Definition
|
|
Term
| Who assigns Autonomous System Numbers (ASNs)? |
|
Definition
|
|
Term
| Some manufacturers, such as Cisco, use this term to refer to either overloaded NAT or port forwarding? |
|
Definition
| Port Address Translation (PAT) |
|
|
Term
| In a NAT router, what is the name for an arbitrary number generated by the sending computer? |
|
Definition
|
|
Term
| What is the name of the proprietary cable designed by Cisco for connecting to their routers? |
|
Definition
|
|
Term
| Local connections do not use this, although every routing table has a column for it an therefore, a value appears in this field for each route. |
|
Definition
|
|
Term
| On a TCP/IP network, what information within a packet does a router use to determine where an incoming packet should go? |
|
Definition
|
|
Term
| What is a valid Area ID? What would it look like? |
|
Definition
|
|
Term
| What is the maximum number of hops allowed by RIP? |
|
Definition
|
|
Term
| At which layer of the OSI model do routers work? |
|
Definition
|
|
Term
| An administrator managing many routers should be using this type of tool in order to have an overall view of all the routers. |
|
Definition
| Network Management System (NMS) |
|
|
Term
| What is the protocol developed by Cisco for enterprise-wide routing environments? |
|
Definition
|
|
Term
| What is the term used for the passage of a packet through a router? |
|
Definition
|
|
Term
| What is the range of numbers normally used for ephemeral ports? |
|
Definition
|
|
Term
| Routers using the OSPF protocol are organized into these groups |
|
Definition
|
|
Term
| What is the one protocol used on the Internet for communication between Autonomous Systems? |
|
Definition
| Border Gateway Protocol (BGP-4) |
|
|
Term
| What are the link state dynamic routing protocols? |
|
Definition
| Open Shortest Path First (OSPF) and IS-IS |
|
|
Term
| With this type of NAT, many computers can share a pool of routable IP addresses that number fewer than the computers. |
|
Definition
|
|
Term
Which of the following is not a distance vector protocol?
OSPF
RIPv1
RIPv2
BGP |
|
Definition
|
|
Term
| When a NAT router uses the ________ in conjunction with IP addresses, it solves the two problems of security and limited IP addresses. |
|
Definition
|
|
