Term
| A ___ is used to divide larger networks into smaller sections by sitting between two physical network segments and managing the flow of data between the two. |
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Definition
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Term
| By looking at the ___ ___ of the devices connected to each segment, bridges can elect to forward the data (if the destination address is on another interface) or block it (if it is on the same interface). |
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Definition
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Term
| A ___ can be used to connect two physical LANs into a larger logical LAN. |
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Definition
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Term
| Almost all bridges can build a list of the MAC addresses on an interface by watching the traffic on the network. Such devices are called ___ bridges because of this functionality. |
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Definition
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Term
| The last 64 bits of a ___ address are known as EUI-64 (Extended Unique Identifier, 64-bit) and are derived from the MAC address. |
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Definition
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Term
| ___ ___ determines how bridges should be positioned in the network. The 80/20 rule dictates that 80% of the data should be local and the other 20% should be destined for devices on the other side of the bridge. |
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Definition
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Term
A ___ ___ can occur when more than
one bridge is implemented on the network and the bridges confuse each other by leading one another to believe that a device is located on a certain segment when it is not. |
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Definition
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Term
| The ___ ___ Protocol is used to solve the bridging loop problem. |
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Definition
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Term
| A ___ bridge does nothing but block or forward data based on the MAC address. The devices on the network are unaware of its existence. |
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Definition
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Term
| Used in token ring networks, the ___ ___ bridge derives its name from the fact that the entire path the packet is to take through the network is embedded in the packet. |
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Definition
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Term
| A ___ bridge is used to convert one networking data format to another, such as from token ring to Ethernet and vice versa. |
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Definition
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Term
| The ethernet ___ is used more often than a than bridge. |
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Definition
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Term
A bridge works at Layer __ of the OSI
model. |
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Definition
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Term
| The easiest way to assign TCP/IP information to client systems is to use a ___ ___ ___ ___ server. |
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Definition
| Dynamic Host Configuration Protocol (DHCP) |
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Term
| A ___ is a networking device, either hardware- or software-based, that controls access to the network. |
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Definition
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Term
| Software firewalls are implemented on a ___ ___ system such as Linux/UNIX and Windows servers. |
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Definition
| network operating system (NOS) |
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Term
| ___ firewalls are often dedicated network devices that can be implemented with little configuration. |
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Definition
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Term
| A ___ can protect internal networks from public networks and control access between specific network segments. |
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Definition
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Term
| A ___ is a simple device that directs data packets to all devices connected to it, regardless of whether the data package is destined for the device. |
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Definition
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Term
| Hubs are used in networks where ___-___ cabling is used to connect devices. |
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Definition
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Term
True or False?
Switches are inefficient devices
and can create bottlenecks on busy networks. |
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Definition
False
Hubs are inefficient and create bottlenecks. |
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Term
| A hub that does nothing except provide a pathway for electrical signals to travel along is called a ___ hub. |
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Definition
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Term
In addition to providing a path for the
data signals, an ___ hub regenerates the signal before it forwards it to all the connected devices. |
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Definition
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Term
True or False?
An active hub can buffer data before forwarding |
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Definition
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Term
True or False?
A hub can perform processing and/or error checking on the data it forwards. |
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Definition
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Term
| Small hubs with five or eight connection ports are commonly called ___ hubs. |
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Definition
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Term
| Hubs that can accommodate larger numbers of devices (normally up to 32) are called ___-___ devices. |
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Definition
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Term
| A Network ___ ___ is used to interconnect different types of cables within an existing network. |
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Definition
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Term
True or False?
A network media converter can be designed to work with any network type, including Ethernet, Fast Ethernet, Gigabit Ethernet, Asynchronous Transfer Mode (ATM), Fiber Distributed Data Interface (FDDI), and token ring. |
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Definition
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Term
True or False?
Media converters enable you to use existing infrastructure while keeping pace with changing technologies. |
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Definition
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Term
| A ___ is a device that converts the digital signals generated by a computer into analog signals that can travel over conventional phone lines. |
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Definition
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Term
| A modem can be used to connect to an ___ or to dial up a ___. |
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Definition
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Term
| A ___ ___ is a device that enables a computer to connect to the network. |
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Definition
| network card, also called a network interface card (NIC) |
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Term
| If the network interface you are installing is an internal device, ___ compatibility must be verified. |
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Definition
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Term
| The most common bus device is the ___ ___ ___ ___ card. |
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Definition
| Peripheral Component Interconnect Express (PCIe) |
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Term
| Network cards, like other devices, need ___ ___ and ___ ___ addresses. |
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Definition
Interrupt Request (IRQ)
memory I/O |
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Term
| On a network interface, a ___ light LED indicates whether a network connection exists. |
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Definition
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Term
| On a network interface, the ___ light LED indicates network activity. The light should flicker sporadically and often. Constant flickering might indicate a busy network or a problem somewhere on the network. |
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Definition
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Term
| On a network interface, a ___ light LED indicates that the interface is connected at a certain speed. |
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Definition
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Term
| Some network cards combine the functions of certain lights by using ___-___ LEDs. |
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Definition
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Term
True or False?
ExpressCards sometimes have no lights, or the lights are incorporated into the media adapter that comes with the card. |
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Definition
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Term
| Like hubs, ___ are the connectivity points of an Ethernet network. |
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Definition
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Term
| Devices connect to switches via ___-___ cabling, one cable for each device. |
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Definition
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Term
| The difference between hubs and switches is in how the devices deal with the ___ they receive. |
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Definition
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Term
| A hub forwards the data it receives to all the ___ on the device. |
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Definition
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Term
| A switch forwards data to only the port that connects to the destination device. It does this by learning the ___ address of the devices attached to it and then matching the destination address in the data it receives. |
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Definition
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Term
| By creating a direct path between two devices and controlling their communication, a switch can greatly reduce ___ on a network and therefore the number of ___. |
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Definition
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Term
| The lack of collisions enables switches to communicate with devices in ___-___ mode. |
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Definition
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Term
| In a ___-___ switching environment, the packet begins to be forwarded as soon as it is received. |
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Definition
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Term
| The cut-through switching method is fast, but it creates the possibility of errors being propagated through the network because no ___ ___ occurs. |
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Definition
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Term
| In a __-and-___ switching environment, the entire packet is received and error-checked before being forwarded. |
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Definition
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Term
True or False?
A store-and-forward switching environment is equally fast as a cut-through switching environment. |
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Definition
False
The error-checking process takes a relatively long time, and store-and-forward switching is considerably slower as a result. |
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Term
To take advantage of the error checking of store-and-forward switching, but still offer performance levels near
cut-through switching, ___ switching can be used. |
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Definition
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Term
| In a FragmentFree-switching environment, enough of the packet is read for the switch to determine if the packet has been involved in a ___. As soon as the status is determined, the packet is forwarded. |
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Definition
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Term
| In addition to acting as a connection point for network devices, a ___ or ___ can be connected to create larger networks. This connection can be done through standard ports with a special cable or by using special ports with a standard cable. |
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Definition
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Term
| The ports on a hub to which computer systems are attached are called ___-___ ___ ___. Two of the wires are crossed so the send signal wire on one device becomes the receive signal of the other. |
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Definition
| Medium-Dependent Interface Crossed (MDI-X) |
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Term
| Because the ports on a Medium-Dependent Interface Crossed (MDI-X) hub are crossed internally, a standard or ___-___ cable can be used to connect devices. |
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Definition
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Term
| A ___-___ Interface port is often included on a hub or switch to facilitate the connection of two switches or hubs. Because the hubs or switches are designed to see each other as simply an extension of the network, there is no need for the signal to be crossed. |
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Definition
| Medium-Dependent Interface (MDI) |
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Term
| If a hub or switch does not have an MDI port, hubs or switches can be connected by using a ___ cable between two MDI-X ports. |
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Definition
crossover
The crossover cable uncrosses the internal crossing. |
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Term
| In a ___ cable, wires 1 and 3 and wires 2 and 6 are crossed. |
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Definition
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Term
| A ___ ___ ___ uses a transmitter and receiver (transceiver) to create a wireless LAN (WLAN). |
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Definition
| Wireless access point (AP) |
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Term
| Access Points use the ___ ___ network mode to provide a connection point between WLANs and a wired Ethernet LAN. |
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Definition
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Term
| Access Points typically have several ___s, enabling expansion of the network to support additional clients. |
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Definition
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Term
| Additional APs are used to allow access to more wireless ___s and expand the ___ of the wireless network. |
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Definition
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Term
| A ___ range is the distance a client can be from an AP and still obtain a usable signal. |
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Definition
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Term
| An AP can operate as a ___ connecting a standard wired network to wireless devices or as a ___ passing data transmissions from one access point to another. |
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Definition
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Term
True or False?
By using an Access Point, systems can be added to or removed from the network with no effect on other systems on the network. |
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Definition
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Term
| Many Access Points provide ___ service and ___ capabilities. They give clients a private IP address and then prevent Internet traffic from accessing those systems. |
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Definition
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Term
| In effect, an ___ ___ is a switch, DHCP server, router, and firewall. |
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Definition
|
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Term
| A ___ ___ is any device capable of encrypting data for the purpose of making it more difficult to intercept. |
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Definition
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