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Network Devices
| Question | Answer |
|---|---|
| Modem | converts digital data to analog signals for transmission over an analog medium |
| Network Media | converters connect various types of cables that exist within a network. |
| Switches forward frames based on the | MAC address |
| The switching technique that checks the first 64 bytes of a frame for fragmentation before forwarding the frame is called? | Fragment free |
| What is the Store and Forward technique? | The switching technique that stores the frame and performs an error check. |
| When a data packet comes I on one of the lines, the router reads the ___ information in the packet to determine its ultimate destination. | IP Address |
| Which devices are able to perform a dynamic load balance of communications traffic when alternative routes are available between networks? | Routers |
| A ___ acts as a translator between two computers or networks that use different operating systems, communications protocols, data format structures, or network hardware architecture. | Gateway |
| A ___ is an internetworking system capable of joining together two networks that use different base protocols. | Network gateway |
| Which gateway type passes traffic from one network to another network? | Default Gateway |
| Which gateway type incorporates advance security features that allow for defense against phishing attacks and malware? | E-mail gateway |
| In digital transmissions, ___ is a method of sending more bits per second, than narrowband. | Wideband communication |
| ___ is defined as the simultaneous encryption of all channels of a multichannel telecommunications link. | BULK encryption |
| Network encryption applies ___ all the network transfer layer and the data is only encrypted while in transit. | Crypto services |
| Twisted-pair cable, and/or fiber optic cable are examples of? | Guided/bound media |
| The two types of twisted pair cable are ___ and STP. | UTP |
| In shielded twisted pair (STP) cable, each twisted pair is shielded/___ to reduce noise both from inside and outside the cable. | Insulated |
| ___ is the most popular type of network cable. | Ethernet/UTP |
| ___ is not suitable for data transmission | Category 1 UTP |
| ___ is rated for data transmission speeds up to 10 Gbps. | Category 7A UTP |
| Fiber optic cables are immune to all types of EMF monitoring. True or False? | True |
| Which guided media uses a laser as the light source? | Single-mode Fiber |
| Two types of unguided media are ___ and light transmissions | Radio waves |
| One problem with light transmissions is ___ conditions, such as fog, can degrade the signal. | atmospheric |
| Freedom of movement or ___ is an advantage of unguided/unbound media. | Mobility |
| Three disadvantages of unguided/unbound media are security, speed, and ___. | Distortion/interference |
| What is the International Organization for Standardization (ISO) most famous standard? | OSI Reference Model |
| ____ specifies different functions and services as data moves through the network. | Layering |
| The Seven layers of the OSI model are, Application, Presentation, Session, Transport, ____, Data link, and Physical. | Network |
| The ___ layer of the OSI reference model relates to the services that directly support user applications. | Application |
| Which layer of the OSI reference model provides flow control and error handling, and participates in solving problems concerned with the transmission and reception of packets? | Transport, Layer 4 |
| The OSI reference model layer that ensures that the information sent is reformatted back into the same format as the original and renders the underlying code into words, pictures, video or audio supported by the application is the ___ layer. Layer 6. | Presentation |
| The ___ layer of the OSI reference model performs name recognition and other functions such as security and synchronization that are needed to allow applications to communicate over the network. Layer 5. | Session |
| A ___is a highly structured dialog between two workstations. | Session |
| The Network layer of the OSI reference model responsible for ___ messages and translating logical addresses and names into physical addresses. | Addressing |
| which layer provides the functional and procedural means to transfer data between network entities and may provide the means to correct errors? ___, Layer 2 | Data Link |
| The physical layer receives data frames from the data layer and transmits it as ___ over a physical medium. | Raw bit stream |
| What are the Five layers of TCP/IP? | App, Transport, Network, Data Link, and Physical |
| What is a suite of protocols that has become the dominant standard for internetworking? | TCP/IP |
| A ___ combines several data or voice signals for transmission over one single medium and provides error correction and data security. | Multiplexer |
| Multiplexers use an error detection/correction scheme to ensure the ___ of the transmitted data. | Integrity |
| In order to “tap” into a multiplexed signal a person would have to know the... | Link protocol, data format, and channel assignment. |
| Wave division multiplexing combines several different data signals onto a single ___ cable. | fiber optic |
| Light signals are multiplexed by an ___. | Optical combiner |
| The de-multiplexer uses a ___ to split the light into many channels. | light splitter |
| TDM involves the distribution of ___ signals in the time domain | Multiple |
| Time division multiplexing (TDM) involves the distribution of multiple signals in the time domain. True or False? | True |
| Each user in TDM is assigned a specific ___. | Time slot |
| If a user has no data to send using TDM, the user time slot ___. | stays empty |
Created by:
MikeMcC
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