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CSCI 1100 Final Exam Study Guide Solutions

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CSCI 1100 Final Exam Study Guide Solutions Router - ANSWER-manages IP addresses of local machines and connects you to an outside network, transfers data between two or more networks Switch - ANSWER-connects local machines to each other in a local level, Acts like a traffic signal of data packe...

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  • November 10, 2024
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CSCI 1100 Final Exam Study Guide

Solutions


Router - ANSWER✔✔-manages IP addresses of local machines and connects you to an outside network,

transfers data between two or more networks


Switch - ANSWER✔✔-connects local machines to each other in a local level, Acts like a traffic signal of

data packets on a network, receive data and send to intend nodes on SAME network (replaces hub)


NIC (Network interface card) - ANSWER✔✔-An expansion card that enables a computer to connect to

other computers or to a cable modem to facilitate a high-speed internet connection.


Wifi (wireless fidelity) - ANSWER✔✔-the standard for wireless ethernet networks


Cat 6a - ANSWER✔✔-cable designed for ultrafast ethernet networks that run at speeds as fast as

10Gbps, FASTEST


Cat 6 - ANSWER✔✔-cable designed to achieve data transfer rates that support a gigabit ethernet

network


Cat 5e - ANSWER✔✔-cable designed for 100Mbps-wired ethernet networks that were popular before

gigabit ethernet networks became the standard, SLOWEST


LAN - ANSWER✔✔-Local area network; a network in which the nodes are located within a small

geographic area




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WAN - ANSWER✔✔-Wide area network; spans a large physical distance (Ex: the internet b/c spans entire

globe)


802.11 - ANSWER✔✔-standard used for routers to connect to a computer


ARP (Address Resolution Protocol) - ANSWER✔✔-Knows the next hop's hardware/MAC address (used at

the local level)


HTTP - ANSWER✔✔-The protocol that allows files to be transferred from a web server so that you can

see them on your computer by using a browser


SMS - ANSWER✔✔-technology that enables short text messages (up to 160 characters) to be sent over

mobile networks


MMS - ANSWER✔✔-Multimedia Message Service, a service that allows users to send messages that

include text, sound, images, and video clips to other phones or e-mail addresses


GPS - ANSWER✔✔-Global Positioning System; a system of 21 satellites (plus 3 working spares), built and

operated by the U.S. military, that constantly orbit the earth. The satellites provide information to GPS-

capable devices to pinpoint locations on the earth


VOIP - ANSWER✔✔-Voice over internet protocol; turns a computer into a phone (ex: skype)


TCP - ANSWER✔✔-delivers messages in order and reliably (ex: emails, web browsing, etc...); part of the

transport layer of the protocol stack


UDP - ANSWER✔✔-Fast but non-guaranteed transfers of messages (ex: VOIP, music streaming, etc...);

part of the transport layer of the protocol stack




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Network Protocol - ANSWER✔✔-defines the FORMAT and the ORDER of messages exchanged between

2+ communicating entities as well as the ACTIONS taken on the transmission and/or receipt of a message

or other event


Application layer (HTTP) - ANSWER✔✔-turns the typed url into a get request


Transport layer - ANSWER✔✔-breaks messages into segments


Network layer (IP) - ANSWER✔✔-Routing of datagram from source to destination; addresses each packet

so that it can traverse the network from the sender to the destination; the source is the IP address. Each

packet is given a source ip, a destination ip, and a data part


Link Layer (Ethernet/LAN) - ANSWER✔✔-Data transfer between neighboring network elements;

Addresses each IP packet with hardware/MAC address so that it will be delivered to the next hop


MAC address - ANSWER✔✔-The physical address of an individual device, which is stored on the NIC


Physical layer - ANSWER✔✔-bits "on the wire", actually sends the data across the network. The other

layers get the data ready to be sent


The protocol stack - ANSWER✔✔-collection of protocols implementing a series of layers; Traverses these

layers: application > Transport > Network > datalink > physical


Traverse - ANSWER✔✔-Goes from top-down or bottom-up


Collision on wired Ethernet networks - ANSWER✔✔-occurs when 2 stations transmit at the same time;

resolved by the stations waiting a short pseudo-random time interval to retransmit


Digital convergence - ANSWER✔✔-Single unifying device to handle media, Internet, entertainment, and

telephony needs; expressed in the range of devices now on the market (ex: smartphones)


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