Fax Machines – Fax machines contain analog modems. This type of modem technology uses the voice network technology. When the receiving end handles a fax connection it listens for a digital connection that has been converted from an analog signal using a voice network. Pagers – Pagers also known as beepers were primarily used over data networks by sending numerical short messages similar to the SMS service. Since the introduction of data pagers, voice pagers have also emerged.
Access mechanisms are; mobile broad band over 3G or 4G network. Also Public/private Wii-FI * LAN- Local area network. (On the same network) * Modem- Middle man from provider to device. * Wireless - The use of radio or microwave signals, instead of cables. * WAP- Wireless application protocol.
Analog signals send out video, voice, data, or image information. Analog transmissions travel by way of carrier signals via Amplitude Modulation (AM) or Frequency Modulation (FM). Digital signals transfer data trough copper wires or optical fibers via electro-magnetic signaling. In today’s society, both analog and digital signaling is prevalent in various forms of communication; therefore, converting signals from analog to digital or vice versa is necessary. Encoding a signal for transmission permits the switching of an analog signal into a digital signal.
Punch – Down Blocks - is a type of electrical connection often used in telephony. 8. Consolidation points - Location where disparate consignments are collected to be shipped together to their final destination. 9. Crimpers – a tool that use to join together wires 10.
How can you find the phone number for Ace Electronics in a file named phone that contains a list of names and phone numbers? grep “Ace Electronics” phone Which command can you use to display the entire file in alphabetical order? sort phone How can you display the file without any duplicate lines? uniq phone 6. What happens when you use diff to compare two binary files that are not identical?
Unit 1 Assignment 1 voice vs data Dominic Hennen Cell phones use a both voice and data networks you can speak which is going out over the voice network. You will also be using the data network for all your internet surfing as well as your text messages and pictures been sent as well, Landline phones use a voice network for talking to other people over the network on the older internet before high-speed internet they also sent data but that technology has fallen to the wayside with the takeover of high speed internet. SMS/text messaging are using the data network so you can send pictures and just text to another person much in the way a email will work just text no voice. Fax Machines send data by compressing the image that was scanned and sending it out over the line the fax receives and sends digital tones and this is how the communicate with one another. Pagers are a telecommunication device but are data networks there are no voice being transmitted over the proses.
the magnetic field around the adjacent pairs of wire the use of braided wire to shield the adjacent wire pairs the reflection of the electrical wave back from the far end of the cable the collision caused by two nodes trying to use the media simultaneously 5. Which data communications standard provides broadband access in a wireless network? GSM Wi-Fi WiMAX Bluetooth 6. Which OSI layer is responsible for managing optical signals used for data communication? presentation data link transport physical 7.
What role does each protocol play in the video call process? SIP-is an application level signaling protocol for terminating, setting up, and modifying real-time video/audio sessions between participants over an IP data network. H.320-It is used for narrow-band visual telephone systems and terminal equipment with specified technical requirements. H.323-Is the standard that addresses bandwidth, multimedia transport and control, call signaling and control or multi-point and point-to-point video/audio teleconferences. Video Teleconferencing (VTC) is a communication technology that allows people located at two or more different locations to visually see and talk face-to-face meeting from thousands of miles apart, these systems can transmit bi-directional video, data streams and audio during the session.
Most WLANs operate in the 2.4GHZ and 5GHZ frequency ranges and transmit 100-500 feet. 2. How do the NIC and AP work together to transmit message in an 802.11b WLAN? The AP acts as a repeater to ensure that all computers within range of the AP can hear the signals of all computers in the WLAN. All NICs in the WLAN transmit their packet to the AP and then the retransmits the packet over the wireless network to its destination-or retransmits the packet over the wired network to its destination.