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AOE-212 Q&A

Prepared by: John Vellone for Inter-M Corp

Server streaming set up mode

Q.What is the meaning of PCM?

A. PCM is Raw Audio (Not Compressed) it uses more bandwidth.

Definition:

Pulse-code modulation (PCM) is a method used to digitally represent sampled analog

signals. It is the standard form of digital audio in computers, Compact Discs, digital telephony and

other digital audio applications. In a PCM stream, the amplitude of the analog signal is sampled

regularly at uniform intervals, and each sample is quantized to the nearest value within a range of

digital steps.

Q. What is Unicast/Multi-cast

A. Unicast/Multi-cast selection only applies to PCM only

(1) Uni-cast is one to one Bi-directional One server to max 20 clients. LAN/WAN

(2) Multi-cast is one to N. One direction only LAN ( No Routing)

If you use C class, IP adress Strategy, 254 clients are possible.

Ex.: SUB NET 255.255.255.0 ( 254 possible IP adress)

With Advanced router configuration it is possible to have more clients.

Unicast Definition: Unicast

Unicast is the term used to describe communication where a piece of information is sent from one

point to another point. In this case there is just one sender, and one receiver.

Unicast transmission, in which a packet is sent from a single source to a specified destination, is

still the predominant form of transmission on LANs and within the Internet. All LANs (e.g. Ethernet)

and IP networks support the unicast transfer mode, and most users are familiar with the standard

unicast applications (e.g. http, smtp, ftp and telnet) which employ the TCP transport protocol.

Broadcast Definition:

Broadcast is the term used to describe communication where a piece of information is sent from

one point to all other points. In this case there is just one sender, but the information is sent to all

connected receivers.

Broadcast transmission is supported on most LANs (e.g. Ethernet), and may be used to send the

same message to all computers on the LAN (e.g. the address resolution protocol (arp) uses this to

send an address resolution query to all computers on a LAN). Network layer protocols (such as

IPv4) also support a form of broadcast that allows the same packet to be sent to every system in a

logical network (in IPv4 this consists of the IP network ID and an all 1's host number).

Multicast Definition:

Multicast is the term used to describe communication where a piece of information is sent from one

or more points to a set of other points. In this case there is may be one or more senders, and the

information is distributed to a set of receivers (theer may be no receivers, or any other number of

receivers).

Summary of content (4 pages)

PAGE 1
AOE-212 Q&A Prepared by: John Vellone for Inter-M Corp Server streaming set up mode Q.What is the meaning of PCM? A. PCM is Raw Audio (Not Compressed) it uses more bandwidth. Definition: Pulse-code modulation (PCM) is a method used to digitally represent sampled analog signals. It is the standard form of digital audio in computers, Compact Discs, digital telephony and other digital audio applications.
PAGE 2
One example of an application which may use multicast is a video server sending out networked TV channels. Simultaneous delivery of high quality video to each of a large number of delivery platforms will exhaust the capability of even a high bandwidth network with a powerful video clip server. This poses a major salability issue for applications which required sustained high bandwidth. One way to significantly ease scaling to larger groups of clients is to employ multicast networking.
PAGE 3
Q: There is this data configuration. I found no informations about it. A.: (DATA CLIENT) This is to set up the Dry Contact closure Type in here the address of the AOE that will send the data or contcts.The AOE will look for data closure information comming from the AOE at the address that was entered. (DATA Service) This activates the transmition of contact closure RECOMMENDATION : CHANGE the word to . RECOMMENDATION : CHANGE the word to Q.
PAGE 4
Dynamic DNS (DDNS) is a method of automatically updating a name server in the Domain Name System (DNS), often in real time, with the active DNS configuration of its configured hostnames, addresses or other information. The term is used to describe two different concepts. At the administration levels of the Internet, "dynamic DNS updating" refers to systems that are used to update traditional DNS records without manual editing.