Vajad kellegagi rääkida?
Küsi julgelt abi LasteAbi
Logi sisse
Sulge

"echelon" - 5 õppematerjali

Echelon

Kasutaja: Echelon

Faile: 0
LONWORKS
14
docx

LONWORKS

Järgmis töö eesmärgiks on uurida ja leida erinevat informatsiooni LonWorksi kasutamise ja spetsifikatsioonide kohta. Probleemiks on LonWorksi kasutamisjuhendi tõgendamine ja kasutamise kirjeldus lihtsale inimesele arusaadavaks. Probleemi lahendamiseks otsitakse internetist erinevat informatsiooni LonWorksi kasutamise kohta ja katsutakse seda selgeks teha ka lihtinimesele, kes pole ei puutu kokku automaatikaga. 1. LONWORKSIST LonWorks (joonis1.1) on väljatöötatud Echelon firma poolt ja jõudnud standardiks ANSI/(EIA)CEA709.1, IEEE 1493-L, CEA-852 ja Control Network Protocol (CNP) . Lonworksi kasutatav keskkond on hoone elektrivõrk (keerutatud paarid[UTP], raadiovõrk[RF], teiste firmade ülekandeseadmed, fiiberoptika ja elektriliinid). LonWorksi maksimaalne andmeedastuskiirus on 610 bit/sek kuni 1.25 Mbit/sek, mis on kõvasti kiirem nt. sellisest seadmest nagu X10, mille maksimaalne andmeedastuskiirus on 50-60 bit/sek

Masinaehitus → Automaatika
16 allalaadimist
Manners in Estonia
13
pptx

Manners in Estonia

important as time spent at the negotiating table. Although Estonians juxtapose business and social situations, it is important to maintain a formal demeanour at meetings. Estonians dislike an overly casual attitude towards business, especially from foreigners. It generally takes several meetings to reach a decision. In most cases, decisions are still made at the top of the company, so unless you are meeting with the top echelon of the company, what you propose will have to make its way up the chain of command for approval. Older businesspeople are generally only fluent in Estonian or Russian. Therefore, you may wish to have an interpreter with you at meetings. Thank you for listening!

Keeled → Inglise keel
7 allalaadimist
Tööstuslik andmeside kontrolltöö 2 abimaterjal - vastused
3
doc

Tööstuslik andmeside kontrolltöö 2 abimaterjal - vastused

handset uses one timeslot for sending and theother for receiving.· GSM uses 200 KHz channelsdivided collisions - known as Reservation CSMA­ If SEchelon Length field in order to weed out collision fragments, before · A Late Collision occurs when two devices transmit at the and receiving. · Fixed vs Rotating slots · PSlot: fixed slots ­> prioritized messages· it is forwarded

Informaatika → Tööstuslik andmeside
31 allalaadimist
Andmeturve konspekt- kokkuvõte
63
docx

Andmeturve konspekt / kokkuvõte

­ Kahte sorti: Cypherpunks ja Mixmaster ­ Cypherpunks: PGP baasil ­ Mixmaster: oma võtmed (RSA+3DES), fikseeritud suurus, ümber järjestamine Varia · Krüptopoliitika: valitsuse huvid, USA, Prantsusmaa, Venemaa, Wassenaar; ringiga samas tagasi (EU) · Steganograafia ja selle matemaatilisus · Tarkvara patendid, pöördprojekteerimine, fair use · Kopeerimiskaitsed, DMCA (Corley, Johansen/DeCSS, Sklyarov), DRM, CPRM, SDMI (Felten) · Massiline pealtkuulamine (Echelon, PRSIM, XKeyscore, krüpto nõrgestamine, ...) · Tempest

Informaatika → Andmeturbe alused
39 allalaadimist
TheCodeBreakers
946
pdf

TheCodeBreakers

hours. Occasionally an agency broke down a late intercept that bore on a point of Japanese-American negotiations and rushed it to the Secretary of State an hour before he was to meet with the Japanese ambassadors. Volume attained overwhelming proportions. By the fall of 1941, 50 to 75 messages a day sluiced out of the two agencies, and at least once the quantity swelled to 130. Some of these messages ran to 15 typewritten pages. The top-echelon recipients of MAGIC clearly could not afford the time to read all this traffic. Much of it was of secondary importance anyway. Kramer and Colonel Rufus S. Bratton, army G-2 Far Eastern Section chief, winnowed the wheat from this chaff. Reading the entire output, they chose an average of 25 messages a day for distribution. At first Kramer supplemented his translations with gists for recipients too busy to read every word of the actual intercepts, starring the important ones,

Informaatika → krüptograafia
15 allalaadimist


Sellel veebilehel kasutatakse küpsiseid. Kasutamist jätkates nõustute küpsiste ja veebilehe üldtingimustega Nõustun