Sunday, December 12, 2010

CV letter

Name: Uugantsetseg Tserenbat
Address: 2g-61 13th horoo Bayangol district
Country: Ulaanbaatar
Telephone: 99670744
Cell Phone:
Email: uuganaa_47@yahoo.com

Date of Birth: 23th of May 1990
Place of Birth: Ulaanbaatar Mongolia
Citizenship: Mongolian
Visa Status: 5046244960
Gender: Female
Marital Status: Single(unmarried

I was thinking about become employer of your company. So I want I work by telecommunication engineer at your company. I studied by this career at school of information and communication technology, MUST in 2008-2012.

High School: 47th High School, graduated in 2008, UB , Mongolia
University: School of Information and Communication Technology of Mongolian University of Science and Technology

Certifications and Accreditations: EWRICA (computer and english)
Computer Skills: Good

I can write and speak in English. I know how to connect and set up optic cable, data link and ability to work well computer’s programs.

Playing basketball and listen to music. I meet friends in free rime.

Wednesday, December 8, 2010

Abstract

TCP/IP
In the 1970s, the Department of Defense commissioned the development of the
TCP/IP suite of protocols to provide interoperability amonsg computer.
The original Internet had four primary purposes:
_ To provide electronic mail service to the users
_ To support file transfer between hosts
_ To permit users to log on remote computers
_ To provide users with access to information databases
TCP/IP is a suite of protocols that coordinate to support an Internet, which is
a collection of network segments
Transmission Control Protocol (TCP)
TCP is a connection-oriented guaranteed-delivery protocol that interoperates with
IP to deliver packets across a network. The transmitting and sending ends of the
circuit exchange setup packets to establish a connection before information packets
begin to flow. TCP/IP is independent of the physical medium.
User Datagram Protocol (UDP)
Error correction delays packet flow. To a data application, delay is either invisible
or appears as a longer response time, which may be annoying but does not affect
integrity. Voice and interactive video are less tolerant of delays. Too much delay
results in users talking over each other, making it difficult to communicate.
Internet Protocol (IP)
Routers at IP nodes usually have multiple paths for delivering packets. When a
packet arrives, a router reads the destination address, consults its internal routing
table to determine the appropriate route, and forwards the datagram over the
physical network to the destination. Routing tables are either static or dynamic.

Translation methods

1. at first ,I read a title
2. next, I translate the title
3. I read a text
4. I find the new words
5. I write the new words
6. I translate the new words
7. I translate out and out of the clause
8. I draft out and out of the clause
9. Next, I read a text once
10. I translate the paragraph
11. I write the paragraph
12. I translate the text
13. I draft the text
14. I read a text again
15. I write the text of the translation

TRANSMISSION CONTROL PROTOCOL/INTERNET PROTOCOL (TCP/IP)

TRANSMISSION CONTROL PROTOCOL/INTERNET
PROTOCOL (TCP/IP)

In the 1970s, the Department of Defense commissioned the development of the
TCP/IP suite of protocols to provide interoperability among computers. The protocols
emerged from research that spanned three decades. ARPANET, as it was
called in its early days, was a loosely confederated collection of networks operated
by colleges, universities, and defense-related companies and agencies.
In late 1989, the original ARPANET evolved into a network that subsequently
became the Internet. Internet is a collection of independent networks that are
interconnected to act as a coordinated unit. Commercial companies operate the
networks, but each is independent and no single body has overall control. The
IETF controls the structure of the protocols, which compensate for the unreliability
of the underlying IP network and insulate users from the need to understand
the network’s physical and addressing architecture.
The original Internet had four primary purposes:
_ To provide electronic mail service to the users
_ To support file transfer between hosts
_ To permit users to log on remote computers
_ To provide users with access to information databases
A TCP/IP Internet fits in a three-layer framework atop the physical and
datalink layers as shown in Figure 6-5, which compares TCP/IP to the OSI model.
The TCP/IP and OSI protocols do not correspond directly, and the boundaries
between layers are not identical, but they share the layered concept and have corresponding
functions. The application services layer defines the interface to the
TCP/IP network.
The primary application layer protocols are SMTP for e-mail, FTP for file
transfers, terminal emulation protocol (TELNET) to enable users to run commands
on a remote computer over the network, and HTTP to support database
access through Web browsers.
TCP/IP is a suite of protocols that coordinate to support an Internet, which is
a collection of network segments. Figure 6-6 illustrates broadly how a TCP/IP network
functions. The protocol stack runs on hosts that may be part of the same segment
or independent of each other. We assume that both hosts are connected to a
LAN, and that a router interfaces the LAN to a wide area network. A single carrier
may provide the WAN, or as the figure shows, the WANs may be separate and interconnected
with routers. Before any data can be transferred, TCP sets up a connection
with its peer at the receiving endpoint. The application, receiving an indication that
the connection is established and TCP is ready, sends a data stream across the interface.
TCP segments the data stream, appends a transport header, and hands it to IP.
The IP portion of the protocol appends a datagram header, which contains the
receiver’s IP address, and hands a packet stream to the router. The router consults its
tables, decides which route to use, and forwards the packet stream to the next router
in sequence until they reach the destination. TCP at the receiving host checks for
errors, acknowledges the packets, strips the headers, and hands the data stream to
the application. This section examines the principal protocols in more detail.

Transmission Control Protocol (TCP)
TCP is a connection-oriented guaranteed-delivery protocol that interoperates with
IP to deliver packets across a network. The transmitting and sending ends of the
circuit exchange setup packets to establish a connection before information packets
begin to flow. TCP/IP is independent of the physical medium. The protocol
makes use of the physical and datalink layers on the LAN. Between the LANs, the
WAN protocols handle packet transfer. TCP accepts data streams from the application
program, breaks them into datagram size, and hands them to IP for routing
across the network. TCP on the receiving end checks for errors, reassembles the
original data stream, and passes it to the application. TCP handles packet sequencing,
flow control, retransmission of errored or missing packets, and deletion of
duplicate packets. TCP can be used with a variety of packet level protocols, but it
is usually paired with IP.
TCP can support either go back-n or selective repeat packet acknowledgment.
Under go back-n, when the receiving end acknowledges packets, it sends the
sequence number of the next packet it is prepared to accept, which communicates
to the sender the number of the last correctly received packet. The sender transmits
the next packet in sequence plus all subsequent packets, whether they were
in error or not. Under selective acknowledgment, the receiver acknowledges
specific packets. The acknowledgment process provides a convenient method of
flow control known as “sliding-window.” If the receiving end has plenty of space
in its buffers, it sends a window message to the sender indicating how many
packets it is prepared to receive before it sends an acknowledgment. When the
buffer begins to overflow, it reduces the size of the window in its next acknowledgment.
In this way, the protocol keeps the sending end from overrunning its
buffer space and keeps the network operating at maximum throughput. At the
worst extreme, the receiver could acknowledge packets one at a time, which would
slow data transfer to a minimum.
The sending TCP sets a retransmit timer for each packet. This timer specifies
how long to wait for acknowledgment before assuming the packet failed to reach
the destination. When the timer expires, the sending host resends the packet
and waits twice as long as the time set in the preceding window. Each time an
acknowledgment is not received, the retransmit timer doubles. This process may
result in duplicate packets, so the receiving TCP host must be prepared to discover
and discard duplicates.
TCP delivers packets to specific ports or sockets depending on the application.
Both TCP and UDP, which is discussed next, use 16-bit values called port numbers
to identify the TOS requested by the application. Certain applications normally
use well-known ports. For example, FTP uses port 21, HTTP uses port 80, and
TELNET uses port 25. The port identification, which is contained in the TCP
header, aids the receiving application in identifying the type of data being
received.

User Datagram Protocol (UDP)

Error correction delays packet flow. To a data application, delay is either invisible
or appears as a longer response time, which may be annoying but does not affect
integrity. Voice and interactive video are less tolerant of delays. Too much delay
results in users talking over each other, making it difficult to communicate.
Furthermore, errors are inconsequential to voice and video. TCP, therefore, is not
an appropriate protocol for these time-sensitive applications. Voice and video, as
well as other protocols such as SNMP, use UDP for the transport protocol. UDP is
a connectionless protocol that contains no provision for error correction, packet
sequencing, or retransmission.
A UDP datagram has considerably less overhead than TCP. The header
contains only the source and destination ports, the length of the data block, and a
checksum for verifying the header. Voice and video packets are normally quite
small. To minimize transmission time, it is desirable to keep the transport header
as short as possible.

Internet Protocol (IP)

Routers at IP nodes usually have multiple paths for delivering packets. When a
packet arrives, a router reads the destination address, consults its internal routing
table to determine the appropriate route, and forwards the datagram over the
physical network to the destination. Routing tables are either static or dynamic.
Static tables are set in the router’s software and remain until they are reconfigured.
Static tables are appropriate when the router has a limited number of
choices, but they are inflexible and unable to adapt to changing circumstances.
Routers with dynamic tables exchange messages to keep each other updated with
network changes such as circuit failures and route reconfiguration.
An IP datagram contains a header that is 20 octets or more in length plus a
data field that can be up to 65,535 octets long. The maximum length permitted by
a network is called its maximum transfer unit (MTU). For example, Ethernet has an
MTU of 1500 octets. When it is necessary to send an IP datagram across a network
with a short MTU, IP divides the datagram into fragments and reassembles it at
the destination, a process called fragmentation.
IP is an unreliable best effort protocol. Each node along the network
attempts to forward packets to the next node, but if it is unsuccessful, it is permitted
to discard the packet. Routers attempt to forward messages to the destination
over the shortest path, but there is no assurance that a packet is always
heading toward its destination, so packets can arrive out of sequence. Every
packet contains a TTL counter that has a maximum value of 255 s. Each router that
forwards a datagram decrements the TTL by one. If a router receives a packet with
an expired TTL timer, it discards the packet. This process prevents undelivered
packets from traveling the Internet forever. A protocol known as Internet Control
Message Protocol (ICMP) reports errors and messages regarding datagram delivery
and alerts the sender when a destination is unreachable.
To clarify the way these protocols interact, assume an e-mail application
such as Microsoft Outlook originates an e-mail message and sends it to an e-mail
server across Ethernet. As shown in Figure 6-7, the application sends a data stream
to TCP, which chops it into packets, appends a TCP header, and sends it to IP for
routing. IP appends a header containing the sending and receiving addresses,
TOS, and other such information, and hands it to the Ethernet LLC. The LLC
appends a header containing, among other things, the receiving MAC address,
and arranges for transmission across the physical medium. If the sending driver
does not have the MAC address of the receiver in its cache memory, it sends an
Address Resolution Protocol (ARP) request, which is discussed later, to determine
it. The receiving MAC, recognizing its address, strips the Ethernet header and
passes the packet to IP, and on up to the mail server through TCP.

Monday, December 6, 2010

New words

Transmission Control Protocol/ Internet Protocol (TCP/IP)
emerge-үүсэх
independent-үл хамааралтай
interconnected-харилцан холбох
paired-хосолсон
delay-саатал
coordinated-зохицуулсан
act-хийх, гүйцэтгэх
research-судлах
sequence-дэс дараалал
plus-давуу тал
subsequent-дараагийн, удаах
packet-пакет
acknowledgment-хүлээн авалтын баталгаа
receiver-хүлээн авагч
specific-мэдрэмтгий
flow-цутгах
plenty-элбэг
convenient-цаг хүч хэмнэсэн
method of-арга барил
indicating-гэрэл дохио өгөх
overflow-халих
reduces-багасгах
throughput-нэвтрүүлэх чадамж
extreme-хэцүү
retransmit-дохио дамжуулал
duplicate-дахин хийх
sockets-залгуурын суурь
depending-шаардагдах
discussed-хэлэлцэх
identify-таних
contained-агуулах, багтаах
appears-харагдах
integrity-бүхэл бүтэн байдал
interactive-харилцан үйлдэл
tolerant-тэсвэртэй
considerably-их
checksum-шалгах, хянах
determine-тодорхойлох
inflexible-тахийдаггүй
circumstances-нөхцөл байдал
fragment-хэлтэрхий
reassembles-дахих угсрах

TRANSLATION METHODS

1. Read the title carefully and try to understand it.
2. Glance over the whole text.
3. Guess what it is about generally.
4. Reading thoroughly sentence by sentence.
5. Look at the structure of the sentence.
6. Look at prefix and conjunction words in detail.
7. Identify the type for each word.
8. Read again carefully and try to guess the meaning of each unknown word.
9. Look new word up in the dictionary.
10.Try to translate and lay out the sentence.
11.Write down a draft translation.
12.Make it easy to understand and examine the wording.
13.Rearrange the draft text and produce an initial version.
14.Check the principal meaning, whether it is out of context.
15.Produce a final version out of the initial version.

Monday, November 30, 2009

To celebrate twenty years of Star Wars, director George Lucas has finally released the film as he originally intended it to be. He has always said that the trilogy – which includes Star Wars, The Empire Strikes Back and The Return of the Jedi – was never as good as he had wanted. After years of watching these films on video, you can experience this thrilling space adventure again in the cinema and with fantastic sound.

Íàéðóóëàã÷ George Lucas “Star Wars” ãýäýã øèíý êèíî çîõèîí á¿òýýñíýý ìýäýãäñýí. Òýð êèíîíûõîî çîõèîëûí òàëààð õýëýõäýý : Empire strikes back áîëîí return of Jedi-ã êèíîíäîî áàãòààñàí õýçýý ÷ áàéãààã¿é ñàéí á¿òýýë õèéõèéã õ¿ññýí. Æèëèéí äàðàà êèíîíûõîî ä¿ðñèéã ¿çñýí áà êèíîãîî óëàì ñîíèðõîëòîé áîëãîõûí òóëä åð áóñûí äóó áîëîí ñàíñàð îãòîðãóé, àéìøãèéí ¿éë ÿâäëûã íýìæ îðóóëñàí.

The trilogy is a classic tale of the fight between good and evil. However, instead of happening on earth, the action takes place “... a long time ago in a galaxy far, far away.” It involves not only humans but all sorts of frightening, and sometimes amusing, robots and alien creatures. The heroes of the trilogy are Luke Skywalker, Han Solo and Princess Leia, who work together to fight Darth Vader, the evil leader who wants to take over the universe.

Ýíý çîõèîë íü ñàéí áîëîí ìóó õî¸ðûí õîîðîíäûí çºð÷ëèéã õàðóóëñàí. ¯éë ÿâäëûã äýëõèé äýýð ºðí¿¿ëýõèéí îðîíä îëîí æèëèéí ºìíº àëñûí àëñàä îðøèõ ñàíñàð îãòîðãóéí àäàë ÿâäëû㠺㿿ëýõýýð øèéäñýí. Ǻâõºí õ¿í òºðºëõòºíèéã õàìðóóëààä çîãñîîã¿é àéìøãèéí çàðèìäàà õàðü ãàðàãèéí õ¿í áîëîí ðîáîòóóäûí èíýýäòýé ÿâäëóóäààñ îðóóëñàí. Çîõèîëûí ãîë áààòðóóä áîëîõ Luke Skywalker ,Han Solo, ã¿íæ Leia íàð íü Darth Vader-òýé òýìöýõ áà ìóó òàëûí óäèðäàã÷èéã ñóïåð õ¿í áàéëãàõààð õ¿ññýí.

Excellent performances are given by starts Harrison Ford, Carrie Fisher, Alec Guinness and Mark Hamill, but the special effects play a bigger role than any of the octors. There are amazing space battles and gigantic, fighting robots with laser weapons.

Êèíîíä Harrison Ford, Carrie Fisher, Alec Guinness, Mark Hamill íàðûí îäóóä òîãëîñîí áà ýäãýýð íü á¿ãä ãîë ä¿ðèéã á¿òýýñýí. Êèíîíû ãàéõàëòàé õýñã¿¿äèéã õèéõäýý äàéíä ëàçåð çýâñýãòýé ðîáîòóóäûã àøèãëàñàí. Àãààðò íèñäýã ìîòîöèêëîîð ÿâæ áàéãàà íü òàíä ¿íýõýýð èòãýìýýðã¿é ñàíàãäàõ áîëíî. ̺í ò¿¿í÷ëýí òàíä åð áóñûí õ¿í áîëîí ñàíñàð îãòîðãóéí òóõàé ºã¿¿ëñýí íü òàíä òààëàãäàõ áîëíî.

George Lucas says : “when I made the original Star Wars, I was very interested in creating a modern myth.Greek mythology or mythology from any country, often takes place in an unknown area … and the only area we have now which is like that is outer space.” With this fantastic trilogy Lukas has certainly succeeded in creating a myth that will never be forgotten. Even if you have seen the original films, you should definitely not miss the chance to experience the Star Wars trilogy as Lucas really wanted it to be.
George Lucas õýëýõäýý “áè Star Wars-èéã ñîíèðõîëòîé áîëîí îð÷èí ¿åèéí äîìîã áàéäëààð õèéõèéã çîðüñîí. Ãðåêèéí äîìîã áîëîí áóñàä îëîí îðíû äîìãóóäààñ èõýâ÷ëýí òàíèãäààã¿é ãàçðûí òàëààðõ ìýäýýëëèéã ñóäàëæ ìºí ãàäààä ñàíñðûí òóõàé îðóóëñàí.” Åð áóñûí ýíý çîõèîëîîðîî Lucas õýçýý ÷ ìàðòàãäàõààðã¿é äîìãèéí òóõàé ºã¿¿ëñýí. Õýðâýý òà æèíõýíý êèõî ¿çýõèéã õ¿ñâýë ýðãýäçýýã¿é George Lucas –èéí Star Wars-èéã ¿çýýðýé.