Answer / tej

Application
(Layer 7)
This layer supports application and end-user processes.
Communication partners are identified, quality of service is
identified, user authentication and privacy are considered,
and any constraints on data syntax are identified.
Everything at this layer is application-specific. This layer
provides application services for file transfers, e-mail,
and other network software services. Telnet and FTP are
applications that exist entirely in the application level.
Tiered application architectures are part of this layer.

Presentation
(Layer 6)
This layer provides independence from differences in data
representation (e.g., encryption) by translating from
application to network format, and vice versa. The
presentation layer works to transform data into the form
that the application layer can accept. This layer formats
and encrypts data to be sent across a network, providing
freedom from compatibility problems. It is sometimes called
the syntax layer.

Session
(Layer 5)
This layer establishes, manages and terminates connections
between applications. The session layer sets up,
coordinates, and terminates conversations, exchanges, and
dialogues between the applications at each end. It deals
with session and connection coordination.

Transport
(Layer 4)
This layer provides transparent transfer of data between end
systems, or hosts, and is responsible for end-to-end error
recovery and flow control. It ensures complete data transfer.

Network
(Layer 3)
This layer provides switching and routing technologies,
creating logical paths, known as virtual circuits, for
transmitting data from node to node. Routing and forwarding
are functions of this layer, as well as addressing,
internetworking, error handling, congestion control and
packet sequencing.

Data Link
(Layer 2)
At this layer, data packets are encoded and decoded into
bits. It furnishes transmission protocol knowledge and
management and handles errors in the physical layer, flow
control and frame synchronization. The data link layer is
divided into two sub layers: The Media Access Control (MAC)
layer and the Logical Link Control (LLC) layer. The MAC sub
layer controls how a computer on the network gains access to
the data and permission to transmit it. The LLC layer
controls frame synchronization, flow control and error checking.

Physical
(Layer 1)
This layer conveys the bit stream - electrical impulse,
light or radio signal -- through the network at the
electrical and mechanical level. It provides the hardware
means of sending and receiving data on a carrier, including
defining cables, cards and physical aspects. Fast Ethernet,
RS232, and ATM are protocols with physical layer components.

Answer / sreenesh

the osi -> open system interface .. there is a trick to
remember its order "Plse Do Not Throw Sweet Piza Away"

remember the first letr of each word..
and the explanation for the osi layer is nicely explained
by TEJ above..


Thanking you

Sreenesh Shashidharan
sreeneshsrn@gmail.com

Answer / soumya av

OPEN SYSTEM INTERCONNECTION MODEL...which is consist of 7
layers..they are....
1..phusical layer
2..data link layre
3..network layer
4..transport layer
5..session layer
6..presentation layer
7..application layer

hai , my name is sanjay i did my graduation bsc in 1998 i have in pharma marketing field from past 7 years & now i want to join bpo ,call centre can any body plase give the suggestions how to give answer for why ur leaving the sales field & joining bpo? & i want to know how the oppurtunities will be for me thanks in advance sanjay

2 Answers  

---

age limit for a customer service associate

1 Answers   FirstSource,

---

Why are you become a trainer

1 Answers   Aegis, iGate,

---

If you are a fresher applying for a process job and during interview the HR of the company offer you a job of sales manger with salary of 10 lakhs per annum. Would accept the offer or not? Give reasons.

6 Answers   Tech Mahindra,

---

what do you know about mumbai city

0 Answers   BPO,

---

---

what is mean by inbound?

9 Answers   Spanco,

---

WHAT DO U MEAN BY BRAND NAME?

4 Answers   HCL,

---

tell me about ur self

8 Answers   Aegis, Airtel, Allsec Technologies, Axion, DELL, FirstSource, Google, IBM, NetAmbit, Serco, TCS, Zensar,

---

Return and back both have the same meaning. Can we use the word "returned back"?

6 Answers   Accenture, Wipro,

---

what is mean by bpo

2 Answers  

---

do you see your career in call centers...??

2 Answers   Hutch,

---

HI MY NAME IS DHRUVA CHANDRA I HAVE FAILED INTERMITTENT THIS YEAR CAN I JOIN A CALL CENTER & even iam not 18 i am just 17

1 Answers   TATA,

---