Computer Networks and Protocols

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Questions and Answers

What OSI layer is responsible for establishing, managing, and terminating connections?

Presentation Layer

Transport Layer

Session Layer (correct)

Application Layer

Which protocol enables the delivery of audio and video over IP networks?

FTP

RTP (correct)

Telnet

SMTP

Which OSI layer is responsible for data encryption?

Session Layer

Presentation Layer (correct)

Transport Layer

Network Layer

Which protocol is not typically used in the Session Layer?

FTP Signup and view all the answers

Which protocol is used for remote connection?

Telnet/SSH Signup and view all the answers

At which OSI layer do connection-establishment protocols operate?

Session Layer Signup and view all the answers

Which protocol is used for uploading and downloading files?

FTP Signup and view all the answers

Which layer is responsible for data encryption and compression?

Presentation Layer Signup and view all the answers

What is a characteristic of the TCP/IP protocol suite?

It is an open standard protocol not tied to one vendor. Signup and view all the answers

What OSI layer does NETBIOS operate on?

Session Layer Signup and view all the answers

What is the purpose of the Data Link Layer Process in the vertical communication on the source host?

Creates a new frame and encapsulates the IP packet. Signup and view all the answers

Which protocol is used for emailing?

SMTP Signup and view all the answers

What is the term used to describe the process of placing a message in the data field of another message?

Encapsulation Signup and view all the answers

What is the default protocol for Microsoft, UNIX, and LINUX Operating Systems?

TCP/IP Signup and view all the answers

What is the next version of TCP/IP?

TCP/IP v6 Signup and view all the answers

What is the purpose of the Internet Layer Process in the vertical communication on the source host?

Creates an IP packet. Signup and view all the answers

What is the term used to describe the communication between different layers of the OSI model within a single host?

Vertical communication Signup and view all the answers

What is the key requirement for all switches in a network and all routers in an internet?

To follow the same standard. Signup and view all the answers

Study Notes

Networking Protocols

HTTP (Hyper Text Transfer Protocol) is used for browsing
FTP (File transfer Protocol) is used for downloading/uploading
SMTP (Simple Mail transfer Protocol) is used for emailing
POP3 (Post office transfers Protocol) is used for emailing
Telnet/SSH (secure Shell) is used for remote connection
RTP (Real-time Protocol) is used for delivering audio/video over IP networks

OSI Seven Layers

Presentation

Data encryption happens at this layer
Data creation happens at this layer

Major Networking Protocols

TCP/IP is an open standard protocol
IPX/SPX is a protocol suite
NetBEUI is a protocol suite
Apple Talk is a protocol suite

TCP/IP Protocol Suite

TCP/IP is not tied to one vendor
TCP/IP is the internet protocol
The current version is TCP/IP v4
The next version is TCP/IP v6
TCP/IP is the default protocol for Microsoft Operating Systems, UNIX Operating Systems, and LINUX Operating Systems

OSI Versus TCP/IP

Message Communication in TCP/IP

Application layer: HTTP messages are sent
Transport layer: TCP messages are sent
Internet layer: IP packets are sent
Data Link layer: Ethernet frames are sent
Physical layer: bits are sent

Vertical Layered Communication

All switches in a network and all routers in an internet must follow the same standard
Vertical communication happens on the source host

OSI Seven Layers

Session

Protocols/API's that operate on this layer include: RPC, SQL, NETBIOS

Encapsulation

Encapsulation is the process of placing a message in the data field of another message
In the data link layer, an IP packet is encapsulated in a frame, adding a frame header and perhaps a trailer

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Description

This quiz covers various protocols and their uses in computer networks, including HTTP, FTP, SMTP, POP3, Telnet/SSH, and RTP. It also touches on the OSI seven-layer model.