Cisco 251 Chapter 3
What is one advantage of network devices using OPEN standard protocols?
A client host and a server running different operating systems can successfully exchange data
Which three layers of the OSI model are comparable in function to the application layer of the TCP/IP model
Application Presentation Session
PC-Switch-Router-Router2-Switch2 -Server. If PC wer to transfer file to the server, what layers of the TCP/IP model would be used?
Application, transport, internet, and network access layers
What are three application layer protocols are part of the TCP/IP protocol suite?
DHCP DNS FTP
Which PDU is processed when a host computer is de-encapsulating a message at the transport layer of the TCP/IP model?
Segment
Which statement is correct about network protocols?
The define how messages are exchanged between the source and the destination
What will happen if the default gateway address is incorrectly configured on a host?
The host cannot communicate with hosts in other networks
Which characteristic describes the default gateway of a host computer ?
The logical address of the router interface on the same network as the host computer
What's message sizing?
The process of breaking up a long message into individual pieces before being sent over the network
What's message encoding?
The process of converting information from one format into another acceptable for transmission
What's message encapsulation?
The process of placing one message format inside another message format
ISOC organization ?
This organization promotes the open development, evolution, and use of the internet throughout the world
Which PDU format is used when bits are received from the network medium by the NIC of a host?
frame
What's the protocol's function TRANSPORT protocol?
managing the individual conversations between web servers and web clients
At which layer of the OSI model would a logical address be encapsulated?
network layer
What are proprietary protocols?
protocols developed by organizations who have control over their definition and operation
What method can be used by two computers to ensure that packets are not dropped because too much data is being sent too quickly?
flow control
What's the protocol's function APPLICATION protocol?
governing the way a web server and a web client interact
What's the protocol's function INTERNET protocol?
taking segments from the transport protocol, encapsulating them into packets and assigning them with appropriate addresses.
What type of communication will send a message to all devices on a local area network?
broadcast
EXhibit PC-Switch-Router-Router2-Switch 2-Server. What addressing will PC will generate?
A frame with destination MAC address of Router 1 A packet with destination IP address of Server B
A web client is sending a request for a webpage to a web server. From the perspective of the CLIENT, what is the correct order of the protocol stack that is used to prepare the request for transmission?
HTTP, TCP, IP, Ethernet
Which statement is true about the TCP/IP and OSI models?
The TCP/IP transport layer and OSI layer 4 provide similar services and functions
IANA organization?
This organization is responsible for overseeing and managing IP address, allocation, domain name management, and protocol identifiers.
ISO organization?
This organization is the largest developer of international standards in the world for a wide variety of products and services. it is known for its Open Systems Interconnection (OSI) reference model.
Which address does a NIC use when deciding whether to accept a frame?
destination MAC address
What process is used to place one message inside another message for transfer from the source to the destination?
encapsulation
What's the protocol's function NETWORK ACCESS PROTOCOL ?
preparing packets to be transmitted over the network media
What is an advantage of using STANDARDS to develop and implement protocols?
products from different manufactures can interoperate successfully