CCNA Chapter 3
Which three are components of message timing?
-flow control -access method -response time
HOST CONFIG
DHCPv4 - Dynamic Host Configuration Protocol for IPv4. A DHCPv4 server dynamically assigns IPv4 addressing information to DHCPv4 clients at start-up and allows the addresses to be re-used when no longer needed. DHCPv6 - Dynamic Host Configuration Protocol for IPv6. DHCPv6 is similar to DHCPv4. A DHCPv6 server dynamically assigns IPv6 addressing information to DHCPv6 clients at start-up. SLAAC - Stateless Address Autoconfiguration. A method that allows a device to obtain its IPv6 addressing information without using a DHCPv6 server.
Name System
DNS - Domain Name System. Translates domain names such as cisco.com, into IP addresses.
What is the process of converting information into the proper form for transmission?
ENcoding
File Transfer
FTP - File Transfer Protocol. Sets the rules that enable a user on one host to access and transfer files to and from another host over a network. FTP is a reliable, connection-oriented, and acknowledged file delivery protocol. SFTP - SSH File Transfer Protocol. As an extension to Secure Shell (SSH) protocol, SFTP can be used to establish a secure file transfer session in which the file transfer is encrypted. SSH is a method for secure remote login that is typically used for accessing the command line of a device. TFTP - Trivial File Transfer Protocol. A simple, connectionless file transfer protocol with best-effort, unacknowledged file delivery. It uses less overhead than FTP.
Web and Web Service
HTTP - Hypertext Transfer Protocol. A set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the World Wide Web. HTTPS - HTTP Secure. A secure form of HTTP that encrypts the data that is exchanged over the World Wide Web. REST - Representational State Transfer. A web service that uses application programming interfaces (APIs) and HTTP requests to create web applications.
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
This standards organization is responsible for IP address allocation and domain name management.
IANA
Which three acronyms/initialisms represent standards organizations?
IANA IEEE IETF
Which two protocols function at the internet layer? (Choose two.)
ICMP IP
This standards organization is concerned with the Request for Comments (RFC) documents that specify new protocols and update existing ones.
IETF
Service Discovery Protocols
Protocols are used for the automatic detection of devices or services. Examples of service discovery protocols include Dynamic Host Configuration Protocol (DHCP) which discovers services for IP address allocation, and Domain Name System (DNS) which is used to perform name-to-IP address translation.
Routing Protocols
Protocols enable routers to exchange route information, compare path information, and then to select the best path to the destination network. Examples of routing protocols include Open Shortest Path First (OSPF) and Border Gateway Protocol (BGP).
Network Communications Protocols
Protocols enable two or more devices to communicate over one or more networks. The Ethernet family of technologies involves a variety of protocols such as IP, Transmission Control Protocol (TCP), HyperText Transfer Protocol (HTTP), and many more.
Network Security Protocols
Protocols secure data to provide authentication, data integrity, and data encryption. Examples of secure protocols include Secure Shell (SSH), Secure Sockets Layer (SSL), and Transport Layer Security (TLS).
SMTP - Simple Mail Transfer Protocol. Enables clients to send email to a mail server and enables servers to send email to other servers. POP3 - Post Office Protocol version 3. Enables clients to retrieve email from a mail server and download the email to the client's local mail application. IMAP - Internet Message Access Protocol. Enables clients to access email stored on a mail server as well as maintaining email on the server.
What type of communication will send a message to all devices on a local area network?
broadcast
Which message delivery option is used when all devices need to receive the same message simultaneously?
broadcast
Which protocol stack layer encapsulates data into frames?
data link
What process is used to receive transmitted data and convert it into a readable message?
decoding
Which logical address is used for delivery of data to a remote network?
destination IP address
What is the order of the two addresses in the data link frame?
destination MAC, source MAC
What types of standards are developed by the Electronics Industries Alliance (EIA)?
electronics and wireing
What is the name of the process of adding protocol information to data as it moves down the protocol stack?
encapsulation
What process is used to place one message inside another message for transfer from the source to the destination?
encapsulation
The right-most part of an IP address is used to identify the network that a device belongs to.
false
True or False? Data Link addresses are physical so they never change in the data link frame from source to destination.
false
Which step of the communication process is concerned with properly identifying the address of the sender and receiver?
formatting
What are two benefits of using a layered network model?
it assists in protocol design it prevents technology in one from affecting other layer
What is done to an IP packet before it is transmitted over the physical medium?
it is encapsulated in a Layer 2 frame
Which delivery method is used to transmit information to one or more end devices, but not all devices on the network?
multicast
Which type of communication will send a message to a group of host destinations simultaneously?
multicast
What is the general term that is used to describe a piece of data at any layer of a networking model?
protocol data unit
What is the purpose of protocols in data communications?
providing the rules required for a specific type of communication to occur
What is the PDU associated with the transport layer?
segment
What is the process of dividing a large data stream into smaller pieces prior to transmission?
segmentation
What is used to determine the network portion of an IPv4 address?
subnet mask
In computer communication, what is the purpose of message encoding?
to convert information to appropriate form for tansmission
Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?
transport
Frames exchanged between devices in different IP networks must be forwarded to a default gateway.
true
True or false. Standards organizations are usually vendor-neutral.
true
