SWEG 12

Which application protocols are used to by clients to retrieve email messages? (Choose two.) DNS SMTP POP IMAP HTTP FTP

POP IMAP

What protocol is used provide remote access to servers and networking devices.

Secure Shell (SSH)

What way can I make HTTP secure?

Send a requests for secure HTTP to port 443 Secure Shell (SSH) These requests use https in the site address in the browser, rather than http.

Simple Mail Transfer Protocol (SMTP)

Sends email messages and attachments from clients to servers and from servers to other email servers.

Network Application Services

Some of the protocols used for internet services are DNS, SSH, SMTP, POP, IMAP, DHCP, HTTP, and FTP. Each of these services relies on protocols from the TCP/IP protocol suite in order to reliably communicate the information between the clients and the servers.

Hypertext Transfer Protocol (HTTP)

Used by web browsers to request web pages and web servers to transfers the files that make up web pages of the World Wide Web.

What is the File Transfer Protocol (FTP) used to do

Used for interactive file transfer between systems.

Dynamic Host Configuration Protocol (DHCP)

Used to automatically configure devices with IP addressing and other necessary information to enable them to communicate over the internet.

What does a DNS server table associats hostnames in a domain with?

Corresponding IP addresses.

Which application protocol is used to automatically configure IP addressing information? DNS IMAP DCHP FTP

DHCP

Which application protocol is used to resolve web addresses to an IP address? DNS SSH DHCP HTTP

DNS

Domain Name System

DNS provides a way for hosts to use a domain name to request the IP address of a specific server. DNS names are registered and organized on the internet within specific high level groups, or domains. Some of the most common high level domains on the internet are .com, .edu, and .net. A DNS server contains a table that associates hostnames in a domain with corresponding IP addresses. When a client has the name of a server, such as a web server, but needs to find the IP address, it sends a request to the DNS server on port 53. The client uses the IP address of the DNS server configured in the DNS settings of the host IP configuration..

What protocol resolves internet names to IP addresses.

Domain Name System (DNS)

HTTP

Governs how the information is transmitted between the client (source) and the webserver. (destination)

What does the HyperText Markup Language (HTML) coding do?

H.T.M.L tells the browser how to format the web page and what graphics and fonts to use. HTML is the most commonly used language. Coding used to display the webpage

What is a huge benefit of the HTTP protocol and HTML standards?

HTTP protocol and HTML standards allow servers and clients from many different manufacturers to work together seamlessly

Post Office Protocol (POP)

Used by email clients to retrieve email and attachments from a remote server.

True or False: Each server is assigned to a unique IP address

True

True or False: HTTP protocol is not a secure protocol

True

Internet Message Access Protocol (IMAP)

Used by email clients to retrieve email and attachments from a remote server.

Describe what happens when client needs to fina a web address

When a client has the name of server, such as a web server, but needs to find the IP address, it sends a request to the DNS server on port 53. The client uses the IP address of the DNS server configured in the DNS settings of the host IP configuration. When the DNS server receives the request, it checks its table to determine the IP address associated with that web server. If the local DNS server does not have an entry for the requested name, it queries another DNS server within the domain. When the DNS server learns the IP address, that information is sent back to the client. If the DNS server cannot determine the IP address, the request will time out and the client will not be able to communicate with the web server.

Domain Name System (DNS)

associating a name with an IP address. provides a way for hosts to use this name to request the IP address of a specific server, as shown in the figure. DNS names are registered and organized on the internet within specific high level groups, or domains. Some of the most common high level domains on the internet are .com, .edu, and .net. The figure depicts an end user using a web browser to navigate https://www.cisco.com. The topology has four clouds connected by routers. The I S P 1 cloud has a router, switch and D N S server. The I S P 2 cloud only shows a router. The Internet cloud connects I S P 1 and I S P 2 clouds. The Cisco Network cloud has a router, switch and a web server. The Cisco Network cloud is connected to the Internet cloud through the I S P 2 cloud.