Cisco Chapter 10

The application layer of the TCP/IP model performs the functions of what three layers of the OSI model?

Session Presentation Application

Which protocol is used by a client to communicate securely with a web server?

HTTPS

Which application layer protocol uses message types such as GET, PUT, and POST?

HTTP

What are two characteristics of the application layer of the TCP/IP model?

the creation and maintenance of dialogue between source and destination applications closest to the end user

What is the function of the Nslookup utility?

to manually query the name servers to resolve a given host name

What part of the URL, http://www.cisco.com/index.html, represents the top-level DNS domain?

.com

What is an example of network communication that uses the client-server model?

A workstation initiates a DNS request when the user types www.cisco.com in the address bar of a web browser.

Which layer in the TCP/IP model is used for formatting, compressing, and encrypting data?

Application

What do the client/server and peer-to-peer network models have in common?

Both models support devices in server and client roles.

What is true about the Server Message Block protocol?

Clients establish a long term connection to servers.

A manufacturing company subscribes to certain hosted services from its ISP. The services that are required include hosted world wide web, file transfer, and e-mail. Which protocols represent these three key applications?

FTP HTTP SMTP

What message type is used by an HTTP client to request data from a web server?

GET

When retrieving email messages, which protocol allows for easy, centralized storage and backup of emails that would be desirable for a small- to medium-sized business?

IMAP

What is an advantage for small organizations of adopting IMAP instead of POP?

Messages are kept in the mail servers until they are manually deleted from the email client.

Which application layer protocol is used to provide file-sharing and print services to Microsoft applications?

SMB

Which statement is true about FTP?

The client can download data from or upload data to the server.

Which three statements describe a DHCP Discover message?

The destination IP address is 255.255.255.255. The message comes from a client seeking an IP address. All hosts receive the message, but only a DHCP server replies.

Which phrase describes an FTP daemon?

a program that is running on an FTP server

Which two tasks can be performed by a local DNS server?

mapping name-to-IP addresses for internal hosts forwarding name resolution requests between servers