Chapter 10: Application layer
What is an advantage of SMB over FTP?
SMB clients can establish a long-term connection to the server.
Session Layer
used to arrange the communication between source and destination applications and responsible for the state of the conversation
What is true about a client-server network?
The network includes a dedicated server.
A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access?
DNS server, and default gateway
What is a common protocol that is used with peer-to-peer applications such as WireShare, Bearshare, and Shareaza?
Gnutella
Which three protocols or standards are used at the application layer of the TCP/IP model?
HTTP, MPEG, and GIF
HTTP
Hypertext Transfer Protocol - used to request and transfer hypertext data between clients and servers
Why is DHCP preferred for use on large networks?
It is a more efficient way to manage IP addresses than static address assignment.
Which protocol can be used to transfer messages from an email server to an email client?
POP3
URL
Uniform Resource Locator - the "friendly" address that is used in a web browser bar and that corresponds to the IP address of the site
On a home network, which device is most likely to provide dynamic IP addressing to clients on the home network?
a home router
IMAP
a protocol that is used in email retrieval It leaves copy of messages on the server.
POP
a protocol that is used to retrieve email from a server It deletes messages from the server by default.
DHCP
a service that is used in networks to automatically configure IP addresses on devices
Nslookup
a tool used to query the DNS system to find the IP addresses for domain names, and vice versa
Client-Server Network
an architecture that allows network clients to request services directly from network servers
Which TCP/IP model layer is closest to the end user?
application
Peer-to-Peer Network
consists of peer machines that exchange data with each other without a dedicated server
Which command is used to manually query a DNS server to resolve a specific host name?
nslookup
A wired laser printer is attached to a home computer. That printer has been shared so that other computers on the home network can also use the printer. What networking model is in use?
peer-to-peer (P2P)
Application Layer
provides data exchange and the interface between the system and the network
Which three layers of the OSI model provide similar network services to those provided by the application layer of the TCP/IP model?
session layer, application layer, and presentation layer
What type of information is contained in a DNS MX record?
the domain name mapped to mail exchange servers
Presentation Layer
the layer in the OSI model that is responsible for formatting, compressing, and encrypting data
Domain Name
the name that is used to uniquely identify a website and is used instead of the IP address
SMTP
the protocol responsible for sending email
In FTP transactions, an FTP client uses the pull method to download files from an FTP server.
true
