Chapter 15 Application Layer

DNS Hierarchy

.Top level domains com .org .au .co

How many connections are required by FTP between client and server?

2

DNS Server resource records

A - An end device IPv4 address NS - An authoritative name server AAAA - An end device IPv6 address (pronounced quad-A) MX - A mail exchange record

File Transfer protocol

A communications method for transferring data between computers on the Internet

nslookup

A utility that is used to test and troubleshoot domain name servers.

Which peer-to-peer application allows users to share pieces of many files with each other at the same time?

BitTorrent

True or false? HTTP is a secure protocol.

False

Which of the following is a feature of the Gnutella protocol?

Users can share whole files with other users.

Which statement is true about FTP?

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

DHCP

Dynamic Host Configuration Protocol IP addresses are automatically assigned to the host the IP is leased to the host for a portion of time and at some point the host may receive a different IP.

True or false? Resource sharing over SMB is only supported on Microsoft operating systems.

False

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

GET

This protocol is used by a web browser to establish a connection to a web server.

HTTP

Which three protocols or standards are used at the application layer of the TCP/IP model? (Choose three.)

HTTP GIF MPEG

Which two tasks can be performed by a local DNS server? (Choose two.)

Mapping name-to-ip addresses for internal hosts forwarding name resolution requests between servers.

Peer-to-Peer

No dedicated servers are used. Machine all share resources amongst each other on the network. computers act as both a client and a server.

Which protocol can be used to transfer messages from an email server to an email client?

POP3

This message type is used when uploading data files to a web server.

POST

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

SMB

This protocol is used by a client to send email to a mail server.

SMTP

SMB Mesages

Start, authenticate, and terminate sessions. Control file and printer access. Allow an application to send or receive messages to or from another device.

True or false? DHCP clients send a DHCP request message to available DHCP servers.

True

Which is a feature of IMAP?

it downloads a copy of the email messages leaving the original on the server

Why is DHCP for IPv4 preferred for use on large networks?

more efficient way to manage IPv4 addresses than to use a static address.

True or false? FTP data transfers take place from client to server (push) and from server to client (pull).

True

True or false? In a peer-to-peer network environment every peer can function as both a client and a server.

True

An author is uploading one chapter document from a personal computer to a file server of a book publisher. What role is the personal computer assuming in this network model?

client

What are two characteristics of the application layer of the TCP/IP model? (Choose two.)

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

True or false? The peer-to-peer networking model requires the implementation of a dedicated server for data access.

false

Which of the following is displayed by the nslookup utility?

the IP address of the end device