CCNA CH 4 (APPLICATION LAYER)

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 statement describes a characteristic of FTP?

It is an example of a protocol based on the client/server model.

Select three protocols that operate at the Application Layer of the OSI model. (Choose three.)

POP3 DHCP FTP

What is a characteristic of a peer-to-peer network?

Resources are decentralized on the network and can be shared among connected devices. There is no server.

Which address is used by the router to direct a packet between networks?

Destination IP Address

Which protocols are TCP/IP application layer protocols?

FTP SMTP

Which two statements describe the FTP protocol? (Choose two.)

In passive data connections, the FTP client initiates the transfer of data. It requires two connections between client and server.

A user accessed the game site www.nogamename.com last week. The night before the user accesses the game site again, the site administrator changes the site IP address. What will be the consequence of that action for the user?

The user will access the site without problems.

Refer to the exhibit. What command was used to resolve a given host name by querying the name servers?

nslookup

What are two characteristics of peer-to-peer networks? (Choose two.)

resource sharing without a dedicated server decentralized resources

Which three layers of the OSI model provide similar network services to those provided by the application layer of the TCP/IP model? (Choose three.)

session layer application layer presentation layer

A DHCP-enabled client PC has just booted. During which two steps will the client PC use broadcast messages when communicating with a DHCP server? (Choose two.)

DHCPDISCOVER DHCPREQUEST

Match the purpose with its DHCP message type

DHCPREQUEST - a message that is used to identify the explicit server and lease offer to accept DHCPDISCOVER - a message that is used to locate any available DHCP server on the network DHCPOFFER - a message that is used to suggest a lease to a client DHCPACK - a message that is used to acknowledge that the lease is successful

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

FTP HTTP SMTP

What are two characteristics that describe an FTP connection?

Files can be downloaded from or uploaded to the server. The first connection established is for traffic control and the second is created for transfer of a file.

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

HTTP

Fill in the blank. What is the acronym for the protocol that is used when securely communicating with a web server?

HTTPS

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

Messages are kept in the mail servers until the client manually deletes them.

Which protocol is used by e-mail servers to communicate with each other?

SMTP

Which three statements describe a DHCP Discover message? (Choose three.)

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 three statements describe a DHCP Discover message? (Choose three.)

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.

What is the correct encapsulation order when data is passed from Layer 1 up to Layer 4 of the OSI model?

bits, frames, packets, segments

Which is a function of the transport layer of the OSI model?

delivers data reliably across the network using TCP

What is a characteristic of a peer-to-peer network?

hosts act as both a client and a server within the same communication applications require that each end device proved a user interface and run a background service resource sharing is decentralized

Which two functions are provided by the upper layers of the OSI model? (Choose two.)

initiating the network communication process encrypting and compressing data for transmission

Which DNS server in the DNS hierarchy would be considered authoritative for the domain name records of a company named netacad?

netacad.com