C N+ U10 Ports & Protocols

A network protocol allows devices to communicate with each other, whether or not they are connected.

• True

• False

A closed (proprietary) protocol is one that is owned by a particular company and limited to a particular company's products.

• True

• False

An open (nonproprietary) protocol is one that is owned by a particular company and limited to a particular company's products.

• True

• False

The DOD model’s ‘Host-to-Host’ layer was replaced by the OSI model’s ‘Transport’ layer.

• True

• False

The DOD model’s ‘Internet’ layer was replaced by the OSI model’s ‘Data Link’ layer.

• True

• False

The OSI model has seven layers, and the DoD has four. At which layer does SMTP work in both models?

• Network

• Transport

• Session

• Application

• Internet

You need to have secure communications using HTTPS. What port number is used by default?

• 69

• 23

• 21

• 443

You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?

• SMTP

• SNMP

• DHCP

• ARP

What protocol is used to find the hardware address of a local device?

• RARP

• ARP

• IP

• ICMP

You need to have a connection to run applications that are installed on only your desktop computer at your office. Which protocol will provide a GUI interface to your work computer?

• Telnet

• FTP

• RDP

• IMAP

• SMTP