Ports & Protocols
The OSI Model
WAN's
Command-Line
Troubleshooting
100

This web-related protocol uses port 80.

What is "Hypertext Transfer Protocol" or "HTTP"?

100

Services, such as e-mail and file sharing, belong to this layer.

What is "Application"?

100

The three categories of WAN connections are: packet-switched, circuit-switched, and_______.

What are "dedicated leased lines"?

100

This command displays various information about IP-based connections on a PC.

What is "netstat"?

100

The first step in a structured network troubleshooting methodology (for the Network + exam) is ______.

What is "define the problem"?

200

This protocol uses port 110.

What is "POP3"?

200

Here you'll find "logical" rather than "physical" addressing.

What is the "Network Layer"?

200

The size of an MPLS header.

What is "32 bits"?

200

To renew a DHCP lease for an IPv6 address, you need to add this after "ipconfig".

What is "/renew6"?

200

"Testing your theory or hypothesis" is which step in a structured troubleshooting methodology?

What is "the 3rd step"?

300

These are the ports used by DHCP to assign IP address information to a network device.

What are UDP ports 67 and 68?

300

This layer handles formatting data being exchanged and securing that data with encryption.

What is the "Presentation Layer"?

300

Having different upstream and downstream speeds is characteristic of this type of DSL line.

What is "asymmetric"?

300

In Unix, an entry for a host can be deleted using this command.

What is "arp -d"?

300

This is the last thing you should do when troubleshooting.

What is "create documentation" or a "post-mortem report"?

400

This protocol is used for delivering media-based data through a network.

What is "RTP"?

400

A MAC address will lead you to this layer.

What is "Data Link"?

400

This authentication protocol provides two-way authentication.

What is "MS-CHAP"?

400

This Unix command provides FQDN-to-IP-address resolution.

What is "host"?

400

Examining switches to determine the STP roles of your network's switches and ports can help identify this type of problem.

What is a "Layer 2 loop"?

500

This protocol operating on port 69 should not be taken "lightly".

What is "Trivial File Transfer Protocol" or "TFTP"?

500

Queuing up data until bandwidth is available is done at this layer.

What is "Transport"?

500

155.52 Mbps

What is the bandwidth capacity of an OC-3 network?

500

This command will reveal the names of the program that opened up a session.

What is "netstat -b"?

500

When traffic from a host is not being forwarded off its local subnet, you may be dealing with this type of problem.

What is an "incorrect default gateway"?