Exam 6: Data Communications

A(n)________ is a special-purpose computer that receives and transmits messages on the LAN.

The WNICs operate according to the 802.3 protocol and connect to a router.

DSL stands for digital signal line and operates on dedicated cable lines provided by the ISP.

The ACL encodes the rules which contain the firewall's permitted and forbidden addresses.

Vendors develop and maintain leased lines and networks that are called ________.

Which of the following transmission lines offers data transmission speeds of up to 40 Gbps?

The most common connection cable is UTP.

ISPs collect money from their customers and pay access fees and other charges on your behalf.

________ is a wireless protocol used to communicate over short distances.

Which of the following applies to asymmetric encryption?

IEEE 802.3 is also known as ________.

If a business needs high speed in both directions they should select ________ modems.

________ modems modulate in such a way that they do not interfere with TV signals,even though they use the same lines.

Symmetrical digital subscriber lines offer the same fast speed for uploads and downloads.

VPN uses software encryption to secure data.

The router is the access point into the PSDN.

New computers today come with onboard NICs.

A router is a special-purpose computer that moves network traffic from one node on a network to another.

Frame Relay and ATM are the common protocols used in PSDNs.

_____ communications are secure,even though they are transmitted over the Internet.