What is the difference between CSU DSU and a modem?

A CSU / DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line. A CSU / DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line.

What is the function of a channel service unit data service unit CSU DSU )?

A CSU / DSU ( Channel Service Unit / Data Service Unit ) is a hardware device about the size of an external modem that converts a digital data frame from the communications technology used on a local area network (LAN) into a frame appropriate to a wide-area network (WAN) and vice versa.

Are CSU DSU still used?

1 Answer. External CSU / DSUs have been disappearing, even for T-carrier, for years now, and I haven’t seen an external CSU / DSU (connected over X. 25 to the router) since about 1999 or so.

What is DSU in networking?

DSU, or Data Service Unit, is a digital communication device that works with a Channel Service Unit (CSU) to connect a local area network (LAN) to an external communication carrier service.

What is a T1 CSU DSU?

A CSU / DSU (channel service unit/data service unit) is a digital-interface device used to connect data terminal equipment (DTE), such as a router, to a digital circuit, such as a Digital Signal 1 (DS1) T1 line. A CSU / DSU is the equivalent of the modem for an entire LAN.

What is a CSU school?

The California State University ( Cal State or CSU ) is a public university system in California. With 23 campuses and eight off-campus centers enrolling 484,300 students with 26,858 faculty and 25,305 staff, CSU is the largest four-year public university system in the United States.

What is DTE and DCE in networking?

The term DTE Data Terminal EQUIPMENT is used to describe the initiator or controller of the serial connection, typically the computer. The term DCE Data Communications EQUIPMENT describes the device that is connected to the DTE device such as a modem.

What is DTE in networking?

Data terminal equipment ( DTE ) is an end instrument that converts user information into signals or reconverts received signals. Usually, the DTE device is the terminal (or a computer emulating a terminal), and the DCE is a modem or another carrier-owned device.

Which public WAN technology provides security by using encrypted tunnels over Internet connections group of answer choices?

21 Cards in this Set

What is a disadvantage of leased lines?	high cost
Which public WAN technology provides security by using encrypted tunnels over Internet connections?	VPN
What are two common types of circuit-switched WAN technologies? (Choose two.)	PSTN ISDN

What is CSU in law enforcement?

Crime Scene Unit, a forensic in some police groups this refers to crime scene investigators who respond to a crime scene.

What device acts as a high speed modem for a LAN?

What device acts as a high-speed modem for a LAN? equipment ( DCE ).

What does the NAT function do in a modem router?

Stands for “Network Address Translation.” NAT translates the IP addresses of computers in a local network to a single IP address. This address is often used by the router that connects the computers to the Internet. The router can be connected to a DSL modem, cable modem, T1 line, or even a dial-up modem.

Which of the following combines several communication streams into a single faster communication stream?

Cards

Term Analog Signal	Definition A signal, represented by a sine wave, that varies over time continually and smoothly.
Term Which of the following combines several communication streams into a single faster communication stream? a. Multiplexing b. Demultiplexing c. DSU d. CSU	Definition a. Multiplexing