Chapter Questions
Discuss the difference between interactive and remote batch terminals with respect to their utilization.
Discuss the difference between RO, KSR and ASR terminals.
What is a 'teletype' compatible terminal? Why is the use of the word 'teletype' in the first portion of this question actually improper?
Discuss the relationship between fixed control logic, microprocessors and dumb and intelligent terminals.
How does a terminal recognize received data bits to include the transition in the state between bits?
Discuss two techniques used to increase the print quality of a dot matrix printer.
Why are ASR and KSR teletype terminals limited to providing an elementary editing capability?
What is the purpose of a character display attribute?
What does the term 'teletype-compatible display' signify? Contrast the meaning of that term to 'full-screen ASCII'.
Discuss the importance of addressability and memory with respect to synchronous terminals transmitting on a multidrop line.
What is the difference between local and remote control units in an IBM 3270 Information Display System?
Discuss some of the functions that must be performed by a personal computer emulating a 3270 terminal.
How can a PC obtain the display capability of a specific type of 3270 terminal?
Discuss two functions performed by a network interface card.
What is the difference between a repeating hub and a switching hub?
Assume 20 active users are connected to a 10 Mbps shared-media LAN. What is the average transmission rate per network user?
Assume that a 12 port switching hub operates at 10 Mbps . What is the maximum throughput through this switch?
Assume the 12 port switch in question 17 has two servers connected to different switch ports. What is the maximum client-server data transfer capability of the switching hub?
What is the difference between a client-server and a peer-to-peer LAN?
Discuss the role of four types of LAN servers.
Compare and contrast FDM and TDM operations.
What is the significance of the use of an idle bit or character in TDM operations?
What is flow control? Why is it important in STDM and ITDM operations?
Discuss the differences in hardware between a concentrator and multiplexer with respect to the communications applications they can support.
How does a repeater operate?
What is the difference between a repeater and a bridge with respect to data transmitted on a LAN?
What do the terms filtering, forwarding and flooding refer to with respect to bridges?
Where do the addresses that bridges use as a decision criterion come from?
Discuss the general operation of a router with respect to the use of network addresses.
Discuss several functions performed by a gateway used to connect a LAN to an IBM mainframe.