CMMI,.NET,JAVA,Networking,Oracle,SQL Server, Testing Questions And Answers

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1. What are 10Base2, 10Base5 and 10BaseT Ethernet LANs
10Base2--An Ethernet term meaning a maximum transfer rate of 10 Megabits per second that
uses baseband
signaling, with a contiguous cable segment length of 100
meters and a maximum of 2 segments.
10Base5--An Ethernet term meaning a maximum transfer rate of 10 Megabits per second that
uses baseband
signaling, with 5 continuous segments not exceeding 100
meters per segment.
10BaseT--An Ethernet term meaning a maximum transfer rate of 10 Megabits per second that
uses baseband
signaling and twisted pair cabling.

2. Explain the difference between an unspecified passive open and a fully specified
passive open
An unspecified passive open has the server waiting for a connection request from a client. A fully
specified passive
open has the server waiting for a connection from a
specific client.
3. Explain the function of Transmission Control Block
A TCB is a complex data structure that contains a considerable amount of information about each
connection.
4. Explain a Management Information Base (MIB)
A Management Information Base is part of every SNMP-managed device. Each SNMP agent has
the MIB database that
contains information about the device's status, its
performance, connections, and configuration. The MIB is queried by SNMP.
5. Explain anonymous FTP and why would you use it
Anonymous FTP enables users to connect to a host without using a valid login and password.
Usually, anonymous FTP
uses a login called anonymous or guest, with the
password usually requesting the user's ID for tracking purposes only. Anonymous FTP is used to
enable a large number
of users to access files on the host without having
to go to the trouble of setting up logins for them all. Anonymous FTP systems usually have strict
controls over the areas
an anonymous user can access.
6. Explain a pseudo tty
A pseudo tty or false terminal enables external machines to connect through Telnet or rlogin.
Without a pseudo tty, no
connection can take place.
7. Explain REX
What advantage does REX offer other similar utilities
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