____ Incorporates Layered Communications Corresponding to the OSI Model's Physical

Q10: N-ISDN is the most commonly installed version

Q11: There is/are _ demand channel(s)in BRI ISDN.<br>A)4<br>B)3<br>C)2<br>D)1

Q12: PAP is used to both authenticate and

Q13: Which is not true about X.25?<br>A)It is

Q14: The SONET interface is called a DQDB,

Q16: _ is an older flow control technique

Q17: The X.25 _ layer governs physical and

Q18: _ is a cell-based data transmission technology

Q19: Before transmitting data, ADSL checks the telephone

Q20: Frame relay does not use a layer