SS7 course

How many abstraction layers does OSI model has ?

• 4

• 7

• 6

Can an OSI Model abstraction layer exist without the layer above it ?

• YES

• NO

What are the Main Functions of a protocol? (select all that are valid)

• Encapsulation

• Sequence Numbering

• Error Logging

• Connection Control

How else SS7 set of protocols is referred to ?

• CAS (channel associated signaling)

• CCS (common channel signalling)

• Cell Signalling

How are the first 3 layers of SS7 stack called ?

• MTP3

• MTP

• NSP

What OSI layers correspond to SS7 TCAP ?

• Session & Presentation

• Transport & Session

• Session only

What parameters are specific to SCCP layer ? (select all that are valid)

• Global Title

• SI (Service Indicator)

• SSN (Subsystem number)

• PC (point code)

Which protocols are TCAP users ? (select all that are valid)

• MAP

• ISUP

• CAMEL

• INAP

What type of message enconding INAP protocol uses?

• XML

• ABNF

• ASN.1

• JSON

What protocol is used for IN Roaming Calls ?

• INAP

• CAMEL

• MAP