Communication And Network Security (ch 11-12)

Question 1

what are the layers of the OSI Model?

Answer 1

Layer 7 - Application Layer
Layer 6 - Presentation Layer
Layer 5 - Session Layer
Layer 4 - Transport Layer
Layer 3 - Network Layer
Layer 2 - Datalink Layer
Layer 1 - Physical Layer

Question 2

What does the PDU (Protocol Data Unit) consist of?

Answer 2

The PDU consists of the data transmitted and any headers and trailers that have been added

Question 3

What is the name for the PDU payload at each level of the OSI model?

Answer 3

Layer 7 - Data
Layer 6 - Data
Layer 5 - Data
Layer 4 - Segment
Layer 3 - Packet
Layer 2 - Frame
Layer 1 - Bit

Question 4

What form of interference is generated by a power differential between hot and ground wires?

Answer 4

cross talk noise

Question 5

What mechanism is used to support the exchange of authentication and authorization details between systems, services, and devices?

Answer 5

SAML is an open standard data format based on XML for the purpose of supporting the exchange of authentication and authorization details between systems, services, and devices. A biometric is an authentication factor, not a means of exchanging authentication information. Two-factor authentication is the use of two authentication factors. LDAP is a protocol used by directory services and is not directly related to authentication.