Computer Networks — Test 7

Correct Answer: A. A. Rfc 1904
Explanation: The information on SNMPv2 has been split into three parts. MIB modules for SNMv2 are covered in RFC 1902. The textual conventions to be used to describe MIB modules have been formalized in RFC 1903. RFC 1904 defines SNMPv2 conformance statements for the implementation of network management standards.

Correct Answer: B. B. False
Explanation: Notification in SMlv2 is equivalent to trap in SNMPv2. In SNMPv1, trap is formally specified by an ASN.1 macro, TRAP-TYPE.

Correct Answer: C. C. Authentication, encryption
Explanation: SNMPv3 has advanced features and improved security features as compared to other versions. It authenticates and encrypts data packets sent over the network.

Correct Answer: A. A. Ietf
Explanation: IETF (Internet Engineering Task Force) is an open standards organization. It defines Internet Management standards such as SNMPv3.

Correct Answer: D. D. TCP/IP
Explanation: Transmission Control Protocol and Internet Protocol are the protocols used for managing two or more network devices in a network. It is a reliable protocol and helps in recovering after a network failure.

Correct Answer: B. B. Rfc 3411
Explanation: RFC 3411 presents an overview of SNMPv3. It defines a vocabulary for describing SNMP Management Frameworks and an architecture for describing the major portions of SNMP Management Frameworks. Whereas RFC 3410 provides an overview of SNMPv3 Framework, RFC 3412 describes message processing and dispatching for SNMP messages and RFC 3413 describes SNMPv3 applications.

Correct Answer: B. B. False
Explanation: An SNMP engine is defined with explicit subsystems that include dispatch and message-processing functions. It manages all three versions of SNMP to coexist in a management entity. This formalizes the various messages that have been in use in the earlier versions.

Correct Answer: D. D. By reordering and time delaying of message streams
Explanation: SNMPv3 has enhanced security features as compared to SNMPv1 and SNMPv2. The configuration can be set remotely with secured communication that protects against the modification of information and masquerades by using encryption schemes. It also tries to ensure against malicious modification of messages by reordering and time delaying of message streams.

Correct Answer: B. B. False
Explanation: In a dispatch subsystem of SNMP architecture, there is only one dispatcher in an SNMP engine and it can handle multiple versions of SNMP messages.

Correct Answer: C. C. Authorization
Explanation: There are three subsystems in SNMPv3 architecture. They are Dispatcher Subsystem, Message Processing Subsystem and Security and Access Control Subsystem. The access control subsystem provides access to authorization service.