0 — Test 315

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.

Correct Answer: A. A. It converts the xml pdu to snmp pdu
Explanation: An SNMP security management architecture that is policy-based is composed of several components. XML interpreter converts the XML PDU to SNMP PDU. It then transfers these SNMP PDUs to other applications.

Correct Answer: B. B. Command generator
Explanation: SNMPv3 formally defines five types of applications. They are command generator, command responder, notification originator, notification receiver, and proxy forwarder. A command generator application is used to generate get-request, get-next-request, get-bulk, and set-request messages.

Correct Answer: A. A. Access control
Explanation: Access control is a security technique that allows users the access and also grants them the permission to make necessary changes in the data. The access control is divided majorly into two types. Those are: 1) Physical access control and 2) Logical access control.

Correct Answer: B. B. False
Explanation: Four type of threats exist to network management information while it is being transported from one management entity to another. Those are: (1) modification of information, (2) masquerade, (3) message stream modification, and (4) disclosure.

Correct Answer: B. B. Vacm (view-based access control model)
Explanation: In SNMPv3 access control has been made more flexible and secure. VACM defines a set of services that an application in an agent can use to validate command requests and notification receivers. Thus, VACM defines collections of data, groups of users of the data, and access statements.