Simple Network Management Protocol (SNMP) is an Internet-standard protocol for managing devices on IP networks. Devices that typically support SNMP include routers, switches, servers, workstations, printers, modem racks, and more. It is used mostly in network management systems to monitor network-attached devices for conditions that warrant administrative attention. SNMP is a component of the Internet Protocol Suite as defined by the Internet Engineering Task Force (IETF).
SNMP V3
Although SNMPv3 makes no changes to the protocol aside from the addition of cryptographic security, it looks much different due to new textual conventions, concepts, and terminology. SNMPv3 primarily added security and remote configuration enhancements to SNMP.
Security has been the biggest weakness of SNMP since the beginning. Authentication in
SNMP Versions 1 and 2 amounts to nothing more than a password (community string) sent in clear text between a manager and agent. Each SNMPv3 message contains security parameters which are encoded as an octet string. The meaning of these security parameters depends on the security model being used.
SNMPv3 provides important security features:
Confidentiality - Encryption of packets to prevent snooping by an unauthorized source.
Integrity - Message integrity to ensure that a packet has not been tampered with in transit including an optional packet replay protection mechanism.
Authentication - to verify that the message is from a valid source.
The following answers are incorrect:
UDP
SNMP can make use of the User Datagram Protocol (UDP) protocol but the UDP protocol by itself is not use for network monitoring.
SNMP V1
SNMP version 1 (SNMPv1) is the initial implementation of the SNMP protocol. SNMPv1 operates over protocols such as User Datagram Protocol (UDP), Internet Protocol (IP), OSI
Connectionless Network Service (CLNS), AppleTalk Datagram-Delivery Protocol (DDP), and Novell Internet Packet Exchange (IPX). SNMPv1 is widely used and is the de facto network-management protocol in the Internet community.
SNMP V2
SNMPv2 (RFC 1441-RFC 1452), revises version 1 and includes improvements in the areas of performance, security, confidentiality, and manager-to-manager communications.
It introduced GetBulkRequest, an alternative to iterative GetNextRequests for retrieving large amounts of management data in a single request. However, the new party-based security system in SNMPv2, viewed by many as overly complex, was not widely accepted.
The following reference(s) were/was used to create this question:
http://en.wikipedia.org/wiki/Simple_Network_Management_Protocol
Harris, Shon (2012-10-18). CISSP All-in-One Exam Guide, 6th Edition (p. 587). McGraw-
Hill. Kindle Edition.
Hernandez CISSP, Steven (2012-12-21). Official (ISC)2 Guide to the CISSP CBK, Third
Edition ((ISC)2 Press) (Kindle Locations 7434-7436). Auerbach Publications. Kindle
Edition.

The logic was that since it took a long time to fetch an instruction from memory relative to the time required to execute that instruction in the CPU, then the number of instructions required to implement a program should be reduced. This reasoning naturally resulted in densely coded instructions with more decode and execution cycles in the processor. This situation was ameliorated by pipelining the instructions wherein the decode and execution cycles of one instruction would be overlapped in time with the fetch cycle of the next instruction.
*Answer "Reduced Instruction Set Computer (RISC)", RISC, evolved when packaging and memory technology advanced to the point where there was not much difference in memory access times and processor execution times. Thus, the objective of the RISC architecture was to reduce the number of cycles required to execute an instruction. Accordingly, this increased the number of instructions in the average program by approximately 30%, but it reduced the number of cycles per instruction on the average by a factor of four. Essentially, the RISC architecture uses simpler instructions but makes use of other features such as optimizing compilers to reduce the number of instructions required and large numbers of general purpose registers in the processor and data caches.
*The superscalar processor, answer "Superscalar processor",
allows concurrent execution of instructions in the same pipelined stage. A scalar processor is defined as a processor that executes one instruction at a time. The term superscalar denotes multiple, concurrent operations performed on scalar values as opposed to vectors or arrays that are used as objects of computation in array processors.
*For answer "Very-Long-Instruction-Word (VLIW) processor" multiple, concurrent operations are performed in a single instruction. Because multiple operations are performed in one instruction rather than using multiple instructions, the number of instructions is reduced relative to those in a scalar processor. However, for this approach to be feasible, the operations in each VLIW instruction must be independent of each other.