The example instruction validator 650 of the illustrated example of FIG. 6 validates and/or otherwise verifies that the instructions retrieved from the repository 134 by the instruction retriever 640 are valid. In some examples, the example repository 134, when providing the instructions, additionally provides a checksum (e.g., an MD5 hash) of the instructions. The example instruction validator 650 computes a checksum of the retrieved instructions and compares the computed checksum to the checksum provided by the repository 134. If the checksums do not match, the instructions are not valid and should not be executed (as unexpected results could occur). While in some examples the example instruction validator 650 validates based on a checksum, any other approach to validating whether the instructions are valid for execution at the component server 330 may additionally or alternatively be used. For example, the example instruction validator 650 may verify that any pre-requisites of the instructions have already been installed and/or are otherwise available for execution of the instructions, the example instruction validator 650 may perform a virus scan on the instructions, the example instruction validator 650 may verify a syntax and/or structure of the instructions, etc.
