Achieving these requires use of the previously mentioned quality components and good workmanship, plus appropriate tools for the job. Let's look at each of these as they apply to the subscriber drop. One of the first places to start when selecting drop components is the cable itself. At the very least, all cables must be bonded foil types. All of the major cable manufacturers offer optional corrosion-inhibiting compounds, which you need to use for extra insurance against moisture damage.
Passives are another story altogether.
For years, we've generally used the cheapest drop passives available, but these simply aren't good enough in most cases. One particular splitter design is fairly common, but it does not provide good RF shielding. You're better off spending a few cents more for splitters that have their covers crimped on, soldered or press-fit before the bead of weatherproofing is applied. Hardware may seem like a no-brainer, but a closer inspection of what's available will show that some is very good, and some isn't. For long-term reliability and drop longevity, pay a little more for the better hardware.