I recently sat CompTIA’s Network+ exam. I’ve been meaning to do this for a while, and as I mentioned in 2012, passing this exam would give me 2 new qualifications: A+ ce and Network+ ce. I did pass the exam, but the CE side of it was sufficiently complex to warrant a separate blog post.
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CWTS
Last month, I took the Certified Wireless Technology Specialist (CWTS) exam. This is issued by CWNP, who are similar to CompTIA, i.e. it’s a vendor-neutral exam rather than being based around specific technology (e.g. Cisco access points). The CWNP website says: “The CWTS certification validates the knowledge of enterprise WLAN sales and support professionals who …
Installing dd-wrt on a Linksys WRT320N wireless router
Back in 2011 I switched ISPs to A&A, primarily because they support native IPv6. Incidentally, 3 years on I see that you still can’t get IPv6 from Zen, so I made the right choice by switching. Windows has had IPv6 support included by default since 2006 (i.e. Vista onwards), so the missing piece of the …
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CompTIA exams
Back in 2007, I passed the CompTIA A+ exams. Since then, there have been a few changes to the way these exams work. Unfortunately, CompTIA haven’t done a very good job of explaining it all; it makes volume licensing seem clear and simple by comparison! In brief, if you currently have the A+, Network+, or …
VDSL
I’ve recently swapped ISP, from Zen to Andrew & Arnold. More specifically, I had an ADSL line from Zen, and I now have a VDSL line from A&A; this uses FTTC (Fibre To The Cabinet), which BT have just deployed in my local exchange. I’m happy with the new service, and it’s definitely faster than …
Scareware and Spamhaus
Scareware is normally just a minor nuisance, assuming that you know how to get rid of it without paying any money. However, I’ve now come across a new wrinkle: it can get you blacklisted, so that you can’t send email.
Integer overflow
I’ve been looking at a server that has Progress OpenEdge installed (10.1C). I’ve found a bug in this recently, and it’s useful to be aware of this if you use the same software. More generally, it’s something to be aware of if you write any computer programs, so that you won’t make the same mistake.
Word Recovery
I’ve come across a few Word documents that have got corrupted, so I get an error message when I try to open them:
Protecting passwords
When I created accounts with Facebook and LinkedIn, both websites asked me for my email password to help me find people I know. The idea is that they can log into my email account, go through my address book, then search their own database for people with matching email addresses. That would certainly be convenient, …
RAIDers of the lost sleep
Early in my career, I noticed an error when I rebooted a server, saying that one of the RAID drives had failed. The server was able to keep running, but the drive needed to be replaced, so one of my colleagues came over with a new one. The drive was hot-swappable, so he was quite …