Book I used for the JNCIA and JNCIS-ENT Exam:
Along with Juniper we're also rolling out our own NGFW's that rivals many competitors such as Palo Alto. Not only have I had an opportunity to get more hands on experience with our firewalls, I have the chance to administer Juniper SRX's and Palo Alto's which has been very challenging but engaging.
In my past roles I never had much of a chance to deal with network load balancers which always bugged me. While I played around with Cisco ACE's (now extinct) I didn't find them very intuitive with a weird learning curve. This year I've had the chance to deploy and implement virtual F5's using their LTM and GSLB modules. I only touched the GSLB (DNS Load Balancing) very lightly but I did get some great experience with LTM (De-facto Server Load Balancing).
To end the year off, our first little one arrived, which meant that I didn't want to dig to deep into the certification world right now. Instead I'm now diving into Python so that I can script some of the repeatable stuff I do on a daily, weekly, or monthly basis. I'm very noobish but with a help of a fellow colleague, we're starting to make some useful stuff.
Check out my github link to the right ---> I'll be keeping this updated as time goes on and my skill level increases. Hope everyone has a happy holidays, I'm excited for what the next year will bring!