Q. What is the decimal notation of subnet mask of 255.255.255.0
A. /24
Q. What type of DNS record is associated with email servers
a. MX /Mail Exchanger and Reverse DNS (99% will miss Reverse DNS unless they have ran their own mail server)
Q. If I build a Ipsec vpn from Site 1 to Site 2 to Site 3, Can I ping a host on site 3 from site 1.
A. No. Ipsec creates rules to join networks. Generally you can't route traffic between tunnels.
Q. Most managed switchs us a technique called spanning tree. A lot of embedded devices will miss DHCP when because their boot up time is so fast that the port is not alive before the switch determines that you do not have a loop back condition. What is the correct way to solve this.
A. In some switches they have a feature called port fast, turn this on ports that have embedded devices. In some middle ground switches you have to disable spanning tree on that port or even the complete switch.
That's a few. They might be a bit beyond any junior person but if you want someone that really knows their stuff I would get a bit harder than these.
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From: kclug-bounces@kclug.org [mailto:kclug-bounces@kclug.org] On Behalf Of Garrett Goebel Sent: Wednesday, November 16, 2005 8:15 AM To: kclug@kclug.org Subject: Suggestions for interview questions
What type of networking questions would you suggest to weed out interview candidates during a 15 minute phone conversation? The emphasis would not be on any particular platform, but rather to discover if the candidate had a general understanding of tcpip networking, hardware, infrastructure, security, nat, firewalls, vpns, ipsec, ssl, dns, hubs, switches, routers, etc.
Example:
Q: Can you name a protocol responsible for dynamic IP address assignment? A: BOOTP or DHCP
On Wednesday 16 November 2005 15:04, Daniel Siemens wrote:
Q. What is the decimal notation of subnet mask of 255.255.255.0 A. /24
I almost always forget if it's /8 or /24... XD
Q. What type of DNS record is associated with email servers a. MX /Mail Exchanger and Reverse DNS (99% will miss Reverse DNS unless they have ran their own mail server)
Trick question. And even those who have run their own mail servers could miss it, since most people don't have control over those... the answer should probably note that 'PTR' is the technical term for a reverse DNS lookup.
Q. If I build a Ipsec vpn from Site 1 to Site 2 to Site 3, Can I ping a host on site 3 from site 1. A. No. Ipsec creates rules to join networks. Generally you can't route traffic between tunnels.
ipsec is a solution... wouldn't it be better to base the questions on concepts? Personally, I use PPP & SSH for VPNs...
On 11/17/05, Luke-Jr luke@dashjr.org wrote:
Q. What type of DNS record is associated with email servers a. MX /Mail Exchanger and Reverse DNS (99% will miss Reverse DNS unless they have ran their own mail server)
MX is the answer. "DNS record" is singular. If the Q asked for "records are" then MX, A, PTR and TXT should all be there. Extra points if they explain that MX records should resolve to A records, not CNAME records. Advanced question: "Why is having a MX that points to a CNAME a problem?" Extra points if they know DJB's middle name.
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Daniel Siemens -
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Luke-Jr