I would like to solicit other's opinions on racking Cisco 2960 switches & 2811 routers. What kind of dead space is needed/required/optimal between devices mounted in a rack? Are fans required to circulate air, or are the little fans in each device ...

In all that I have read in preparation for the CCNA, I have not seen any explanation about *why* the various protocols are assigned the values stated. RIP has a value of 120, OSPF has a value of 110, & EIGRP has a value of 90. Numerically, this ran...

If I have a 802.11g access point which has 802.11a, b, & g clients attached, do all transmissions run at the lowest common denominator (802.11a) for *all* conversations, or only for those conversations specifically involving the 802.11a client(s)? I...

I have a 2801 router which I am using both for NAT/PAT & DHCP. I have searched unsuccessfully for information on what is required to forward lease assignments to a local DNS server to implement dynamic DNS.Any information you can share would be grea...