30) 157.21.36.121 UNIX Product
157.51.25.110 Product developer
Above is a Hosts file entry.When you say "ftp product" you get attached to the ftp server. But when you say "FTP 157.51.25.110" you can t reach it.Why? INVALID FTP SERVER S IP.... You have to know how the HOSTS file works.....
31) How will you log on to a Domain controler which is in another domain and for that what entries do you require at your Workstation s lmhosts file? (PDC and BDC) #PRE #DOM
32) Why a workstation is not making a broadcast even when it can t resolve through other methods? P-NODE
My tips:
Know all the TCP/IP utilities: arp, netstat, nbtstat, ipconfig, tracert, ping - don t worry about switches, just know what they are each used for.
Know the differences betweem primary, secondary, fowarding and cache-only dns servers.
Know when WINS, WINS proxy, DHCP and DHCP relay should be used.
Know the NETBIOS name resoluition modes (h, b, m, p).
Know how push and pull replication works on WINS.
Know how to configure DHCP pretty well.
Know the syntax of both LMHOSTS and HOSTS.
Know when to use WINS and when to use DNS.
MEMORIZE the subnet table!
Valid Subnets ===> Subnet Mask
254 ===> 255
126 ===> 254
62 ===> 252
30 ===> 248
14 ===> 240
6 ===> 224
2 ===> 192
There are up to 5 questions and are easy if you know the table.
Don t worry about fancy subnetting formulas, save your self some time.
Know how to calculate the # of hosts per subnet ((2^#bits)-2), i.e. 255.255.240.0,11111111.11111111.11110000.00000000 = # of zero-bits = 12
So, ((2^12)-2)= 4,094 hosts.
Know how to use the route add command.
Know what lpr, lpd and lpq are for.
Know how to install a TCP/IP printer on NT.
Know how to configure a RAS server as a gateway to the internet and the clients on the network.
Learn the format of the LMHOSTS file(#PRE #DOM).
Know how WINS clients communicate with WINS servers and understand the WINS database replication process.
Be familiar with DHCP scope options and which can be overridden by the client. Understand how to make NT route packets, how to make NT dynamically update routes, and how to provide DHCP resiliency across routers.
Brush up on TCP/IP printing using lpr.
Be familiar with SNMP installation on NT.
Be familiar with Hosts IDs and Networks IDs.
Know which troubleshooting tools are used for which purpose.
I have a lot of questions where the SUBNET MASK was invalid, be careful...
Know when Network monitor is required and when Performance monitor is required!!!
Subnetting questions were easy once you understand subnetting and then understand the table.
Know troubleshooting tcpip connections, when subnet mask incorrect, when ip address incorrect, when default gateway incorrect.
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