Subject: 70-059 TCPIP 4.0

Passed with a 982. I developed my own crib sheet to help me during the test. It incorporates some tables and concepts that others have posted here and at other sites. I found my arrangement to be extremely helpful and easy to remember. Hence, it was easy to "reproduce" prior to starting the test.I have two versions; a MSWord97 doc and an Adobe Acrobat PDF. The Adobe version has a better layout but might not print fully on some devices.

Study the Transcender tests and read a good book on TCPIP, like the Microsoft Network Press. I found the Wave Technologies book to be very basic with big holes in some concepts.

Understand DNS servers - primary, secondary, caching-only and forwarders. CNAME is for entering aliases for the same ip address. MX is the mail exchange (server) record.

NSLOOKUP is used to troubleshoot DNS.

DNS for WINS resolution allows DNS workstations (UNIX) to query the DNS server which in turn queries the WINS server for the host name. WINS resolves the host (which is the same as the computer name) name to the IP address and sends that info back to the DNS server which passes it back to the DNS workstation.

Know the Name Resolution methods for NetBIOS and DNS. My acronyms as they appear on the crib sheet are: Now Will Be Long Hard Days (NetBIOS) and Lip Holes Dribble Whiskey By Limelight (DNS). Silly, but easy to remember.

If you can ping a hostname but cannot connect to a share point in Explorer, then the LMHOST file does not have an entry for that hostname or WINS is not working. Conversely, if you CAN connect to a share in Explorer yet cannot ping the hostname, then either the HOST file entry is wrong or DNS is not working. Just remember - NetBIOS problems are due to problems with WINS or LMHOST file - DNS problems are due to HOST file errors or DNS server problems.

Know that the RAS server's default gateway needs to be blank for it to act as an access point to an ISP(The ISP provides the gateway info to the RAS Server). Win95 clients need their default gateway to point to the RAS server's IP address for access to the internet. PPTP protocol increases security by filtering and allowing only PPTP frames to enter the network.

PPTP can run over a Virtual Private Network (VPN) on ISDN, PSTN and X.25 with the following protocols ip, IPX, netBEUI.

Know DHCP scope creation. Know how and when to set client, scope and global options. Client overrides scope which overrides global. Remember that scopes must NEVER overlap when implementing a second DHCP server. Know that if you specify WINS as an option you must also specify an option for the NetBIOS Node type (H-node is WINS default). Know that you need the ip address AND the hardware(MAC) address of a host to create a reservation.

A hosts' ip address MUST be on the same subnet as its default gateway. If a person can ping locally and not remotely - the default gateway is wrong. If they cannot ping anything but themselves - the subnet mask or ip address is wrong for their workstation. Perform ANDing on the ip address and subnet mask to determine if the address is valid for the subnet.

WINS is used to automatically (read dynamically) register and keep track of NetBIOS to computer name resolution. Static entries need to be entered for UNIX systems (UNIQUE) and Servers with multiples NICs (MULTIHOMED).

In order for all subnets to see all workstations on a WINS-enabled network - set the WINS server as a global option in DHCP or specify the WINS server address in each clients network setup. With two WINS servers on different subnets - set them up as push/pull partners to resolve all WINS-enabled NetBIOS names.

ARP is for IP to MAC resolution only

RIP for IP is to enable multihomed servers to dynamically update their router table entries

LPR is used to PRINT to a LPD device. An LPD device can be either a UNIX server or an NT server.

LPQ checks the Queues on LPD print devices. That's all it does!

LPD is line printer daemon. If lpd is running on UNIX - load TCPIP printing services on NT; create a printer share and assign it to the LPR port pointing towards the UNIX server. (LPR port only appears after TCPIP Printing services have been installed) If the printer is attached to the NT server - just set up TCPIP Printing services and create a share name to the printer.

Hope these bits of information help others out there. Overall I found the actual test to be easier than any of the Transcender practice tests.

128 64 32 16 8 4 2 1

2ⁿ-2

128	# of Subnets	Class A =	0 =	1 -126	Basic formula for figuring out # of subnets and # of hosts. Where n is #of bits in that portion of the address.
64	2	Class B =	10 =	128 - 191
192		Class C =	110 =	192 - 223
32	6	1 Bits in mask belong to Network portion of address		0 Bits in mask belong to Host portion of address
224
16	14	NetBIOS		DNS	The bit number above the subnet mask (indicated by the arrow) is the "block size" for the mask below it. Dividing the subnet mask by its block size and subtracting 1 gives you the # of possible subnets. # of subnets stays the same regardless of address class.
240		NetBIOS Name Cache		Local Host
8	30	WINS Server		Host File
248		Broadcast		DNS Server
4	62	LMHost file		WINS Server
252		Host File		Broadcast
2	126	DNS Server		LMHost
254
1	254	B-Node (01)	Broadcast only	Default non-WINS	An ip address must be on the same subnet as its default gateway.
255		P-Node (02)	Point - Point	Query WINS only
Always remember that the first and last "blocks" of ip addresses are INVALID for any block size, as well as, the first and last ip number in ANY block. If its all 1's or 0's - its wrong.		M-Node (04)	Mixed Node	B-Node then P-Node
		H-Node (08)	Hybrid Node	P-Node then B-Node

 

Subnet Mask	# of Subnets	C	B	A
192	2	62	16382	4096K
224	6	30	8190	2048K
240	14	14	4094	1024K
248	30	6	2046	512K
252	62	2	1022	256K
254	126	0	510	128K
255	254	0	254	64K
		Max # of subnets for Class C is 62. Start with that number on top and go down until you get to 2.	Just remember 254 for the bottom, double it and add two for next number in column.	Just remember 64K for bottom number and double it to the top.