-
Describe how
the DHCP lease is obtained. It’s a four-step process
consisting of (a) IP request, (b) IP offer, © IP selection
and (d) acknowledgement.
-
I can’t seem to
access the Internet, don’t have any access to the corporate
network and on ipconfig my address is 169.254.*.*. What
happened? The 169.254.*.* netmask is assigned to Windows
machines running 98/2000/XP if the DHCP server is not
available. The name for the technology is APIPA (Automatic
Private Internet Protocol Addressing).
-
We’ve installed
a new Windows-based DHCP server, however, the users do not
seem to be getting DHCP leases off of it. The server must
be authorized first with the Active Directory.
-
How can you
force the client to give up the dhcp lease if you have
access to the client PC? ipconfig /release
-
What
authentication options do Windows 2000 Servers have for
remote clients? PAP, SPAP, CHAP, MS-CHAP and EAP.
-
What are the
networking protocol options for the Windows clients if for
some reason you do not want to use TCP/IP? NWLink (Novell),
NetBEUI, AppleTalk (Apple).
-
What is data
link layer in the OSI reference model responsible for? Data
link layer is located above the physical layer, but below
the network layer. Taking raw data bits and packaging them
into frames. The network layer will be responsible for
addressing the frames, while the physical layer is
reponsible for retrieving and sending raw data bits.
-
What is binding
order? The order by which the network protocols are used
for client-server communications. The most frequently used
protocols should be at the top.
-
How do
cryptography-based keys ensure the validity of data
transferred across the network? Each IP packet is assigned
a checksum, so if the checksums do not match on both
receiving and transmitting ends, the data was modified or
corrupted.
-
Should we
deploy IPSEC-based security or certificate-based security?
They are really two different technologies. IPSec secures
the TCP/IP communication and protects the integrity of the
packets. Certificate-based security ensures the validity of
authenticated clients and servers.
-
What is LMHOSTS
file? It’s a file stored on a host machine that is used to
resolve NetBIOS to specific IP addresses.
-
What’s the
difference between forward lookup and reverse lookup in
DNS? Forward lookup is name-to-address, the reverse lookup
is address-to-name.
-
How can you
recover a file encrypted using EFS? Use the domain recovery
agent.
