1. Configuring Addressing and Services (21 percent) Flashcards
You need to set up a network in the lab for a training class. You want to isolate the lab network from the rest of the corporate network so students don’t inadvertently do something that takes the entire network down. What IP
addressing method would you use?
A. Private network addressing
B. Public network addressing
C. Network Address Translation
D. Subnet isolation through subnet mask
D
Subnet isolation through subnet mask
Your boss asked you to subnet a network in the lab for an upcoming class.
He hands you a piece of paper while he’s on the phone and it simply says
“192.168.10.x/25. 4 subnets.” What is the subnet mask and the first address in
each subnet?
A. 255.255.255.0/ 192.168.10.1, 192.168.10.32, 192.168.10.64,
192.168.10.128
B. 255.255.255.252/ 192.168.10.0, 192.168.10.32, 192.168.10.64,
192.168.10.128
C. 255.255.255.240/ 192.168.10.0, 192.168.16.0, 192.168.24.0, 192.168.32.0
D. 255.255.255.128/ 192.168.10.1, 192.168.10.33, 192.168.10.65,
192.168.10.97
D
Which of these statements is true of clientless end-user devices?
A. They do not receive unique IP Addresses
B. RADIUS or LDAP is required in order to assign IP Addresses
C. Their traffic appears to originate from the originating host network
D. They are assigned addresses from the internal DHCP pool
Answer: A
There are tons of protocols—sometimes it’s like alphabet soup—MS-CHAP, MS-CHAP v2, EAP, PEAP, PPP, Kerberos V5, and the list goes on. I’m having a
hard time keep all these straight and remembering how they’re used (or not) in Windows Server 2008. Any tips you can share?s you can share?
It does seem like every new release from Microsoft comes with a lot of new acronyms to learn, so the ALC (acronym learning curve) can be a bit daunting.
You’re probably familiar with some of these protocols from previous versions of Windows. If not, you might want to brush up on those before heading in to
Windows Server 2008. However, there are some basics that might help. First, divide protocols into those used to authentication users locally (Kerberos, etc.) and those used to authentication users remotely (PPP, EAP, PEAP). It can be helpful to divide the protocols according to these areas so you can better keep track of what they do and when they’re used. Also, spend time in the Routing and Remote Access Server segment of Windows Server 2008 as well as in the Windows Firewall with Advanced Security section. The more you see the various protocols being used in the default screens, the more they should sink
in. That said, there are a lot of acronyms and thankfully, Microsoft exams don’t test you on acronyms. Most of the time, the item will be spelled out the first time you see it (as we do in this book). If it’s not, then it’s a pretty common acronym such as AD for Active Directory or IP, IPsec, or DHCP.
You have a growing network that originally was configured using the private Class C address space. However, you’re now about to grow beyond the
maximum number of devices and need to expand but you don’t anticipate needing more than a total of 290 addresses. What action would you take to solve this problem that would create the least disruption to your network?
A. Install a router. Create two new scopes on your DHCP Server and reassign IP addresses.
B. Change the default subnet mask to 255.255.252.0.
C. Change the IP addressing scheme from Class C to Class B.
D. Assign new computers on the network IP addresses from the existing
address pool.
B
You open Windows Server 2008 DHCP Server role and examine the scope settings one of your staff members created, shown in Figure 1.33. Based on this information, which statement is true?
A. The Preference Value is incorrect. It must be set to 1 for all addresses that
use the /64 option.
B. The Prefix Value is incorrect. It cannot begin with 0:0:0:.
C. The Prefix Value is too long. It should contain fewer digits.
D. Both B and C are correct.
E. The Prefix value and Preference values are correct.
D
You’ve asked Justin, a junior member of your IT staff, to install Windows Server 2008 on a spare computer in the lab and set up the DHCP role so you can teach a class on what’s new in DHCP. Justin hesitates and asks how he should set the scope settings so it doesn’t take the network down. What should you tell Justin?
A. DHCP in Windows Server 2008 cannot be installed on a computer attached to a network with a live DHCP server. Remove the server’s network connection before installing DHCP
B. Only one DHCP can exist on a network. He should configure the server as a DHCP relay agent instead.
C. A new DHCP server must be authorized in AD before it can perform the DHCP role.
D. Adding a new DHCP server could not take the network down.
C
You need to expand your network and create a new subnet for a new research project. You want the traffic for the research group to remain local to the subnet. None of the computers for the research project are installed yet. What’s the fastest and easiest way to go about creating this subnet and keeping local traffic local?
A. Add the computers to the network, assign them a different subnet mask, enable IPsec through Group Policy, and assign it to the research project subnet.
B. Create a scope on the DHCP server that will provide addresses to just those computers, install a router, assign it a static IP address, and use that
router as the default gateway for the computers on that subnet.
C. Install a new router and configure it as the DHCP Relay Agent for the existing scope using a static IP address. Then, connect the new computers
to the network through the new router.
D. Modify the existing scope options on the DHCP server so that the subnet addresses for the new research subnet are excluded from the scope. Install
a new router and configure it with a static IP address from the same range as the excluded IP addresses. Last, connect the new computers to the subnet and check that they are configured to automatically get IP
configuration data.
B
The company has just leased a nearby building so it can expand operations.
You’ve been asked to configure the network infrastructure in the new building.
You configure the DHCP server that will go on this new network segment
with the following options:
■ Scope: 192.168.10.0 to 192.168.15.0
■ Subnet mask: 255.255.252.0
■ Default gateway: 192.168.10.1
■ Exclusions: 192.168.12.0 to 192.168.12.20
■ Reservations: 192.168.10.1 DNS server, 192.168.12.2 DNS server,
192.168.12.5 WINS server, 192.168.12.6 Router8
You set Router 8 to have a static IP address of 192.168.12.6 and configure it
to be a DHCP relay agent. What’s wrong with your set up?
A. You can’t have two DNS servers on one subnet, the scope and the subnet
mask do not match, you can’t set up a router as DHCP relay agent.
B. Your scope cannot have a zero in the last place, your subnet mask is wrong,
your default gateway and your DNS server share the same IP address and
may slow down the subnet, you don’t need a WINS server.
C. Your default gateway and your DNS server use the same IP address. You
cannot have a DHCP relay agent (your router) and a DHCP server on
the same subnet. Your excluded range and your reservations settings are
mutually exclusive.
D. The default gateway has the wrong IP address and all network traffic
will be sent to the Router, causing all local traffic to be routed to the
main network and back again, causing too much unneeded network
traffic. You don’t need a DHCP server on this subnet and should simply
enable the server as a RRAS server to handle remote traffic to the main
corporate site.
C
You’ve set up a new subnet with a DHCP server. After a few days, mobile users begin complaining they can’t log onto the network when they’re locally connected (at their desks, for example). What would you check in your DHCP settings?
A. Scope settings
B. Exclusions
C. Subnet mask or default gateway
D. Lease duration
D
A recent change to the network infrastructure configuration was completed over the weekend. Monday morning, users begin complaining that the network
is terribly slow. The Help Desk phones are lit up and there’s a rumble in the building as users start going to others’ desks asking if they’re having any luck
using network resources and getting out to the Internet. The new configuration is shown in Figure 1.34. What would you change in order to best resolve this
problem?
A. Add a DNS Server to Subnet C.
B. Remove the DHCP Relay Agent role from either Router 2 or Router 3.
C. Add a DHCP Server to Subnet C and remove Router 3.
D. Both A and C.
E. Add a DHCP Server to Subnet C.
E
You have a DHCP server that runs Windows Server 2008 R2. You restore the DHCP database by using a recent backup. You need to prevent DHCP clients from receiving IP addresses that are currently in use on the network. What should you do?
Add the DHCP server option 15.
Add the DHCP server option 44.
Set the Conflict Detection value to 0.
Set the Conflict Detection value to 2.
D
15
Domain name
Specifies the DNS domain name that the client should use for DNS computer name resolution.
44
WINS/NBNS servers
Specifies a list of IP addresses for NetBIOS name servers (NBNS).
Conflict Detection value to 0.is for
Default DHCP Options
1
3
6
15
51
- 1 = subnet mask
- 3 = router
- 6 = dns servers
- 15 = domain name
- 51 = lease time
ISO stands for what?
and What are the 7 layers?
International Standards Organization (ISO) introduced the OSI networking model to standardize data communication and promote multivendor network interoperability.
Please Do Not Take Sales People’s Advice
Physical: Media, signal and binary transmission
Data Link: Delivery of information frame
Network: Controls routing of packets
Transport: End-to-end connections, reliability and flow control
Session: End-to-end connections, reliability and flow control
Presentaions: Data representation, encryption and decryption, convert machine dependent data to machine independent data
Application: Network process to application eg Telnet
http://en.wikipedia.org/wiki/OSI_model
ISO
