Help me?

thanhcong20581 · Joined: 18 Aug 2006 Posts: 5

Help me, I have Ckills Exam CCNA1

SKILLS EXAM

You have some network connections and have to decide what type of cable to use for each connection, then from the given UTP cables in a box (including wrong cables), you have to choose all the cable you need (in accordance with TIA/EIA-568A/B standard) :

Cable Types Description Instructor¡¦s Remark
Connect PC to Switch
Connect Router to PC
Connect Router to Switch
Connect Hub to Switch
Connect Hub to Router

Section 2. IP Subnetting (50 points)

1 ¡V Answer the following questions (20 points).
Figure 1 is your company¡¦s physical topology. Your company has received a class C network address of
192.168.9.0
According to Figure 1, how many subnets you will need? _________________
How many collision domains are there in the network?________________
According to Figure 1, what is the maximum number of IP address needed for a network?
(Assuming you will assign an IP address for each switch)? ________________
What will the subnet mask be? ______________________________________
How many hosts per subnet can be used? ____________________________

2 ¡V Determine subnets and valid host IP addresses (20 points).
Fill the below table by subnets that can be created with the minimum number of subnet bit(start from subnet #0).

Sub-net Sub network Address Range of valid host IP Address Broadcast Address Usable (Y/N) Used (Y/N)
0 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
1 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
2 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
3 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
4 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
5 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
6 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
7 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
8 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
9 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
10 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
11 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
12 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
13 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
14 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___
15 ___.___.___.___ ___.___.___.___ - ___.___.___.___ ___.___.___.___

3 ¡V Assign an IP address and subnet mask to router interface and hosts (10 points).
Fill in the following table:
Interface or Host IP address Subnet mask Default gateway Subnet Address
Router1A ¡V E0 ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___
Router1B ¡V E0 ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___
Mail Server ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___
Router1A ¡V S0 ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___
Router2 ¡V S0 ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___
Router2 ¡V E0 ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___
Switch3 ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___
My Client ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___
Router4 ¡V E0 ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___
WorkGroup Printer ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___

Section 3. Basic troubleshooting (10 points)
After setting up network in Figure 1, user from computer My Client wants to check his mail by Outlook Express to download mail from Mail Server, the operation was successful.

1. Write the correct steps and put in order:
_____________________________
Where:
1¡V Packet from My Client travels through Router 2 „³ Router 1A „³ Router 1B
2¡V My Client broadcast ARP Request to find its default-gateway¡¦s MAC address
3¡V My Client examine what physical address it needs to encapsulate the frame
4¡V Mail server¡¦s IP address is recorded in Outlook Express¡¦s settings so operating system can get it to encapsulate IP packet
5¡V Station1 may receive ARP request from My Client, but then drop it after some processing
6¡V POP3 is called to to contact to Mail server
7¡V Switch3 switches the frame containing POP3 data from My client to only Router2 E0 interface
8¡V Mail server processes the packet (from My Client) from layer1 through layer 7.
2. In the above situation, which of the following is NOT true (choose two)?
a) Checking mail later will be faster because the connection betwwen My Client and Mail Server has already been established and still exist.
b) Right after that, user access a website on Web Server, this time ARP request is not neccesary
c) If My Client can connect to Mail Server, it must be able to ping Mail Server
d) If user want to send a mail, POP3 will be called again .
e) When Router1B forwards frame back to Router1A, Switch1 can not see this frame

Section 4. Miscellaneous (25 points)

3. You type ipconfig /all at a command prompt at Jim's machine. You get the following displayed on his screen:

Physical Address : 00-10-4B-65-12-6C
DHCP Enabled No
IP Address 192.67.35.18
Subnet Mask 255.255.255.240
Default Gateway 192.67.35.1

What is not right in the above output?
a) The number of subnet bits should be more.
b) DHCP should be enabled.
c) The physical address is not valid.
d) The default gateway is incorrect.
4. If a client has a valid IP address and a valid subnet mask but has incorrect default gateway, what symptoms could result?
a) The client can connect to some but not all host on a different subnet
b) The client can connect to hosts on the local subnet but not to hosts on the different subnet
c) The client can ping all host by IP address, but not by domain name
d) The client cannot ping a host on different subnet but that host can ping the client

5. You don¡¦t want to manually reconfigure IP address and default gateway of workstations each time they connect to the different subnet. Which of the following might be a solution?
a) DNS
b) RARP
c) DHCP
d) ARP
e) IPX
f) TFTP
6. From your computer¡¦s browser, you can connect to all web sites by IP address but you cannot connect to them by domain name? Which of the following would be an effective troubleshooting step?
a) Check your IP address setting
b) Check your WINS server setting
c) Check your DNS server setting
d) Check your Computer name setting
e) Check your Workgroup setting
7. A new network is being designed for your company using a Class C IP network. Company has 5 department, each department has 12, 13, 7, 14, 12 staffs. Which subnet mask will provide one useable subnet per department while allowing enough usable host addresses for each department specified in the graphic? (choose two)
a) 255.255.255.0
b) 255.255.255.192
c) 255.255.255.224
d) 255.255.240.0
e) 255.255.255.252
f) 255.255.255.240
8. Which of the following TCP/IP protocol is primarily used for network status and error message?
a) IP
b) RIP
c) TCP
d) UDP
e) ICMP