Rabu, 27 Oktober 2010

CCNA 1.9

CCNA Discovery 1 Module 9 Exam Answers Version 4.0

1. Ask the user what URL has been typed and what error message displays.
2. substitution
3. Check the workstation TCP/IP configuration.
4. documenting the troubleshooting process
keeping a record of system upgrades and software versions
5. hardware failure
loose cable connections
6. ipconfig /renew
7. tracert
8. nslookup
9. bottom-up
10. The ports are operational and are receiving traffic.
11. A crossover cable is being used.
12. The wired connection is the wrong type of cable.
13. SSID
authentication
encryption key
14. configuring NAT
broadcasting the SSID
      using open authentication
      using the default internal IP address
15. The host WEP key is incorrect.
16. The host IP address is incorrect.
17. default gateway
     dynamic IP address
     DNS server address
18. router status page
      connectivity status as indicated by LEDs
19. Ensure the correct cable is used.
     the link status LED on the integrated router is lit.
20.after the network is installed and running optimally
      after major changes are implemented on the network
21. identifying when the problem occurred
       implementing the solution to the problem
22. Diagnostics can be run without a technician being present at the site.

ccna 1.8

CCNA Discovery 1 Module 8 Exam Answers Version 4.0

1. vishing
        phishing
        pretexting
2.by phone
3. Trojan horse
4. exploits vulnerabilities with the intent of propagating itself across a network
5. SYN flooding
6. pop ups
7. spam
8. acceptable use
9. Only after a virus is known can an anti-virus update be created for it.
10. When anti-spam software is loaded, legitimate e-mail may be classified as spam by mistake.
Even with anti-spam software installed, users should be careful when opening e-mail attachments.
11. appliance-based
12. DMZ
13. Only external traffic that is destined for specific internal ports is permitted. All other traffic is denied.
14. internal
15. to prevent outside intruders from attacking the router through the Internet
16. Internet access can be denied for specific days and times.
17. a large corporate environment
18. It identifies missing security updates on a computer.
19. Disable the wireless network when a vulnerability analysis is being performed.
20. a change of the default IP address
21. It requires that packets coming into the router be responses to internal host requests.

tugas ccna 1.7

CCNA Discovery 1 Module 7 Exam Answers Version 4.0
1. Why is IEEE 802.11 wireless technology able to transmit further distances than Bluetooth technology?
• transmits at much lower frequencies
• has higher power output
• transmits at much higher frequencies
• uses better encryption methods

2. What are three advantages of wireless over wired technology? (Choose three.)
• more secure
• longer range
• anytime, anywhere connectivity
• easy and inexpensive to install
• ease of using licensed air space
• ease of adding additional devices

3. What are two benefits of wireless networking over wired networking? (Choose two.)
• speed
• security
• mobility
• reduced installation time
• allows users to share more resources
• not susceptible to interference from other devices

4. A technician has been asked to provide wireless connectivity to the wired Ethernet network of a building. Which three factors affect the number of access points needed? (Choose three.)
• the size of the building
• the number of solid interior walls in the building
• the presence of microwave ovens in several offices
• the encryption method used on the wireless network
• the use of both Windows and Appletalk operating systems
• the use of shortwave or infrared on the AP

5. Why is security so important in wireless networks?
• Wireless networks are typically slower than wired networks.
• Televisions and other devices can interfere with wireless signals.
• Wireless networks broadcast data over a medium that allows easy access.
• Environmental factors such as thunderstorms can affect wireless networks.

6. What does the Wi-Fi logo indicate about a wireless device?
• IEEE has approved the device.
• The device is interoperable with all other wireless standards.
• The device is interoperable with other devices of the same standard that also display the Wi-Fi logo.
• The device is backwards compatible with all previous wireless standards.

7. Which statement is true concerning wireless bridges?
• connects two networks with a wireless link
• stationary device that connects to a wireless LAN
• allows wireless clients to connect to a wired network
• increases the strength of a wireless signal

8. Which WLAN component is commonly referred to as an STA?
• cell
• antenna
• access point
• wireless bridge
• wireless client

9. Which statement is true concerning an ad-hoc wireless network?
• created by connecting wireless clients in a peer-to-peer network
• created by connecting wireless clients to a single, centralized AP
• created by connecting multiple wireless basic service sets through a distribution system
• created by connecting wireless clients to a wired network using an ISR

10. Refer to the graphic. In the Wireless menu option of a Linksys integrated router, what does the Network Mode option Mixed mean?
• The router supports encryption and authentication.
• The router supports both wired and wireless connections.
• The router supports 802.11b, 802.11g, and 802.11n devices.
• The router supports connectivity through infrared and radio frequencies.

11. Refer to the graphic. In the Wireless menu of a Linksys integrated router, what configuration option allows the presence of the access point to be known to nearby clients?
• Network Mode
• Network Name (SSID)
• Radio Band
• Wide Channel
• Standard Channel
• SSID Broadcast

12. Which two statements about a service set identifier (SSID) are true? (Choose two.)
• tells a wireless device to which WLAN it belongs
• consists of a 32-character string and is not case sensitive
• responsible for determining the signal strength
• all wireless devices on the same WLAN must have the same SSID
• used to encrypt data sent across the wireless network

13. Which two statements characterize wireless network security? (Choose two.)
• Wireless networks offer the same security features as wired networks.
• Wardriving enhances security of wireless networks.
• With SSID broadcast disabled, an attacker must know the SSID to connect.
• Using the default IP address on an access point makes hacking easier.
• An attacker needs physical access to at least one network device to launch an attack.

14. What type of authentication does an access point use by default?
• Open
• PSK
• WEP
• EAP

15. Which statement is true about open authentication when it is enabled on an access point?
• requires no authentication
• uses a 64-bit encryption algorithm
• requires the use of an authentication server
• requires a mutually agreed upon password

16. What are two authentication methods that an access point could use? (Choose two.)
• WEP
• WPA
• EAP
• ASCII
• pre-shared keys

17. What is the difference between using open authentication and pre-shared keys?
• Open authentication requires a password. Pre-shared keys do not require a password.
• Open authentication is used with wireless networks. Pre-shared keys are used with wired networks.
• Pre-shared keys require an encrypted secret word. Open authentication does not require a secret word.
• Pre-shared keys require a MAC address programmed into the access point. Open authentication does not require this programming.

18. What term describes the encoding of wireless data to prevent intercepted data from being read by a hacker?
• address filtering
• authentication
• broadcasting
• encryption
• passphrase encoding

19. What access-point feature allows a network administrator to define what type of data can enter the wireless network?
• encryption
• hacking block
• traffic filtering
• MAC address filtering
• authentication

20. What are the two WEP key lengths? (Choose two.)
• 8 bit
• 16 bit
• 32 bit
• 64 bit
• 128 bit

21. Complete the following sentence: WEP is used to ______ , and EAP is used to _____ wireless networks.
• encrypt; authenticate users on
• filter traffic; select the operating frequency for
• identify the wireless network; compress data on
• create the smallest wireless network; limit the number of users on

Kamis, 21 Oktober 2010

tugas ccna 7.3.5

Lab 7.3.5 Configuring Wireless Security

Lab 7.3.5 Configuring Wireless Security
Objectives
• Create a security plan for a home network.
• Configure the wireless access point (AP) portion of a multi-function device using security best practices.

Background / Preparation
A well-planned security implementation is critical to the safety of a wireless network. This lab goes over the steps that must be taken to ensure the safety of the network using the following scenario. You have just purchased a Linksys WRT300N wireless router, and you want to set up a small network in your home. You selected this router because the IEEE 802.11n specification claims that it has 12 times the speed of an 802.11g and 4 times the range. Because the 802.11n uses 2.4 GHz, it is backward compatible with both the 802.11b and 802.11g and uses MIMO (multiple-in, multiple-out) technology.
You should enable security mechanisms before connecting your multi-function device to the Internet or any wired network. You should also change the default values provided, because they are well-known values that are easily obtainable on the Internet.

The following resources are required:
• Windows-based computer
• Linksys WRT300N
• Straight-through Ethernet cable

Step 1: Plan the security for your home network
a. List at least six security best practices that you should implement to secure your multi-function device and wireless network.
Jawaban
1) Tambahkan password untuk akses wireless dan gunakan password WPA2 Encryption.
2) Jangan gunakan nama SSID dengan nama anda.
3) Aktifkan alamat MAC spoofing untuk mengatasi alamat MAC yang salah dari router anda.
4) Aktifkan Allow MAC Address only untuk memastikan bahwa hanya mesin yang MAC alamat yang ditentukan dapat terhubung ke wireless.
5) Sebaiknya gunakan LAN jika kita melakukan proses download misalnya pada malam hari dan matikan wireless.
6) Aktifkan firewall router jarngan wireless Anda.

b. Describe what the security risk is for each item.
1) Akan terjadi kemungkinan pengaksesan jaringan oleh pihak yang tidak berhak
2)
3)
4)
5)
6)


Step 2: Connect a computer to the multi-function device and log in to the web-based utility

a. Connect your computer (Ethernet NIC) to the multi-function device (port 1 on the Linksys WRT300N) by using a straight-through cable.
b. The default IP address of the Linksys WRT300N is 192.168.1.1, and the default subnet mask is 255.255.255.0. The computer and Linksys device must be on the same network to communicate with each other. Change the IP address of the computer to 192.168.1.2, and verify that the subnet mask is 255.255.255.0. Enter the internal address of the Linksys device (192.168.1.1) as the default gateway.
Do this by clicking, Start > Control Panel > Network Connections. Right click on the wireless connection and choose Properties. Select the Internet Protocol (TCP/IP) and enter the addresses as shown below.

c. Open a web browser, such as Internet Explorer, Netscape, or Firefox and enter the default IP address of the Linksys device (192.168.1.1) into the address field and press Enter.

d. A screen appears, requesting your user name and password.
b. Leave the User name field blank and enter admin for the password. It is the default password on the Linksys device. Click OK. Remember that passwords are case-sensitive.
c. As you make the necessary changes on the Linksys device, click Save Settings on each screen to save the changes or click Cancel Changes to keep the default settings.

Rabu, 20 Oktober 2010

latihan ccna 7.2.6

Lab 7.2.6 Configuring a Wireless Client
Objective
• Install and configure a driver for a wireless USB NIC for a wireless client computer.
• Determine the version of the driver installed and check the Internet for updates.
Background / Preparation
In this lab you will install a driver for a wireless USB NIC in a computer. The driver is a type of software that
controls the wireless NIC. The driver comes on a CD with the NIC or can be downloaded from the Internet.
Many manufacturers require that the driver is installed before the adapter is connected. The procedure
described in this lab is for a Linksys USB 802.11g wireless NIC, but is similar to others. You should always
follow the procedure recommended by the wireless NIC manufacturer.
The following resources are required:
• Windows XP-based computer with an available USB port
• Wireless USB NIC and associated driver
• Administrator rights to install the driver
• Linksys WRT300N with wireless access configured from previous lab

Step 1: Install the wireless NIC driver
a. Insert the CD that contains the wireless NIC driver into the CD/DVD drive and install the driver
according to the manufacturer recommendations. Most USB devices require that the driver be
installed before the device is physically attached. Note that you may do part of the installation process
now and part of it after the wireless NIC is installed

latihan ccna

Lab 7.2.5 Configuring a Wireless Access Point
Lab 7.2.5 Configuring a Wireless Access Point
Objective
• Configure the wireless access point (AP) portion of a multi-function device to allow access to a
wireless client.
Background / Preparation
The Linksys WRT300N includes an integrated 4-port switch, a router and a wireless Access Point (AP). In this
lab, you will configure the AP component of the multi-function device to allow access for wireless clients. The
basic wireless capabilities of the multi-function device will be configured but this will not be a secure wireless
network. Setting up a secure wireless network will be covered in a later lab.
The following resources are required:
• Windows XP based computer that is cabled to the multi-function device
• Linksys WRT300N
Step 1: Verify connectivity between the computer and the multi-function device
a. The computer used to configure the AP should be attached to one of the multi-function device’s
switch ports.
b. On the computer, click the Start button and select Run. Type cmd and click OK or press Enter.
c. At the command prompt, ping the multi-function device using the default IP address 192.168.1.1 or
the IP that has been configured on the multi-function device’s port. Do not proceed until the ping
succeeds.
d. Write down the command used to ping the multi-function device.
____________________________________________________________________________
NOTE: If the ping is not successful, try these troubleshooting steps:
• Check to make sure the IP address of the computer is on the 192.168.1.0 network. The computer
must be on the same network as the multi-function device to be able to ping it. The DHCP service of
the multi-function device is enabled by default. If the computer is configured as a DHCP client it
should have a valid IP address and subnet mask. If the computer has a static IP address, it must be
in on the 192.168.1.0 network and the subnet mask must be 255.255.255.0.
• Make sure the cable is a known-good straight-through cable. Test to verify.
• Verify that the link light for the port where the computer is attached is lit.
• Check whether the multi-function device has power.
If none of these steps correct the problem, check with your instructor.
Step 2: Log in to the multi-function device and configure the wireless network
a. Open a web browser. In the address line, type http://ip_address/, where ip_address is the IP address
of the wireless router (default is 192.168.1.1). At the prompt, leave the user name textbox empty, but
type the password assigned to the router. The default password is admin. Click OK.
b. In the main menu, click on the Wireless option.

latihan ccna

tep 1 :
d. 96.6.224.170
e. tidak,
f. Core FTP Lite
Step 2 :
a.
b. http://www.unp.ac.id/
c.
d. Help
e. exit, root, type
f. 60.254.168.170
g. e144.cd.akamaiedge.net
h. tidak
i. deploy.akamaitechnologies.com
Step 3
a. ns4.unp.ac.id
b. -10.1.1.3
   -202.134.0.155