Friday, August 3, 2018

Coding for our membership resume

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<h1>Membership Resumes</h1>
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<img src=https://mail.google.com/mail/u/0/?ui=2&ik=5da5f88ec3&view=fimg&th=1624960bd97fd137&attid=0.2&disp=emb&realattid=ii_jf1b1ci31_1624960b15a0963d&attbid=ANGjdJ8AeX3-jEmfMD_DfeCGyQyDuNEBmqayGF-kvmyi5rTa9LYyzuM_bYfo0Mf1yuxPSuO5CzED6DCNlGuHqCrbXGGK_eHT5LX3nkGonjD8iyHp2BnvKtkqNy4NJqA&sz=w740-h908&ats=1521649503461&rm=1624960bd97fd137&zw&atsh=1"width=200 height=180 centre=50</img>

<h1 style="background-color:rgba(255, 99, 71, 0.5);">Personal Details</h1>
<p>Name : Nurul Amirah binti Adnan</p>
<p>No I/C : 980130355018</p>
<p>Country : Malaysia</p>
<p>Gender : Female</p>
<p>Date of birth : 30/1/1998</p>
<p>Race : Malay</p>
<p>Religion : Islam</p>
<p>Profession : Programmer</p>
<p>Email : nurulamirah.adnan6@gmail.com</p>

<h1 style="background-color:rgba(255, 99, 71, 0.5);">Education</h1>
<li><a href="#"></a>Kolej Matrikulasi Kedah (16-17)</li>
<li><a href="#"></a>Universiti Tun Hussein Onn (17-now)</li>

<hr>
<img src="https://mail.google.com/mail/u/0/?ui=2&ik=5da5f88ec3&view=fimg&th=1624960bd97fd137&attid=0.1&disp=emb&realattid=ii_jf1b13b20_1624960806dded42&attbid=ANGjdJ9guMgke-0hP6JzrVLNBUXComdoZKilpZbgLLbXChjhkKQSkQP4AgDjw1oOKv8qsj4oCO11Ef65yBj4fkW4Qwgi3RZsQ8XSUnlUHnDDbWuHnwIcVyFdGJLadnI&sz=w908-h610&ats=1521649503461&rm=1624960bd97fd137&zw&atsh=1"width=200 height=180 centre=50</img>

<h1 style="background-color:rgba(255, 99, 71, 0.5);">Personal Details</h1>
<p>Name : Nurfariha binti Salam</p>
<p>No I/C : 980623065748</p>
<p>Country : Malaysia</p>
<p>Gender : Female </p>
<p>Date of birth : 23/6/1998</p>
<p>Race : Malay </p>
<p>Religion : Islam </p>
<p>Profession : Programmer</p>
<p>Email : nufasalam@gmail.com</p>

<h1 style="background-color:rgba(255, 99, 71, 0.5);">Education</h1>
<li><a href="#"></a>Kolej Matrikulasi Pahang (16-17)</li>
<li><a href="#"></a>Universiti Tun Hussein Onn (17-now)</li>

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Sunday, May 20, 2018

LAB 8

1. How to check your computer IP address? Give me several ways on how to do it.

-Using the command prompt to find your ip address and router’s Ip address

-Find public ip address from your browser

-Check your ip address from local area connection

2. How are we going to setup static IP configuration ?

Step 1: Click Start Menu > Control Panel > Network and Sharing Center. (For Windows 8 and higher, search for and open Control Panel and select Network And Internet). Click Change adapter settings.

Step 2: Right-clock on Local Area Connection and click on Properties

Step 3 : Select Internet Protocol Version 4 (TCP/IPv4) and click on Properties.

Step 4: Select "Use the following IP address" and enter the IP address, Subnet Mask, Default Gateway. and DNS server. Click OK and close the Local Area Connection properties window.

3. When do we need to setup static IP configuration ?

A static IP address is useful if you host a website from home, have a file server in your network, are using networked printers, are forwarding ports to a specific device, are running a print server, or if you use a remote access program. Because a static IP address never changes, other devices always know exactly how to contact a device that uses one.

4.Do you know the type of UTHM IP configuration ? Is it static or dynamic?

Static.

5.What is static IP ?

A static Internet Protocol (IP) address (static IP address) is a permanent number assigned to a computer by an Internet service provider (ISP). Static IP addresses are useful for gaming, website hosting or Voice over Internet Protocol (VoIP) services.

6. What is dynamic IP ? When do we need to use dynamic IP ?

• A dynamic IP address is an IP address that's automatically assigned to each connection, or node, of a network, like your smartphone, desktop PC, wireless tablet and etc. This IP addresses is done by what's called a DHCP server.

• Dynamic IP change from time to time, automatically without notice . Most IP addresses assigned today by Internet Service Providers are dynamic IP addresses. It's more cost effective for the ISP and you. Dynamic IP address are more flexible, and easier to setup and administer, than static IP address assignments.

7.By using two IP addresses, show me how to configure a simple network ( Consist of Computer A and Computer B). Show me step by step.

Using advanced TCP/IP settings, you can configure a single network interface on a computer to use multiple IP addresses and multiple gateways. This allows a computer to appear to be several computers and to access multiple logical subnets to route information or to provide internetworking services.

The best way to configure multiple gateways depends on the configuration of your network. If your organization's computers use DHCP, you'll probably want to configure the additional gateways through settings on the DHCP server. If computers use static IP addresses or you want to set gateways specifically, assign them by following these steps:

1. Click Start and then click Network. In Network Explorer, click Network and Sharing Center on the toolbar.

2. In Network and Sharing Center, click Manage Network Connections. In Network Connections, right-click the connection you want to work with and then select Properties.

3. Double-click Internet Protocol Version 6 (TCP/IPv6) or internet protocol version 4 (TCP/IPv4) as appropriate for the type of IP address you are configuring.

4. Click Advanced to open the Advanced TCP/IP Settings dialog box. Figure 21-2 shows advanced settings for IPv4. The dialog box for IPv6 is similar.

Monday, May 7, 2018

IP Addresses and DNS

Fundamentals of Web Technology by Amirah Adnan on Scribd

Monday, April 2, 2018

LAB 6

Lab 6 : TCP/IP Utilities

1. Why do we need to ping?

- Ping is used diagnostically to ensure that a host computer the user is trying to reach is actually operating.

-Ping can be used for troubleshooting to test connectivity and determine response time.

2. Explain the term Sent, Received, Lost dan TTL.

Figure 1

Sent- Total number of the packets sent for the ping process

Received- Total number of the packets received for the ping process

Lost- show if there is any connection problem. If there were any packets lost, there is likely a connection problem.

TTL- Time-to-live (TTL) is a value in an Internet Protocol (IP) packet that tells a network router whether or not the packet has been in the network too long and should be discarded.

3. Explain what is happening in Figure 1.
-

“Ping 117.194.0.24“à Ping only knows how to communicate with IP addresses.

“Reply from 117.194.0.24”à This tells you that the remote server at that IP address replied. What that means, though, is that the entire route across the internet, from your machine through routers and switches and networking equipment and whatever else, worked, as did the return path carrying the server’s reply. If this fails, (“timed out”) then something along the connection between you and the server might be broken, the server might be offline, or the server might not even exist. It’s also possible the server is explicitly configured not to respond to ping requests.

“time<1ms”à This is the round trip time: the time between sending “Are you there?” and receiving “Yes I am!”. In this case, it took < 1 milliseconds. Since the ping is repeated several times, you can see that this time is fairly consistent, which is good. The time varies depending on many factors, including how close you are to the remote server, how many routers and other networking equipment are between you and that server, and more.

“Sent = 4, Received = 4” àOne of the things TCP/IP is designed to deal with is packets loss. Ideally, every packet you send should get to where it’s going, but for various reasons, that doesn’t always happen. As long as the packets can get there after a retry or two, in normal usage you’d never notice. Ping sends multiple packets and reports specifically on the success rate, so you can see if a particular connection is prone to packet loss.

“Approximate round trip times”à While on average the same kind of packet sent to the same destination should take roughly the same amount of time, that’s also not always the case. Some packets take longer than others, for reasons as diverse as the equipment involved and paths followed. Ping reports these statistics so you can see if a particular connection is prone to this type of problem.

Figure 2

4. 127.0.0.1 refers to localhost.

5. Why do we need to ping 127.0.0.1?
- to test whether new network card works with correct driver installed, you can test to ping 127.0.0.1 in command prompt (you can test this even your computer is not connected to network).

6. Explain what is happening in Figure 2 ?
- The test is working although it’s not connected to network.iit is because this IP address is also called loopback IP address or localhost, this IP address represents your computer's IP address itself from your computer’s viewpoint.

7. What does it mean by Request timed out?
- - If a request times out, it means that your computer did not receive a response at all. It's the equivalent of calling someone and having the phone ring hundreds of times until you decide to give up.

8. Explain what is happening in Figure 3 ?
- Message ‘request time out’ out.this is because there is no reply from the destination host. There are many reasons like network connectivity issues, blocking by Firewall etc.

Figure 3.

9. What is the different between Figure 3 and Figure 4 ?

The first “hops” are the same as the traffic reaches your ISP, while the later hops are different as the packets go elsewhere. For example, below you can see the packets travelling to www.google.com.

Figure 4.

10. What is tracert ?
- Traceroute is a utility that records the route (the specific gateway computers at each hop) through the Internet between your computer and a specified destination computer. It also calculates and displays the amount of time each hop took.

11. Explain what is happening in Figure 5 ?

Figure 5.

In Figure 5, the command nslookup was performed that is to find name server information about internet servers by querying Domain Name System(DNS). This command identifies which DNS server the computer is currently configured to use for its DNS lookups. But based on the Figure 5, the command cannot identify the DNS server maybe due to troubleshooting problems or the computer is not connected to the internet. This test will try to find the host for google page and go4expert page and reach it server. However based on this test, the server for the host cannot be reach.

When it tried the nslookup command for domain name www.google.com . And we can see the server is still unknown. This time, it gets the non-authoritative answer which refers to DNS records kept on third-party DNS servers, which they obtained from the "authoritative" servers that provide the original source of the data.

Lastly, it tried nslookup on domain name www.go4expert.com. Based on the figure above, we can see that the server is still unknown and it also gets non-authoritative answer.

12. Explain Physical Address and IP Address.

- - A physical address also knows as MAC address and is a binary number in the form of logical high and low states on an address busthat corresponds to a particular cell of primary storage(also called main memory), or to a particular register in a memory-mapped I/O(input/output) device while IP address is logical numeric address that is assigned to every single computer, printer, switch, router or any other device that is part of a TCP/IP-based network.

13. What are differences between Physical Address and IP address.

- The difference between physical address and IP address are the IP address is an address bound to the network device, i.e., computer, via software. In a Windows-powered computer, the Windows operating system allows the user to configure the IP address the specific workstation will have. This IP address is used to allow all network aware programs, i.e., Internet Explorer, Netscape, Outlook, etc. to use this address when communicating with other hosts. The seventh layer in the OSI model has the IP addresses while for the Physical address/ MAC address is a hardware address, which means it is unique to the network card installed on your PC. No two devices on a local network should ever have the same MAC address. In the unlikely event this occurs, the two devices will have major communication problems. During the manufacturing process, the vendor "burns" a specific MAC address into each network card's ROM. When the serial numbers have all been used, they start from the beginning, as it's very unlikely anyone would buy two network cards from the same vendor, and they will contain the same MAC address. So, to sum all that up, remember that a IP address is a logical address which is configured via the operating system, while the Physical address/MAC address is a hardware address, burnt into the network card's ROM during the manufacturing process.

Figure 6.

Monday, March 26, 2018

Membership resume

Membership Resumes

Personal Details

Name : Nurul Amirah binti Adnan

No I/C : 980130355018

Country : Malaysia

Gender : Female

Date of birth : 30/1/1998

Race : Malay

Religion : Islam

Profession : Programmer

Email : nurulamirah.adnan6@gmail.com

Education

Kolej Matrikulasi Kedah (16-17)

Universiti Tun Hussein Onn (17-now)

Personal Details

Name : Nurfariha binti Salam

No I/C : 980623065748

Country : Malaysia

Gender : Female

Date of birth : 23/6/1998

Race : Malay

Religion : Islam

Profession : Programmer

Email : nufasalam@gmail.com

Education

Kolej Matrikulasi Pahang (16-17)

Universiti Tun Hussein Onn (17-now)

Tuesday, February 27, 2018

The First ...

1) The First Website

Tim Berners-Lee, a British scientist at CERN, invented the World Wide Web (WWW) in 1989. The web was originally conceived and developed to meet the demand for automatic information-sharing between scientists in universities and institutes around the world.

The first website at CERN - and in the world - was dedicated to the World Wide Web project itself and was hosted on Berners-Lee's NeXT computer. The website described the basic features of the web; how to access other people's documents and how to set up your own server. The NeXT machine - the original web server - is still at CERN. As part of the project to restore the first website , in 2013 CERN reinstated the world's first website to its original address.

Tim Berners Lee

2) The First Loudspeaker

In 1877, Ernst Siemens released a more advanced version of an electric loudspeaker after Alexander Graham Bell, inventor of the telephone, had patented a similar invention in 1876. At the same time, both Nikola Tesla and Thomas Edison were experimenting with similar devices. Edison received a British patent while Tesla did not. In 1898, Horace Short developed a mechanism for amplifying sound using compressed air and he sold the rights to Charles Parsons. Record companies then began selling record players that used loudspeakers with this system.

Ernst von Siemens

Speakers

3) The First Telephone

The intention of telephone was the culmination of work done by many individuals, and involved an array of lawsuits founded upon the patent claims of several individuals and numerous companies. The telephone was invented by Alexander Graham Bell.

Alexander Graham Bell

Telephone

4) The First Computer

The first mechanical computer, created by Charles Babbage in 1822, doesn't really resemble what most would consider a computer today. Therefore, this document has been created with a listing of each of the computer firsts, starting with the Difference Engine and leading up to the computers we use today.

Charles Babbage

Computer

5) The First Mouse

The computer mouse as we know it today was invented and developed by Douglas Engelbart, with the assistance of Bill English, during the 1960's and was patented on November 17,1970.

Douglas Engelbart

Mouse

6) The First Headphone

Headphones originated from the telephone receiver earpiece, and were the only way to listen to electrical audio signals before amplifiers were developed. The first truly successful set was developed in 1910 by Nathaniel Baldwin, who made them by hand in his kitchen and sold them to the Unites States Navy.

Nathaniel Baldwin

Headphones