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Computer Networking
Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.
18,810 Questions
What connectors do a twisted pair of cables use?
A modular plug connector and cable assembly comprises a modular plug with a wire holder, and a twisted pair cable. The twisted pairs are braided in order to cross over conductors of the twisted pairs, and furthermore to separate the pairs of conductors and from and in order to reduce inductive and capacitive coupling therebetween. The wire holder helps to keep the pairs twisted and the straightened end portions of the conductors as short as possible. The cable assembly as described provides low cross talk and enables consistent termination with little deviation in the signal transmission speeds.
Twisted Pair that is generally used for networking uses "RJ45" connector and twisted pair used in phone lines uses "RJ11".
There other RJ (Registered Jack) connectors too for different twisted pairs types.
What vulnerability is most likely to be exploited by an external threat to the infrastructure?
disgruntled employee
Software Flaws
Name resolution is a function of DNS (Domain Name System). Computers do not use names to communicate with each other in TCP/IP networks or on the Internet. Instead, they use IP Addresses. An IP Address is a series of numbers (IPv4). For example, the IP Address for this site (wiki.answers.com) is 67.196.156.25. That is not exactly a number that most humans will find easy to remember. In order to be able to type http://wiki.answers.com/ into your browser and get to the site successfully, your computer has to contact a DNS Server. The DNS Server will take the name you pass it, and return an IP address. Your computer will then use this IP Address to communicate with the remote web server, and then your browser can display the page. Without DNS, you would have to know the IP address of every server you wanted to connect to.
What is the binary number for IP address 172.16.5.20?
ip add consist of four octets separated by dot. each octet consist of 8 bits. see below.
xxxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx;
each bit per octet has an equivalent decimal value, the first bit, the right most bit, the equivalent value of that is 1 then the next bit is 2 then 4, 8, 16, 32, 64 and 128. as you notice you just multiply by 2 starting from the first bit. 2 is our multiplier because binary is using the power of 2. if all the eight bits are 1 then the decimal equivalent of that is 255 just simply add all the decimal equivalent of each bit and you will get 255. so if you will convert 172 into binary that will be 10101100. if you add those decimal equivalent of those with 1 you will get 172. just always remember the decimal equivalent of each bit in an octet.
1 1 1 1 1 1 1 1
128 64 32 16 8 4 2 1
to complete your question, see below answer.
172.16.5.20 = 10101100.00010000.00000101.00010100
What is the best tool to monitor network traffic?
A complex question with many different options at many different price points. If you want to get the most insightful data, you'll want switches and routers that are NetFlow enabled, and something like NetCrunch 8 that can read and display the collected data.
Some users have reported Yahoo! Chat and Upnp as using these ports, but there doesn't seem to be an "official" use of port 5000.
TCP Port 5000 may use a defined protocol to communicate depending on the application. A protocol is a set of formalized rules that explains how data is communicated over a network. Think of it as the language spoken between computers to help them communicate more efficiently.
What is the fastest wireless router?
The most expensive consumer grade wireless router to date is the Apple Airport Express Time Capsule Edition.
The Router includes a print server, ftp server, wireless N, gigabit Ethernet, and a massive 2TB of network storage.
Retail price before tax is $499
http://www.apple.com/wifi/
What enables workstations that are not connected to a server to share documents?
That's part of the operating system. You don't need to install specialized software.
That's part of the operating system. You don't need to install specialized software.
That's part of the operating system. You don't need to install specialized software.
That's part of the operating system. You don't need to install specialized software.
Why are link state protocols more efficient than RIP?
They forward only changes to individual routes instead of forwarding entire routing tables., taking up less band and time. Joseph G.
How are layer 2 switches similar to layer 3 switches?
A layer 2 switch at it's core only forwards data within a LAN and only deals with MAC addresses. A layer 3 switch has the capability of forwarding frames and packets because it understands IP addresses.
Router(config)#
What is an Internet ready computer system?
a computer that you dont have to set the internet up on but is already set up
What is memory address register?
Whenever anything is stored in the memory of your computer (RAM) it is stored at a specific place. Each specific place in your memory has its address that can be used to tell computer programs to go to those addresses to perform actions on the object stored at that address.
It is similar to how you have your house number.
How do you connect to free wireless hot spots with laptop?
When you go somewhere that has a wireless connection it will say, "Wireless connection detected". You will have to go and click the button that showed this message to chose that wireless connection and connect to it.
Which port is used to connect your computer to a network?
The "Ethernet Port" Obviously is used for the Ethernet cable which often connects computers to a router. A router is a device that gets the Internet or from the phone/Internet port and routes it to your computer routers are required for ADSL and ADSL2+ to work. Oftener more than one computer is connected to the router. But this setup may be different for "Cable Internet because i have never had cable.
What is meant by the term bit per second?
It is a binary digit and computers use it to store and process data. A single binary unit is called a bit which stands for binary digit. Computer memory is measured in bytes. One byte is made up of eight bits.
Which option is the most secure type of user authentication?
Which of the following would be the most secure way of authenticating? a. Using a 20-character password
b. Using a smart card and a PIN
c. Using a password and a PIN
d. Using two different passwords at once
What is the advantage of using interrupt initiated data transfer?
It does not require the continuous checking of I/O port by the computer . The computer checks the port only when an I/O interrupt is encountered . It saves processing time.
similar to the meaning 'whatever', 'not true!', or ' yeah right!'.
example:
person 1 - "I love you most, end of story!."
person 2 - "pfft."
What is the job of dns servers?
A DNS server takes a domain or computer name and returns an IP address. This is a transparent function that is related to websurfing and many other network processes.
A DNS server translates a computer or domain name to the associated IP address.
Difference between Microsoft Word and ms PowerPoint?
Excel is a spreadsheet program, and PowerPoint is a program for making slide shows.
Power Point:
- A multimedia maker
- Generally used to make slide shows
- Also capable of making "mini games"
- You can import pictures and text into it
- You can use different formats and functions
Exel:
- A data base creator
- Generally used to make lists and address books
- Also capable of mail mergeing
- You can import pictures and text into it
- You can use mostly tables
So as you can see they are mostly different, I myself prefer PowerPoint in most projects though!!!
