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Thursday, March 21, 2013

How to Configure IP on Windows

There are two ways to configure the IP in Windows:
1. By using "netsh" the comment prompt, and
2. By using the "My Network Place" on the control panel.

As for the explanation as follows:

1. By using "netsh"

a. First we open Comment Prompt,
b. Then type "ipconfig" to see / know the IP Address, Subnet Mask, and Default Gateway that is on your computer (eg previous IP 192.168.36.12 255.255.255.0 192.168.36.1).
c. Once we know the IP Address, then we are ready to change the IP Addres according to our wish.
d. Type "netsh interface ip set address name =" Local Area Connection "static 192.168.36.36 255.255.255.0 192.168.36.1 1", press enter.
e. Once the process is finished type back "ipconfig" to see the results of the configuration we have created.


2. By using My Network Place

a. First we see the first IP address on your computer by typing "ipconfig" at the prompt comment.
b. Once we know the IP first, the next step is to open the "Control Panel", then double click on the icon "Network Connection".
c. Right click on the NIC (Network Interface Card) that we want to configure, then select "properties".
d. Then a new window will appear and select "Internet Protocol (TCP / IP) and click" properties ".
e. Enter the new IP address in the "Use the Following IP Address", and then click OK.

Similarly several ways to configure the IP in Windows.
Hope can be useful.

Simple Network Configuration with Simple Topology (Mikrotik IV)

Configuration Simple Network will discuss how to use MikroTik Router to connect to the internet by a simple topology shown in the picture. Hopefully with this simple guide, you can slightly understand the concept or how the mikrotik.

Simple Network Configuration


Modem configuration will not be discussed here because each modem has its own way or technique. To note the IP address of the modem is 192.168.1.1. As for the PC (host) does not need to be configured but will be discussed in the next article about Setting DHCP Server. PC will be using the IP Address starting from 2-254 or 192.168.2.2 to 192.168.2.254.

Summary :: IP ::

Modem IP Address: 192.168.1.1
Mikrotik ether1 IP Address: 192.168.1.2
Mikrotik ether2 IP Address: 192.168.2.1

So, to begin our first configure the IP address of Mikrotik:

> Ip address add address = 192.168.1.2/24 interface = ether1 comment = "to the IP Modem"

> Ip address add address = 192.168.2.1/24 interface = ether2 comment = "IP to the PC / Switch"

Configuring the DNS Server. Ask the ISP DNS server or here in demonstrated by using Google DNS 8.8.8.8

> Ip dns set servers = 8.8.8.8 allow-remote-requests = yes

Add using interace that is connected to the modem / internet with action = masquerade chain = srcnat position. With this technique, a network that uses private IP addresses can connect to the Internet.

> Ip firewall nat add chain = srcnat out-interface = ether1 action = masqurade

The final stage, add the default gateway (IP Modem)

> Ip route add dst-address = 0.0.0.0 / 0 gateway = 192.168.1.1

Make a check, if it is successful

> Ping www.google.com

Wednesday, March 20, 2013

Computer Network Types

Computer Network TypesThe main reason for separating MAN as a special category is the already-determined standard for MAN, and the standard is now being implemented. Standart is called DQDB (Distributed Queue Dual Bus) or according to the standard IEEE 802.6. DQDB consists of two unidirectional wires where all the computers are connected, as shown in Figure 1.2. Each bus has a head-end device to start transmitting activity. Computer traffic going to the right of the top of the sender using the bus. Traffic to the left using the bus under.

We will follow traditional usage and call these machines as hosts. The term End System is sometimes also used in the literature. The hosts are connected by a communication subnet, or simply called a subnet. The task is to bring the message of the subnet host to another host, such as phone systems that carry the conversation from the speaker to the listener. By separating the pure communication aspects of a network (subnet) from the application aspects (the host), the complete network design becomes much simpler.

In most WAN, subnet consists of two components, namely the transmission cables and switching elements. Transmission cable (also called a circuit, channel, or trunk) move bits from one machine to another.

Switching element is a special computer that is used to connect two or more transmission lines. When the data cable to the receiver, switching element must choose wired sender to forward messages. Unfortunately there is no standard terminology in the computer name like this. His name is variously called packet switching node, intermidiate system, data switching exchange and so on.


In general, a computer network can dibedekan consisting of five types:

1. the LAN (Local Area Network)

Local Area Network (LAN) is a network of personal property within a building or campus-sized to several kilometers.
LAN is often used to connect personal computers and workstations in company offices or factories for use as a resource (eg, printers, scanners) and exchange information. LAN can be distinguished from other tissue types based on three characteristics: size, transmission technology and topology.

LAN has a limited size, which means that the transmission time in the worst condition are limited and can be known in advance. By knowing keterbatasnnya, causing the possibility to use a certain type of design. It also facilitates network management.

LANs often use a single cable transmission teknologih. Traditional LANs operate at speeds ranging from 10 to 100 Mbps (mega bits / sec) with low delay (tens of micro-second) and has a small error factor. Modern LANs can operate at higher speeds, up to hundreds of megabits / sec.

2. MAN (Metropolitan Area Network)

Metropolitan Area Network (MAN) is basically a LAN version of the larger size and usually use the same technology to the LAN. MAN can include corporate offices are adjacent and can be used for private purposes (private) or public. MAN usually mamapu support voice and data, and can even relate to the cable television network. MAN only have one or two and do not have cable buiah switching element, which serves to regulate cable package with multiple outputs. The existence of switching elements to make the design become simpler.


3. WAN (Wide Area Network)

Wide Area Network (WAN) covers a wide geographical area, sertingkali covering a country or continent. WAN consists of a collection of machines intended to carry out the application programs.


4. Wireless Network

Mobile computers such as notebook computers and personal digital assistants (PDA), a branch of the computer industry is the fastest growing. Many kinds of computer owners who actually have desktop machines installed on a LAN or WAN but because the cable connection is not possible in a car or an airplane, there are many who are interested to have a computer to the network without wires.

Wireless networks have many benefits, which have been commonly known is the portable office. People who were on the way often like to use his portable electronic devices to send or receive calls, faxes, e-mails, reading fail remotely log into the remote machine, and so on, and also want to do these things anywhere, land, sea, air.

5. Internet

Actually there are many in this world networks, often using hardware and software that is different. People who are connected to the network are hoping to be able to communicate with other people who are connected to other networks. Desires such as these require a network connection between the often kampatibel and different. Normally to do this requires a machine called a gateway to engage and carry out the necessary translation, both hardware and software. Collection of interconnected networks is called the internet.

Definition of Computer Networks

Computer Networks : Understanding Computer Networks
Computer Networks

Understanding of computer network is a collection of computers and other devices supporting computers connected together in a unity. Media computer network can be via wires or wirelessly enabling network users are able to exchange information, such as documents and data, can also do the printing on the same printer and together using the hardware and software are connected to the network. Each computer, or devices that are connected in a network is called a node. In a computer network can have two, tens, thousands or even millions of nodes.

Computer Network is a group of autonomous computers interconnected with each other using a communication protocol through the medium of communication so that they can share information, programs - programs, use of shared hardware such as printers, hard drives, and so on. Besides computer network can be defined as a collection of a number of communication terminals located in various locations consisting of more than one interconnected computers.

Benefits gained in building computer networks, namely:

    Sharing resources

Sharing resources intended for the entire program, equipment or other peripherals can be utilized by any person who is on a computer network without being influenced by the location and the influence of the user.

    Media Communication

Computer networks allow communication between users, both for the teleconference and to send a message or other important information.

    Data Integration

Computer networks can avoid reliance on a central computer, because every process data should not be done on one computer only, but can be distributed to other places. Therefore, it is then able to form an integrated data that allows users to acquire and process information at any time.

    Development and Maintenance

The development tools are simple and cost-saving, because every purchase components such as printers, so no need to buy a computer printer there but just one piece because the printer can be used together - together. The computer network also allows users to take care of the hard drive and other equipment, for example, to provide protection against virus attacks the wearer enough to focus on the hard drive on a computer center.

    Data Security

Computer Network Systems can provide protection against data. Since the granting and setting permissions to users, as well as technical protection against hard drive so that the data get effective protection.

    More Resource Efficient and Current Information

With the use of shared resources - together, will get the maximum results and high quality. In addition the data or information accessed is always new, because any changes that occur can be readily immediately known by every user.

WHAT IS COMPUTER OPERATING SYSTEM

Understanding Computer Operating system is a computer software or that is tasked to carry out the control and management of hardware and basic system operations, including the execution of software applications such as data processing programs that can be used to facilitate human activity. Operating System in English called the Operating System, or regular short OS.

Operating System software on your computer is the first layer that is placed on a computer memory (memory of the computer in this case there is the hard drive, not memory ram) when the computer is turned on. While other software is run after the computer operating system is running, and the OS will perform core public services for that software. Common core services such as access to the disk, memory management, task scheduling, and user interfaces. So that each software no longer have a common core tasks, because it can be served and performed by the operating system. Sections of code that perform core tasks and general named by an operating system kernel.

Operating Systems serves as a liaison between the hardware layer and the software layer. Than that, the computer operating system as well do all important commands in the computer, and ensure that different applications can run smoothly functions simultaneously without a hitch. Operating Systems Computers warrant application software others can use the memory, performs input and output to other equipment, and have access to the file system. If several applications are running simultaneously, then the Operating System Kompute r will arrange the exact schedule, so as much as possible all the processes running on the computer to get enough time to use the CPU and not to interfere with other devices.

Examples of such computer operating system is Windows, Linux, MacOS, and others. Below is the user interface operating system Windows 7, Linux (Ubuntu), and Mac OS X



 

Kind of - kind of Computer Operating Systems


In general, the Operating System is the software on the first layer is placed on the computer's memory when the computer is turned on. While other software is run after the operating system is running, and the OS will perform core public services for that software. Common core services such as access to the disk, memory management, task scheduling, and user interfaces. So that each software no longer have a common core tasks, because it can be served and performed by the operating system. Sections of code that perform core tasks and general called the "kernel" an Operating System.

Operating systems generally consist of several parts:


1.Mekanisme Boot, which puts the kernel into memory kernel, the kernel can be considered as the core of the operating system.

2.Command Interpreter or Shell, duty to read the input in the form of commands and provide some standard functions and basic functions that can be called by applications / programs maupub other software. Examples of Shell are: Command Prompt in Windows XP (DOS in Windows 98), XTerm and Konsole on Linux machine (Unix).

3.Driver to interact with the hardware as well as control the performance of hardware.

4.Resource Allocator. Operating System responsible for managing and allocating resources of the device.

5.Handler. Handler plays a role in controlling the system in order to avoid mistakes (errors) and use of resources unnecessarily.

Now we will consider the history and development of the Operating System.

According Tanebaum, Operating Systems has developed can be divided into four generations.

Early 1.Generasi

The early development of the Operating System is still done manually in a sense yet to emerge any Operating System that automatically means the service does not yet support the work that can be done in one series.

Both 2.Generasi

In this generation has been the introduction perkejaan to do in the first series or referred to Proccessing Batch System.

Third 3.Generasi

In the third generation, operating system already supports the Multi-User, Multi-Programming and Proccessing Batch System (Multi-Task).

Fourth 4.Generasi

At this time, it is permitted to GUI (Graphical User Interface), which means that the Operating System has a look and to capitalize mouse, End-Users can run applications / porgram or software.

Furthermore 5.Generasi

In the next generation operating system that was introduced in an Operating System, this is an example of an Operating System berbasikan Websites that work in an Operating System. And next-generation mobile operating system diperkenalkanlah (Mobile) on mobile devices such as PDAs, Pocket PCs, and so forth. In the next generation Operating System technology introduced also its virtual network, so the network is only installed in 1 1 piece OS on devices assigned to servers. In addition, it also introduced Cross Platform Operating System that is meant to combine two different Operating Systems such as Linux and Windows.

Today, almost all people have a PC and Mobile PC. Due to the price factor that is always changing and the human need for automated tools such as: PC, then man made the PC as a primary need. Along with the development of PC technology was made in quick order to serve as a mobile automation tool (Can be used anytime, anywhere and by anyone). Examples are moving PC: Laptop, Notebook and Netbook, the three devices also have operating system like a PC. And now it's time we discussed the existing operating system on your PC.

- WINDOWS (MICROSOFT WINDOWS)


Mircorost Windows or ordinary we are greeted with the title Windows Operating Systems developed by Microsoft Corporation that uses berbasikan interface with GUI (Graphical User Interface) or bergrafis interface.

Initially Windows started from Ms-Dos (Microsoft Disk Operating System) is a text-based operating system and Command-Line interpreter. The first version of Windows, Windows Graphic Environmnet 1.0 is a software that works on arsitekstur 16-Bit and is not an operating system and runs on MS-DOS, so to run it requires MS-DOS. MS-DOS was actually made by a computer manufacturer Seattle Computer Products, and then was recruited by Microsoft which then purchased the license.

Later evolved into the first version of Windows 1.0 Operating System in the world Operating System based GUI (Graphical User Interface) and supports Multi-Tasking or can manage numerous tasks simultaneously. After that developed Windows 1.0 to Windows 2.0, Windows 2.0-based GUI and supports the use of VGA (Video GraphicsArray) and also supports Multi-Tasking. Windows 2.0 also supports the use of Intel 80286 processor which Intel 80286 processor is the first processor with the ability to protect the memory area.

Then proceed with next-generation Windows 3.0 Windows 3.0 which has the same ability with previous Windows and added support SVGA or XGA graphics card and also a better icon. In that era, Microsoft also provides SDK (software development kit) so that software developers can develop applications / programs to be able to run on Windows 3.0 was. Windows 3.0 also introduced the Virtual Device Drivers (VXD) which can be useful to minimize dependence on any specific hardware drivers. Windows 3.0 and then evolved into Windows 3.1 that has been introduced with features True Type Fonts Multimedia and it is also easier due to End-User Drag and Drop and eventually Windows version 3 has grown to be already familiar with Operating System Networking (Windows 3.11).

Having finally grown long enough Operating System Microsoft introduced a hybrid 16-Bit/32-Bit known as Windows 95. Many of the changes from previous versions of Windows, namely Windows 95 has a GUI is more interesting and attractive, supports Plug and Play, supports long names, has several amenities such as: integrated browser and Windows Explorer to browse Windows. In addition, Windows 95 has the features to manage the power (APM) and also the introduction of Client-Server.

The next generation of Windows 95 is a Windows 98 Windows 98 which supports VGA AGP-based, and supports quick storage media such as USB, the introduction of NAT to share Internet connections and replaces Virtual Device Drivers with the Windows Driver Model. There are also some additional features such as Microsoft Office and Internet Explorer version 5. Windows 98 also has capabilities to play games and run multimedia applications.

Further development is Windows ME, nothing special other than the transition from Windows ME graphics support of 16-Bit to 32-Bit and Windows ME era many home users who use it. Windows ME was akhrinya replaced by Windows NT that supports arsitekstur x86 (80 × 86), Intel IA64 and AMD64 (x64) and 32-Bit graphics support. Windows NT was actually built from the development of the IBM OS / 2 and Windows NT are also widely used in computer networks. Windows NT File System NTFS also introduces better than FAT or FAT-32.

Further developing Windows NT to Windows 2000 many additional features including: Active Directory, Image Preview, Internet Explorer Browser v6, DirectX and Open GL, Plug and Play and Windows Driver Model better performance than before. After generations of Windows NT munculah Windows XP offers many changes, has many more features and performance mengingkat. You could say Windows XP is the best-selling Windows and loved by the users PC and mobile PC devices (Mobile). Along with the need for networking then Microsoft Operating Systems Corporation issued concentrate on networks: Windows Server 2003. You could say Windows Server 2003 is the reincarnation of Windows NT.

Lots of features offered in Windows Server 2003 is one of them is the introduction of the platform. Net. Introduced also feature a Domain Controller Server, PKI (Public Key Infrastructure) Server, Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), Windows Internet Name Service (WINS), Microsoft IIS, and so forth. Microsoft also continue the development of the operating system with Windows Vista (Longhorn), this is a revolution of Windows XP. Windows Vista prefer the interface or interface graphics performance compared to the performance, evidenced by the features: AERO, Sidebar, and so forth.

Windows Vista also offers a better level of security compared to Windows XP, since Windows Vista introduced the Windows Firewall with Advanced Security, Windows Defender, Parental Control, User Account Control (UAC), BitLocker Drive Encryption, ASLR. Windows Vista has also been known IPv6, the latest version of DirectX, and arsitekstur 64-Bit. Further development is the transition from Windows Server 2003 to Windows Home Server as File Server intended for home. Windows Server also introduces several technologies, namely: Headless Operation (The server does not need a monitor or keyboard for memanjemen device), remote control, health monitoring computers, Sharing and Streaming.

The next generation is characterized by the emergence of merger Operating System Windows Vista with Windows Server, Windows Server 2008. Features of Windows Vista and Windows Server combined into a single coherent to improve the safety and comfort of End-User. Further developing Windows Server 2008 to Windows Server 2008 R2. The final version of Windows Operating System is made by Windows 7, Windows 7 was released to replace the lack of Windows XP and Windows Vista excess. Perhaps if Windows 7 is said to be a fusion of the Windows XP and Windows Vista, unlike Windows Vista, Windows 7 has better performance than Windows Vista.

- UNIX


UNIX is an operating system created by Ken Thompson and Dennis Ritchie, developed by AT & T Bell Labs. UNIX is designed as a portable Operating System, Multi-Tasking and Multi-User. UNIX Operating System more emphasis on Workstation and Server, Because of the high availability and compatibility causes UNIX can be used, copied and modified so that UNIX was developed by many people and caused a lot of variants of UNIX.

UNIX itself is written in C language that is similar to the DOS UNIX is Line / Text Command Based otherwise it was a UNIX Operating System secure than other operating system, because every file, directory, user and group has its own set of permissions to access. Because of the support for the GNU Project, we then developed into LINUX UNIX (One variant of UNIX).

- LINUX


Originally developed by Linus Torvalds, who was originally just a terminal emulation required to access the UNIX servers in the university. Linux is a clone of MINIX (One variant of UNIX), system equipment, and libraries usually come from the GNU Operating System. Linux has a lot of design that comes from the basic design of UNIX, Linux uses the Linux kernel Kernel Monilitik handling prosses control, networking, peripherals, and file system access. Just like UNIX, Linuxpun can be controlled by one or more command-line interface (Command Line Interface / CLI) text-based, graphical user interface (Graphical User Interface / GUI) which is the default configuration for dektop version.

On the computer desktop, GNOME, KDE and Xfce are the most popular user interface user interface among other variants. A Linux system provides a command line interface via a Shell (Console). The main difference between Linux and other Operating Systems Popular lies in the Linux kernel and its components are free and open. Just like on UNIX, Linux Workstation and Server concentrates on many workstations and servers that rely on Linux because Linux is very stable used for a long time and Linuxpun immune to malware.

One thing that differentiates Linux on other Operating Systems is the price. Price is mostly Linux Free although some are paid (License). Linux can be distributed without having to give royalty to someone. Linux is based on standard POSIX Operating Systems derived from UNIX itself. There are several types of Linux distributions, such as Debian, Lycoris, Xandros, Lindows, Linare, Linux-Mandrake, Red Hat Linux, Slackware, Knoppix, Fedora, Suse, Ubuntu.

- IBM OS / 2


Operating Systems IBM OS / 2 was made jointly by the International Bussiness Machines Corporation and Microsoft Corporation, for use on IBM computer instead of the DOS operating system. Said OS / 2 is short for Operating System / 2, Operating System is designed to use the full capabilities of the Intel 80286 microprocessor, including the Protected Mode (Protected Mode), able to run simultaneous tasks, and support for virtual memory, while maintaining compatibility with many MS-DOS software in circulation at the time,

- MAC OS (MACINTOSH OPERATING SYSTEM)


MAC OS or Macintosh Operating System is Operating System created by Apple Computer specifically for Macintosh computers and is not compatible with IBM-based computers. MAC OS is the first operating system that uses a graphical user interface (Graphical User Interface / GUI). Macintosh Operating System is divided into 2 types:

1.MAC OS Classic

Do not have any Command Line (Command line), using the User Interface (UI) completely and use Cooperative Multitasking

2.MAC OS X

MAC OS X incorporate elements of BSD Unix, One Step, and MAC OS X has a Unix-style memory and pre-emptive multitasking.

Excess MAC OS:

1.Stabil, because using UNIX.

2.Multitasking.

3.Tampilan (UI) is very good.

4.Aman from Malware.

MAC OS X is a line of computer operating system developed, marketed by Apple Inc, Mac OS X is the successor of the MAC OS (Classic). MAC OS X is built on top of xnu kernel, with standard Unix facilities available from the command line interface.

- Chrome OS


Chrome OS is Google's operating system that is lightweight and Linux-based and web standards for personal computer PC. Google Chrome works with Windowing method or switching (multi-tasking). Google Chrome OS using a standard web HTML 5, which is the development of software in a browser-based operating system. If seen look, Chrome OS is a combination of Linux and Windows Vista. Chrome OS was released in mid-2010.

There are so many different kind of computer operating system that continues to evolve, No Operating System perfect for each operating system has its own characteristics and resources. Although there is a paid OS, why do not we try a Free Operating System or free? Free does not mean bad, good or bad depends on an Operating System End-user should own. So we must be careful in choosing the Operating System in use.

Tuesday, March 19, 2013

Android Game Sequel Soldier Of Glory Modern Wars 2


For fans of games like Command and Conquer and Warcraft tower defense game, so this time there is a game that combines the two types of games are the games Soldier or Glory: Modern Wars 2. Games made from game publishers Cat Studion Inc. is a new type of game Tower Defense. This game is supported by sophisticated weapons systems, and can make you addicted to play this game Modern Wars 2. You can download the game Soldier of Glory: Modern Wars 2 for free on the Android Market application store.

Gameplay and Controls Soldier Of Glory: Modern Wars 2

From the gameplany, Soldier of Glory game: Modern Wars has a war strategy gameplay where you can play as two people who at the time were fighting the Americans and Nazi nation. At the beginning of this game, you will be guided to be able to know in advance the navigation game in Soldier Of Glory game: Modern Wars 2's. Some introduction to basic navigation of this game is like the construction of tower defense, using magic and system controls in the game Soldier Of Glory: Modern Wars 2's.

This game comes with some ultimate weapon that can help you to be able to defeat multiple enemies at once, some ultimate weapon is like a nuclear weapon, Electrical, and bomber aircraft that you can use to be able to defeat multiple enemies at once with a single shot, but you also can not rely on this kind of ultimate weapon, because in every mission also has a different challenge, you can use your defense weapon to defeat the enemy aircraft.

The challenge in this game is how you can build a weapons system to defeat the enemy aircraft with a weapon weight. Several enemy planes were also seen to have different strengths. In the early stages of game play Soldier of Glory: Modern Wars 2 is, you can begin to build a defense system with a cheap weapon, after that you can start to add a little bit of spring with a more powerful weapon.

You can also upgrade any weapon in the game Soldier of Glory: Modern Wars II is a force greater damage, such as the rocket launcher system that you can upgrade faster. There are several types of weapons in the game Soldier of Glory: Modern Wars II, you can combine several types of weapons to the advantages of each weapon.

Controls in the game is also quite easy, that you just need to choose some kind of weapon in the game Modern Wars, and put the weapon system in accordance with your wishes. This game can also be your setting by using three levels, namely levels easy, normal and hard. Each level in the game has some kind of different difficulty levels. Herein lies the challenge in playing this type of game, where you can win every mission by force of arms.

 Modern Wars 2


In terms of graphics, game Solider Of Glory: Modern Wars 2's have a look at games like command and conquer, with a view of the background of the second world war era, and with different types of interesting aircraft. Soldier of Glory Game: Modern Wars 2 is also equipped with a system that supports sounds, like the sound of pounding bullets being shot, as well as the effects of some magic in the game Modern Wars 2 makes this game more interesting to play.

Soldier Of Glory Android game: Modern Wars 2

 Modern Wars

For those who love tower defense game with a game format command and conquer like games, then you can play the game Soldier of Glory: Modern Wars 2, the games made from game publishers Cat Studio Inc. is one type of tower defense games are very interesting, with game combines strategy with tower defense game. Download here


Enable USB Debugging on the Nexus 4

Nexus 4

For those of you owners of phones Android would have been familiar with USB Debug feature which is required to be activated before tinkering with Android . Besides can be used to install a custom ROM or rooting, USB debugging is also required for the application to PC Suite to recognize poonsel default phone when connected to a PC.

Given a vital presence in the backup and restore the phone, it knows how to activation of course is very important for the user.

However, for security reasons, Google apparently has decided to hide the USB debugging capability activation that began to be applied to all phones with OS Android 4.2 Jelly Bean is no exception iconic phone LG Google Nexus 4 . Then where the USB debugging is hiding? Please consider the following tips:

1. Go to settings through the shortcut contained in the notification bar.

Nexus 4 1


2. After getting into settings followed by rolling down the screen until the "about phone"
Nexus 4 2


3. Once entered into the "about phone", please tap "build number" seven times in a row until the message "you are now developer"
Nexus 4 3


4. After that touch the virtual button "back", then the "Developer options" will appear and you can now enable USB Debugging as usual.

Nexus 4 4