() {DoubleDiscountprice=0.; Iterator ITER=Equipment.iterator (); for(Iter.hasnext ()) Discountprice+=( (equipment) iter.next ()). Discountprice (); returnDiscountprice; }//Note here that this provides a way to access parts of your own assembly. //The reason that disk is not there is because disk is a separate (Primitive) element. PublicIterator iter () {returnEquipment.iterator (); {//Overloaded Iterator Method Public BooleanHasnext () {returniequipment.size ();} //Overloaded Iterator
Juniper VSRX Firewall ha configurationTopological structure of experimental network650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/54/2B/wKiom1R6wn6S3GsPAACvyJKrKGQ317.jpg "/>Experimental objectives
Complete the failover configuration of the SRX firewall
Connectivity of test equipment
Experiment Configuration steps:
The GE-0/0/1 and GE-0/0/2 ports of the two VSRX firewalls are interconnected using a network cable or using ESXI or VM networks, and the GE-0/0/1 int
XP system Front Audio No sound is going on
1, inserted in the computer chassis after the audio interface has a sound to explain the computer sound card and drive is all normal, as for the computer front chassis no sound is mainly 3 possible. First of all to analyze the structure of the front chassis audio interface, the front of the
, emitting noise. The solution is to take a blade in the scratch place gently scraping a few, increase the distance between the fan and the wall, to avoid both friction.
Eliminates Hard drive noise
The noise from the hard drive may come from its own vibrations, and this is not just about making annoying noises, but about the security of the hard drive. Because the vibration caused by improper installation is likely to damage the hard drive, so the horizontal installation of the hard disk mus
Often have DIY installed friends will ask, buy motherboard what board type motherboard good Ah, is the choice of the motherboard or small board? For such a problem, sometimes very difficult to answer, because the installed time, the choice of motherboard board type is not only related to the chassis, but also with their own needs. Today, the computer Pepsi Net small make up to specific and everyone to talk about the choice of the motherboard board typ
First, check the driver
First of all to check whether the graphics driver caused by the beginning of such problems, from the graphics card official website updated driver half a month or so did not occur, so the graphics driver caused by the problem is the first thing we deal with this kind of situation to consider.
Second, the inspection system
After the driver problem is eliminated, it is necessary to consider whether the system problem, the boot constantly press F8 into the Windows Adva
USB (Universalserialbus), Universal Serial bus, as the most popular peripheral interface, can support multiple devices on the same port, up to 127 devices can be connected to use at the same time.
As early as 1995 began to appear with USB interface of the computer, but the lack of software and hardware set support, so most of them are idle, Microsoft in the Winriows98 operating system to support the USB interface module, USB interface is increasingly widely used in computer peripherals.
At pr
, together with each person's identity card stored in different information, such a key, that is, safe and convenient.
Electromagnetic lock
Commercial machine internal electromagnetic lock, the normal state of its latch out, the side plate and the chassis firmly locked together, only into the BIOS unlocked, in the electromagnetic lock power, lock the tongue back, in order to open the chassis n
The server Sun Fire B1600 Blade chassis is a 16-socket 3U chassis that installs two integrated gigabit Ethernet switches, two system controllers, and two power supplies. This smart frame is highly reliable and has a server density of five times times the typical single processor 1U server. The horizontally scalable Sun Fire B1600 blades are designed for throughput calculations that allow you to adapt to gro
Memory Bar We must not be unfamiliar, under normal circumstances are not management, but the time is long, because the chassis moved, dust accumulation, there will be a loose memory, computer memory strip How to solve it?
The phenomenon of malfunction:
Phenomenon 1: After the boot, the display is dark, the chassis issued "du-, du-" the long sound.
Phenomenon 2: After power on, the monitor interface sta
port) is not connected to the network cable. You can manually close the ALARM of the Management port and use this command in juniper:
# Set chassis alarm management-ethernet link-down ignore
# Commit
The light gradually becomes orange.
Add another command
# Set chassis alarm ethernet link-down ignore # No alert is generated when you set all ports
(Note: link-down can detect the port status. If you have set
Suppose there is a Web site, if the laptop as a server, that is, the release of the site and the site's database and a variety of materials are placed on the laptop, and if it is a desktop, the site's release and the site's database and various materials are placed in the desktop computer chassis;For laptops, the notebook itself has the capacity of the hard disk, and for the desktop, its hard disk capacity is in the
, re-boot is equivalent to re-acceleration of the hard disk in the slow state. If this happens, your hard drive will surely be lost.Solution: if you forget to do something after the shutdown, you can just put it down. You must finish it. Please wait for more than one minute and restart the system, or press the hot boot key on the chassis when the power is not disconnected. If none of the above methods are possible, I suggest you fasten a rope on the c
Recently, the customer needs to change the server. The customer sent the purchased server to a very small server. But when I saw it, it was a big, long, wide server, similar to the server in the data center, later, Mr. Mi gave a general explanation: This is a blade server.
A blade server is a low-cost server platform that can be inserted with multiple card-type server units in a standard-height rack-mounted chassis to achieve HAHD (High Availability a
be due to heat and deformation, touch the inner wall, emitting noise. The solution is to take a blade in the scratch place gently scraping a few, increase the distance between the fan and the wall, to avoid both friction.
Eliminates Hard drive noise
The noise from the hard drive may come from its own vibrations, and this is not just about making annoying noises, but about the security of the hard drive. Because the vibration caused by improper installation is likely to damage the
Due to the CPU when the heat generated by conduction to the heatsink to reduce the CPU temperature, and then the fan brought by the cold air blowing the heat away from the heat sink, and the heat of the fan can be transmitted by the size of the heat sink and how much the computer temperature is too high. Generally speaking, the heat sink and the air contact area is bigger, the fan's heat dissipation effect is better, but this kind of argument has certain premise, that is in the case that has eno
solvent is very easy to destroy the special coating, the display of a large discount.
Correct way: monitor screen including its shell, can not use alcohol, gasoline, detergent and other solvents, if conditions, please use a special display detergent. If the conditions are not available, you can buy a few bottles of pure water on the market to clean the display screen and the shell. In addition, the screen cleaning special care, do not use ordinary coarse towels, should buy 1~2 block quality be
deliberately put the price of these 3 accessories lower than other counters, let you pick up the feeling of cheap, in fact, in the graphics/motherboard/monitor on every piece can kill you more than 100. or to see the price of the whole machine.
Tip Three: Try to find an agent
For example, if you want to buy seven rainbow products, try to find agents of the brand stores or counters, or JS will strongly recommend you some high profit but not well-known brands. This time if you still insist on b
Computer chassis, the normal is only the power supply, the motherboard (MB), the central Processing Unit (CPU), memory (RAM), graphics processor (GPU, commonly known as the graphics card), hard disk (HD) These things just. Usually appear the temperature is too high have: GPU,CPU, motherboard this 3 kind. (according to the probability of the occurrence of excessive temperature) because the GPU and CPU is the computer's largest power consumption of two
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