At functional one which the rooter and the like has, make the packet of the VPN client pass who had the private address inside LAN on Internet side.

When with the function of NAT and the like which, converts global IP address and private IP address from the machine inside LAN the connection to Internet it mediates in the rooter which is categorized to the boundary of Internet and LAN, but the machine inside LAN forming network and VPN outside, when we would like to do communication, the address translation of NAT and the like is done when VPN communication does not go well is many.

Because of this, as for the packet for VPN the function that is needed, it is made to pass that way, this is called VPN pass through. The protocol of IPsec and PPTP and L2TP etc is used in VPN, but in order to do VPN pass through, because it is necessary to correspond to these individually basic, it is necessary to verify it corresponds to pass through of some protocol.

VPS Virtual private server

Reading: The buoy tweet the s
Full spelling: Virtual Private Server
Alias:
Hypothetical private server
Field:
Internet > provider > VPS

At one of service list of items of the rental server, the common server the service which offers the function which hypothetically is equal to the private server. Rather than offering the private server physically, because cheaply, the function which is equal to the private server can be offered, each company rivaling, it has introduced. The special software is installed to the common server, like whether the individual user has manager authority (root authority) just of, by the fact that it sets, the function which it is possible to only the private server such that the software whose manager authority is necessary is operated is actualized.

* As for this terminology there is a possibility of being registered trade mark or in the midst of trade mark register applying. With the sight and the like of patent office please verify detailed examination register circumstance and the like with itself.

VR Virtual reality

Reading: Virtual reality
Full spelling: virtual reality
Alias:
Virtual reality
Field:
IT and society > VR > VR

Combining computer graphics and the sound effect, the technology which artificially creates present reality.

Simply, when such as “artificial present reality”, also the media expression for example such as the novel and the movie is included, but the element below is needed as the constitution important matter of VR. The experience possible hypothetical space (virtual world) construction and senses () approaching several inside, the immersion impression of being able (immersion), position of the object person and feedback to the feeling for operation (sensory feedback), the conversational characteristic which the object person can approach the world (interactivity) it is four. When constitution important matter it does three of rear, it is. If it illuminates in this standard, for example in the novel the immersion impression due to visual and auditory senses is lacking, because conversational characteristic is lacking in the movie, VR is not regarded.

VRAM Video RAM

Reading: Buoy ram
Full spelling: Video Random Access Memory
Alias:
Dual port DRAM and dual port DRAM
Field:
Personal computer > extended card > VRAM

The memory which keeps the contents which are indicated in display. Former times it could allot the portion of main memory, but recently there is many a thing where private RAM which accelerates to the video card is loaded. Largest resolution and the maximum frequency of simultaneous coloration of the picture are influenced by the capacity of VRAM.

VRML

Reading: Buoy earl m l
Full spelling: Virtual Reality Modeling Language
Field:
WWW > Production > VRML
Multimedia > graphics > 3 dimensional graphics > VRML

Language in order to express 3 dimensional graphics on WWW. It was lectured at the 1st WWW international conference which in 1994 was held in the Swiss Geneva, applied the technology of the Silicon Graphics corporation and VRML1.0 specification was decided. 1.0 So only the static space it could express, but after that with VRML2.0 which is decided it reached the point where it can add to object the movement. VRML2.0 was standardized in 1998 January as VRML97 with ISO.

VRRP

Reading: The buoy earl earl tweet
Full spelling: Virtual Router Redundancy Protocol
Field:
Network technology > network control > VRRP

Protocol in order to do multiplexing the rooter. You make the plural rooters belong which correspond to VRRP to one group, the rooter of one among usually those does communication, but when that rooter causes obstacle, the rooter which belongs to the same group succeeds communication automatically. The rooter which does communication in the identical group is limited to 1, but because one rooter can also belong to the group of groups, also it is possible to actualize load distribution simultaneously with setting.

VSYNC Frame synchronizing signal

Reading: Buoy sink
Full spelling: Vertical Synchronizing signal
Field:
Imaging > display > structure > VSYNC

The occasion where the picture is drawn with the television and CRT display, the signal in order to measure the timing of vertical direction. In these equipment the occasion where drawing is done, when the electron gun irradiates the beam with respect to the picture left, moves parallel to the right, reaches to right hand edge the single step going down, and it is irradiated from the left to the right. This is repeated to the lowest step, similar scan is repeated from with respect to the left. The case where these operations are done the fact that timing of vertical direction is decided is VSYNC. Frequency of this signal is called vertical scanning frequency, but when the language, VSYNC is used in sense of this frequency, it is.