Flashcards in 3.0 Hardware Deck (37)
Dual Core vs Hyperthread Technology
Dual Core - that is a CPU with two physical cores
Hyperthreading - that is one CPU with one core, but acts to the operating system that it has two cores, multitasking based.
Hyper-threading was Intel’s first attempt to bring parallel computation to consumer PCs. It debuted on desktop CPUs with the Pentium 4 HT back in 2002. The Pentium 4’s of the day featured just a single CPU core, so it could really only perform one task at a time—even if it was able to switch between tasks quickly enough that it seemed like multitasking. Hyper-threading attempted to make up for that.
Originally, CPUs had a single core. That meant the physical CPU had a single central processing unit on it. To increase performance, manufacturers add additional “cores,” or central processing units. A dual-core CPU has two central processing units, so it appears to the operating system as two CPUs. A CPU with two cores, for example, could run two different processes at the same time. This speeds up your system, because your computer can do multiple things at once
What Google Backs Up Automatically?
- Contacts, Email, Docs, and Calendars
- Chrome Browser Data
- Purchased Apps
Microsoft Hyper-V supports three different types of virtual networks: external, internal and private. External virtual networks are the most commonly used because they allow a virtual machine (VM) to access the outside world. Internal virtual networks are isolated segments accessible by VMs and by the Hyper-V host, while private virtual networks are only accessible to VMs.
With its 32-bit address format, IPv4 can handle a maximum of 4.3 billion unique IP addresses. While this number may seem very large, it is not enough to sustain and scale the rapidly rising growth of the Internet. Although improvements to IPv4, including the use of NAT, have allowed the extended use of the protocol, address exhaustion is inevitable and could happen as soon as 2012.
With its 128-bit address format, IPv6 can support 3.4 x 1038or340,282,366,920,938,463,463,374,607,431,768,211,456 unique IP addresses. This number of addresses is large enough to configure a unique address on every node in the Internet and still have plenty of addresses left over. It is also large enough to eliminate the need for NAT, which has its own inherent problems.