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The backbone area (also known as area 0 or area 0.0.0.0) forms the core of an OSPF network. All other areas are connected to it, either directly or through other routers. OSPF requires this to prevent routing loops. [15] Inter-area routing happens via routers connected to the backbone area and to their own associated areas.
Also referred to as Summary-LSA in OSPFv2. 4 0x2004 Inter-Area-Router-LSA Also referred to as ASBR-Summary-LSA in OSPFv2. 5 0x4005 AS-External-LSA Also referred to as External-LSA or AS-External-LSA in OSPFv2. 6: 0x2006: MOSPF-LSA Deprecated in OSPFv3 (may be reassigned) Was referred to as Multicast-OSPF-LSA in OSPFv2. 7 0x2007 NSSA-LSA
Packet Tracer is a cross-platform visual simulation tool designed by Cisco Systems that allows users to create network topologies and imitate modern computer networks.The software allows users to simulate the configuration of Cisco routers and switches using a simulated command line interface.
Expensive due to the number and length of cables needed to wire each host to the central hub. [3]The central hub is a single point of failure for the network.; Each device needs a separate cable connection to the central hub, leading to higher cable usage.
Device configuration overlay (DCO) is a hidden area on many of today's hard disk drives (HDDs). Usually when information is stored in either the DCO or host protected area (HPA), it is not accessible by the BIOS (or UEFI), OS, or the user. However, certain tools can be used to modify the HPA or DCO.
The concept of a single point of failure has also been applied to fields outside of engineering, computers, and networking, such as corporate supply chain management [6] and transportation management. [7] Design structures that create single points of failure include bottlenecks and series circuits (in contrast to parallel circuits).
A storage area network (SAN) or storage network is a computer network which provides access to consolidated, block-level data storage. SANs are primarily used to access data storage devices, such as disk arrays and tape libraries from servers so that the devices appear to the operating system as direct-attached storage .
A computer lab is a space where computer services are provided to a defined community. These are typically public libraries and academic institutions . [ 1 ] Generally, users must follow a certain user policy to retain access to the computers.