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Why is the study of mapmaking called topology?
It isn't. You are thinking of topography, the study of surface geographical features. The study of map making as such is cartography. The etymology of the word topology is from the Greek words, tópos, meaning place, and lógos, meaning reason and discourse. Hence tópos-lógos --> topology --> place-reasoning. From tópos we also get the word topical and from lógos, logic.
In what massive database would you expect to find the daily temperature of the water in a specific coastal region?
An oceanic and atmospheric database
Which naming context contains forest-wide data about the physical topology of an active directory?
Schema
What is an enterprise database and how does it work with Geographic Information Systems GIS?
A database of information that be accessed by many individuals or a network for the use of editing, creating, and manipulating data and information. In GIS, an enterprise database schema is used to distribute and maintain geographic data in the same way.
How a user of a relational database refers to a field?
Attribute
What are OSPF Databases?
A "database" is a collection of information, often organized in tables. OSPF routers - i.e., routers that implement the OSPF routing protocols - need to maintain several databases, for example, a neighbor database (a list of connected neighbors), and a link-state database (a list of all the connections between different routers in the same area, which the router has learned about).
Compare and contrast the advertisements by RIP and OSPF?
RIP is an Interior Gateway Protocol and the most widely accepted routing protocol. It is also known by the name of the Unix daemon program routed. RIP is straightforward: it arranges to have routers to broadcast their entire current routing database periodically OSPF is a link-state algorithm. OSPF specifies a class of messages called link-state advertisements (LSAs) that allow routers to update each other about the LAN and WAN links to which they are connected. When a change is made to the network, LSAs flow between routers. OSPF routers receive link-state updates and store them in a topology database in memory. OSPF networks as an end-station-to-router protocol. OSPF addresses all the deficiencies of RIP, without affecting connectivity to RIP based networks.
Why is the ospf protocol used mainly in lan or limited wan implementations but not the internet?
OSPF is designed to be used within a single autonomous system; basically, this means, a single company. BGP was designed specifically to connect different autonomous systems. Also, in OSPF the routers have to know the topology of the network; this would be impractical with something as big as the Internet.OSPF is designed to be used within a single autonomous system; basically, this means, a single company. BGP was designed specifically to connect different autonomous systems. Also, in OSPF the routers have to know the topology of the network; this would be impractical with something as big as the Internet.OSPF is designed to be used within a single autonomous system; basically, this means, a single company. BGP was designed specifically to connect different autonomous systems. Also, in OSPF the routers have to know the topology of the network; this would be impractical with something as big as the Internet.OSPF is designed to be used within a single autonomous system; basically, this means, a single company. BGP was designed specifically to connect different autonomous systems. Also, in OSPF the routers have to know the topology of the network; this would be impractical with something as big as the Internet.
What information is maintained in the EIGRP topology database for a destination route?
pta ne
What protocols should be used fro a star-bus topology?
1.) Mesh topology:- Routing protocol such as RIP(routing information protocol) or OSPF (open shortest path protocol) is used. 2.) Star topology:- Ethernet, token ring, Local Talk, ATM........... all are used... 3.)Bus topology:- Ethernet protocol using CS-MA/CD as access method.....
What is the first step OSPF and ISIS routers take in building a shortest path first database?
***learn about directly connected networks
What is the first step OSPF and IS-IS routers take in building a shortest path first database?
The first step OSPF and IS-IS routers take in building a shortest path first database is to exchange link-state advertisements (LSAs) or link-state packets (LSPs) with neighboring routers. These packets contain information about the router's directly connected neighbors and the state of their links.
What are the key characteristics of OSPF?
OSPF has the following features:Fast Convergence OSPF can detect and propagate topology changes faster than RIP. Count-to-infinity does not occur with OSPF.Loop-Free Routes OSPF-calculated routes are always loop-free.Scalability With OSPF, an AS can be subdivided into contiguous groups of networks called areas. Routes within areas can be summarized to minimize route table entries. Areas can be configured with a default route summarizing all routes outside the AS or outside the area. As a result, OSPF can scale to large and very large internetworks. In contrast, RIP for IP internetworks cannot be subdivided and no route summarization is done beyond the summarizing for all subnets of a network ID.Subnet Mask Advertised with the Network OSPF was designed to advertise the subnet mask with the network. OSPF supports variable-length subnet masks (VLSM), disjointed subnets, and supernetting.Support for Authentication Information exchanges between OSPF routes can be authenticated.Support for External Routes Routes outside of the OSPF AS are advertised within the AS so that OSPF routers can calculate the least cost route to external networks.
What is the purpose of LSA 's?
The purpose of LSAs (Location Service Advertisements) is to inform nearby routers about a new router being introduced to the network, and to exchange routing information among routers using OSPF (Open Shortest Path First) protocol. LSAs help routers build a consistent and up-to-date view of the network topology.
What is ospf throttle?
OSPF LSA throttling helps the dampening of LSA updates in OSPF during times of network instability.
Can you explain to you the OSPF?
Open Shortest Path First (OSPF) is a type of routing protocol known as an interior gateway protocol or an interior routing protocol. The routers in an internet are responsible for receiving and forwarding packets through the interconnected set of networks. Each router makes routing decisions based on knowledge of the topology and traffic/delay conditions of the internet. The routing protocol between routers is used to exchange topology and traffic delay information. An interior routing protocol is used within a portion of the internet called an autonomous system, which simply means a connected set of routers that are managed by a single organization. OSPF is the most commonly used interior routing protocol.
What type of protocol is OSPF?
OSPF is short form of open shortest path first. OSPF is based on linked state routing.
