ppt - Courses
... Converting Domain Names • Domain names are for humans to read. • The Internet actually uses numbers called IP addresses to describe network addresses. • The Domain Name System (DNS) – resolves IP addresses into easily recognizable names • For example: – 12.42.192.73 = www.xyz.com ...
... Converting Domain Names • Domain names are for humans to read. • The Internet actually uses numbers called IP addresses to describe network addresses. • The Domain Name System (DNS) – resolves IP addresses into easily recognizable names • For example: – 12.42.192.73 = www.xyz.com ...
Chapter 16 - Communications
... – data being transmitted may be divided into packets. – each packet has the name of the sender and the destination added to it. – the multiplexer sends these packets seperately. – The multiplxer may be transmitting several messages simultaneously and can mix up the different packets. – the demultipl ...
... – data being transmitted may be divided into packets. – each packet has the name of the sender and the destination added to it. – the multiplexer sends these packets seperately. – The multiplxer may be transmitting several messages simultaneously and can mix up the different packets. – the demultipl ...
BCS THE CHARTERED INSTITUTE FOR IT COMPUTER NETWORKS BCS HIGHER EDUCATION QUALIFICATIONS
... Figure 1 shows a small scale network comprising one switch and one router. A personal computer is connected to the switch and a server is connected to the router. All switch and router ports are IEEE 802.3 CSMA/CD. For this network, consider data being sent from the personal computer to the server a ...
... Figure 1 shows a small scale network comprising one switch and one router. A personal computer is connected to the switch and a server is connected to the router. All switch and router ports are IEEE 802.3 CSMA/CD. For this network, consider data being sent from the personal computer to the server a ...
Lecture 20: Transport layer
... – Implication: The problems to be addressed in the transport layer are very similar to those in the data link layer. However, the solutions may be more complex. ...
... – Implication: The problems to be addressed in the transport layer are very similar to those in the data link layer. However, the solutions may be more complex. ...
COS 217, Spring 2005 - Princeton University
... –Ease of adding hosts and link technologies –Ease of adding services (Web, P2P, VoIP, …) ...
... –Ease of adding hosts and link technologies –Ease of adding services (Web, P2P, VoIP, …) ...
![Internetting - start [kondor.etf.rs]](http://s1.studyres.com/store/data/008748963_1-a9069059252fd71305a9df1cb24ebaac-300x300.png)
Internetting - start [kondor.etf.rs]
... Each host on a TCP/IP internet is assigned a unique 32-bit address that is used in all communication with that host Must not be confused with physical addresses! Each address is a pair (netid, hostid), where netid identifies a network, and hostid identifies a host on that network In practice, each I ...
... Each host on a TCP/IP internet is assigned a unique 32-bit address that is used in all communication with that host Must not be confused with physical addresses! Each address is a pair (netid, hostid), where netid identifies a network, and hostid identifies a host on that network In practice, each I ...
CERT Exercises Toolset
... Sometimes information about an incident, particularly a wide-spread incident, is received in bulk – containing not just data about your networks but from all networks. This can be the case when a site under a DDoS attack shares its logs without time to sort and separate them for individual ISPs, loo ...
... Sometimes information about an incident, particularly a wide-spread incident, is received in bulk – containing not just data about your networks but from all networks. This can be the case when a site under a DDoS attack shares its logs without time to sort and separate them for individual ISPs, loo ...
A CASE STUDY OF
... customer expectations and overcoming geographical challenges. To maintain customer expectations, Norkring was required to offer multi-service transport capabilities to its various customer segments, made up of the national television networks NRK, TV2, TV Norge and local TV stations. Additionally, t ...
... customer expectations and overcoming geographical challenges. To maintain customer expectations, Norkring was required to offer multi-service transport capabilities to its various customer segments, made up of the national television networks NRK, TV2, TV Norge and local TV stations. Additionally, t ...
PowerPoint
... • mcast forwarding tree: tree of shortest path routes from source to all receivers – Dijkstra’s algorithm ...
... • mcast forwarding tree: tree of shortest path routes from source to all receivers – Dijkstra’s algorithm ...
Lesson 9 - EdTechnology, educational technology
... decentralized and robust network that is the Internet. Many protocols used today were designed using the four-layer TCP/IP model. It is useful to know both the TCP/IP and OSI networking models. Each model offers its own structure for explaining how a network works but there is much overlap between t ...
... decentralized and robust network that is the Internet. Many protocols used today were designed using the four-layer TCP/IP model. It is useful to know both the TCP/IP and OSI networking models. Each model offers its own structure for explaining how a network works but there is much overlap between t ...
Chapter 2: Attackers and Their Attacks
... These IP addresses are not assigned to any specific user or organization; anyone can use them on their own private internal network Port address translation (PAT) is a variation of NAT Each packet is given the same IP address, but a different TCP port ...
... These IP addresses are not assigned to any specific user or organization; anyone can use them on their own private internal network Port address translation (PAT) is a variation of NAT Each packet is given the same IP address, but a different TCP port ...
CSE 123: Computer Networks Fall Quarter, 2014 MIDTERM EXAM Name
... d) (5 pts) What is the maximum effective capacity of a channel with bandwidth 10 Hz and a signalto-noise ratio of 15:1? Shannon’s formula says C = 2B log(1 + SN R). Plugging 15 in for SN R gives 40 bps. e) (5 pts) Suppose a 1500-byte IP packet is forwarded across a link with a 500-byte MTU. How many ...
... d) (5 pts) What is the maximum effective capacity of a channel with bandwidth 10 Hz and a signalto-noise ratio of 15:1? Shannon’s formula says C = 2B log(1 + SN R). Plugging 15 in for SN R gives 40 bps. e) (5 pts) Suppose a 1500-byte IP packet is forwarded across a link with a 500-byte MTU. How many ...
Lambda Station
... Duplicating site infrastructure to connect them to specialpurpose networks is an expense to be avoided if possible. • Multihoming the endpoints to multiple networks is complicated and expensive and it (nearly) precludes graceful failover when one path is lost. • Applications (and operating systems) ...
... Duplicating site infrastructure to connect them to specialpurpose networks is an expense to be avoided if possible. • Multihoming the endpoints to multiple networks is complicated and expensive and it (nearly) precludes graceful failover when one path is lost. • Applications (and operating systems) ...
Here is the Power Point Presentation on Chord
... As we went over in class, Napster relied on a central server to store all routing information, so it was only sort of peer-to-peer ...
... As we went over in class, Napster relied on a central server to store all routing information, so it was only sort of peer-to-peer ...
PPT
... Hosts communicate through message passing. Computer don’t really trust each other. Some resources are shared, but most are not. The system may look differently from different hosts. • Typically, communication times are long. ...
... Hosts communicate through message passing. Computer don’t really trust each other. Some resources are shared, but most are not. The system may look differently from different hosts. • Typically, communication times are long. ...
vocab-network-poch-11
... STAR TOPOLOGY A star topology is a topology for a Local Area Network (LAN) in which all nodes are individually connected to a central connection point, like a hub or a switch. ...
... STAR TOPOLOGY A star topology is a topology for a Local Area Network (LAN) in which all nodes are individually connected to a central connection point, like a hub or a switch. ...
Port Authority-SAM22.pmd - Communication Devices, Inc.
... Access to console ports on Routers, Firewalls, Network Appliances, etc., cannot be protected by network security when out of band access is required. Secure Out of Band Management and Network security are mutually exclusive events. The Solution The SAM-22 connects directly to console ports and provi ...
... Access to console ports on Routers, Firewalls, Network Appliances, etc., cannot be protected by network security when out of band access is required. Secure Out of Band Management and Network security are mutually exclusive events. The Solution The SAM-22 connects directly to console ports and provi ...
******* 1 - DistributedSys
... tables to all destinations. Instead, they simply route messages addressed to unknown destinations to another server that is likely to have the relevant tables. ...
... tables to all destinations. Instead, they simply route messages addressed to unknown destinations to another server that is likely to have the relevant tables. ...
3rd Edition: Chapter 4
... - also known as a repeater, is a network device that can operate on layer-1 (I.e. the physical layer) to connect network devices for communication - commonly used to connect segments of a LAN - typically the least expensive, least intelligent, and least complicated - acts on individual bits rather t ...
... - also known as a repeater, is a network device that can operate on layer-1 (I.e. the physical layer) to connect network devices for communication - commonly used to connect segments of a LAN - typically the least expensive, least intelligent, and least complicated - acts on individual bits rather t ...
Layered Architecture of Communication Networks (2)
... decide how to deal with these situations Used by applications that require quick delivery and has some tolerance to information loss ...
... decide how to deal with these situations Used by applications that require quick delivery and has some tolerance to information loss ...
Computer Communications Network Design
... Central Server The general purpose DHCP, Web, Email, and File server that is specified in this design is typical of most small / medium business networks. For very small businesses, which may not want to invest in a special server just for these tasks, a router which includes DHCP functionality can ...
... Central Server The general purpose DHCP, Web, Email, and File server that is specified in this design is typical of most small / medium business networks. For very small businesses, which may not want to invest in a special server just for these tasks, a router which includes DHCP functionality can ...
NETWORK DEVICES.doc
... This is a communications device that connects multiple computers or other routers together and transmits data to its correct destination on a network. A router can be used on any size network. On the largest scale, routers along the internet backbone forward data packets to their destination using t ...
... This is a communications device that connects multiple computers or other routers together and transmits data to its correct destination on a network. A router can be used on any size network. On the largest scale, routers along the internet backbone forward data packets to their destination using t ...