Chapter 1 Data Communications and Networks Overview
... devices, and rules by which bits are passed from one to another. Has the following characteristics: —Mechanical: physical properties like: pluggable connectors and cables (called circuits) —Electrical: bits representation (e.g. voltage levels) and transmission rate. —Functional: specifies the functi ...
... devices, and rules by which bits are passed from one to another. Has the following characteristics: —Mechanical: physical properties like: pluggable connectors and cables (called circuits) —Electrical: bits representation (e.g. voltage levels) and transmission rate. —Functional: specifies the functi ...
งานนำเสนอ PowerPoint
... design of network systems that allows for communication across all types of computer systems • It consists of seven separate but related layers • An ISO standard ISO is the organization. OSI is the model. ...
... design of network systems that allows for communication across all types of computer systems • It consists of seven separate but related layers • An ISO standard ISO is the organization. OSI is the model. ...
Transport Protocols
... – Each segment has source and destination port number • Host uses IP addresses and port numbers to direct the segment to appropriate socket ...
... – Each segment has source and destination port number • Host uses IP addresses and port numbers to direct the segment to appropriate socket ...
Judul
... • The OSI and TCP/IP models have layers that explain how data is communicated from one computer to another. • The models differ in the number and function of the layers. • However, each model can be used to help describe and provide details about the flow of information from a source to a destinatio ...
... • The OSI and TCP/IP models have layers that explain how data is communicated from one computer to another. • The models differ in the number and function of the layers. • However, each model can be used to help describe and provide details about the flow of information from a source to a destinatio ...
Chapter 1 Introduction 1.1
... connected by communication links. A node can be a computer, printer, or any other device capable of sending and/or receiving data generated by other nodes on the network. Topics discussed in this section: ...
... connected by communication links. A node can be a computer, printer, or any other device capable of sending and/or receiving data generated by other nodes on the network. Topics discussed in this section: ...
Powerpoint - Chapter 1
... Broadband networks carry multiple signals at once, while baseband networks carry only one signal. A backbone network connects segments together, forming an internetwork. Most operating systems today use the peer-to-peer model, which allows computers to function as both clients and servers. ...
... Broadband networks carry multiple signals at once, while baseband networks carry only one signal. A backbone network connects segments together, forming an internetwork. Most operating systems today use the peer-to-peer model, which allows computers to function as both clients and servers. ...
SLIP&PPP - W3Professors
... FLAG:-The PPP frame always begins & Ends with the standard HDLC Flag ...
... FLAG:-The PPP frame always begins & Ends with the standard HDLC Flag ...
Pres 2 Internet Addressing and Layers
... • The Network Layer deals with packets. • Responsible for transmitting data packets between source and destination nodes that may not be connected by the same physical link • Message may pass through an "intermediate node." Network Layer's job is to use intermediate nodes to transmit a packet to its ...
... • The Network Layer deals with packets. • Responsible for transmitting data packets between source and destination nodes that may not be connected by the same physical link • Message may pass through an "intermediate node." Network Layer's job is to use intermediate nodes to transmit a packet to its ...
Chapter 2 Protocols and Architecture
... Physical Layer • Physical interface between data transmission device (e.g. computer) and transmission medium or network • Characteristics of transmission medium • Signal levels • Data rates • etc. ...
... Physical Layer • Physical interface between data transmission device (e.g. computer) and transmission medium or network • Characteristics of transmission medium • Signal levels • Data rates • etc. ...
MCQ Model Questions
... 19) The fastest 1/0 of RAID (Redundant Arrays of Inexpensive Disks) is -A) Level – 0 B) Level – 1 C) Level – 3 D) Level – 4 20) RSA is – A) B) C) D) ...
... 19) The fastest 1/0 of RAID (Redundant Arrays of Inexpensive Disks) is -A) Level – 0 B) Level – 1 C) Level – 3 D) Level – 4 20) RSA is – A) B) C) D) ...
TCP/IP
... – TCP is a reliable protocol (guarantees delivery of packets from source to destination) – TCP provides error-checking (using a checksum) – TCP is connection-oriented (provides session establishment and teardown handshaking protocols to create dedicated process-to-process communication) ...
... – TCP is a reliable protocol (guarantees delivery of packets from source to destination) – TCP provides error-checking (using a checksum) – TCP is connection-oriented (provides session establishment and teardown handshaking protocols to create dedicated process-to-process communication) ...
Link Layer
... If packets are too small, the collision goes unnoticed Limit packet size Limit network diameter Use CRC to check frame integrity truncated packets are filtered out ...
... If packets are too small, the collision goes unnoticed Limit packet size Limit network diameter Use CRC to check frame integrity truncated packets are filtered out ...
Midterm Test - 18Jul08 - Solutions
... 35. With respect to data transfer speeds of wireless NICs, the most common choices today are 11 Mbps or ____ Mbps. a. 22 c. 54 b. 50 d. 100 36. Wireless NICs can operate at speeds faster than 100 Mbps by using the ____ technology. a. IEEE 802.11a c. IEEE 802.11i b. IEEE 802.11g d. IEEE 802.11n 37. I ...
... 35. With respect to data transfer speeds of wireless NICs, the most common choices today are 11 Mbps or ____ Mbps. a. 22 c. 54 b. 50 d. 100 36. Wireless NICs can operate at speeds faster than 100 Mbps by using the ____ technology. a. IEEE 802.11a c. IEEE 802.11i b. IEEE 802.11g d. IEEE 802.11n 37. I ...
High-Level Data Link Control
... – If flag pattern appears in data stream, a special escape byte (ESC) is added before it, and if ESC appears inside data, it also needs byte stuffing – Address: 11111111, which means all stations can accept the frame → This avoids issue of assigning data link addresses – Control: 00000011 is a defau ...
... – If flag pattern appears in data stream, a special escape byte (ESC) is added before it, and if ESC appears inside data, it also needs byte stuffing – Address: 11111111, which means all stations can accept the frame → This avoids issue of assigning data link addresses – Control: 00000011 is a defau ...
Data Transmission
... Number of bits that can be sent in 1 second. Units of Baud I bit per second = 1 Baud ...
... Number of bits that can be sent in 1 second. Units of Baud I bit per second = 1 Baud ...
Reference model
... delivering data between two nodes which are connected by the same physical link. ...
... delivering data between two nodes which are connected by the same physical link. ...
Slide 1
... which cannot be guaranteed with conventional technology as used by PON. – The purpose of SDN is to provide data exchange between multiple Plant Systems and CODAC systems for plasma feedback control with a performance cycle time on less than 1 ms. ...
... which cannot be guaranteed with conventional technology as used by PON. – The purpose of SDN is to provide data exchange between multiple Plant Systems and CODAC systems for plasma feedback control with a performance cycle time on less than 1 ms. ...
Industrial communications first test
... Error correction: FEC (e.g. hamming): extra bits to detect & correct – large overhead, cannot recover from huge errors, used in simplex transm., & where transm. times are long. BEC – only to detect, simple, effective, least expensive. ...
... Error correction: FEC (e.g. hamming): extra bits to detect & correct – large overhead, cannot recover from huge errors, used in simplex transm., & where transm. times are long. BEC – only to detect, simple, effective, least expensive. ...
William Stallings Data and Computer Communications
... Device attached to one of the networks of an internet Supports end-user applications or services ...
... Device attached to one of the networks of an internet Supports end-user applications or services ...
Lec6
... Link Layer : includes device driver and network interface card Network Layer : handles the movement of packets, i.e. Routing Transport Layer : provides a reliable flow of data between two hosts Application Layer : handles the details of the particular application ...
... Link Layer : includes device driver and network interface card Network Layer : handles the movement of packets, i.e. Routing Transport Layer : provides a reliable flow of data between two hosts Application Layer : handles the details of the particular application ...
Lec_1
... 3. Timeliness. The system must deliver data in a timely manner. Data delivered late are useless. In the case of video and audio, timely delivery means delivering data as they are produced, in the same order that they are produced, and without significant delay. This kind of delivery is called real- ...
... 3. Timeliness. The system must deliver data in a timely manner. Data delivered late are useless. In the case of video and audio, timely delivery means delivering data as they are produced, in the same order that they are produced, and without significant delay. This kind of delivery is called real- ...