hdlc

Example:802,3,802,2DefinitionEthernet1eee802, 3/802, 2 How to work,HDLC → point-to-pointFddl, ATM Wan LinkNic, bridge, and switch PhysicalPhysical Characteristics of physical media E 1a /T 1a ,232 Commector, pin, electrical currentE 1a /T 1a -449 Eneoding.Example:RJ45DefinitionWires/pinsV.35, V.24 EthernetAnd802.3DefinitionWires/RJ45, Ethernet Pins1, 2, 3, 6802.3, 802.5 FDDI 4.

technologies is used in Ethernet? CA. fddi B. ATMC. CSMA/CD11. What layer does the HDLC protocol work on in the OSI model? CA. Transport Layer B. Network LayerC. Data Link Layer12. Which of the following commands is used to save the current configuration of the vro to the TFTP server? CA. Router # copy startup-config tftp B. Router # copy flash TFTPC. Router # copy running-config TFTP13. Which of the following statements about Mac is wrong _______. A

technique for relaying PPP frame information in an Ethernet network, especially for ADSL applications. Introduction to PPP protocol----------------------------ppp:point-to-point Protocol, Link layer protocol. The user realizes point-to-point communication. The PPP protocol provides a set of solutions to solve the problems of link establishment, maintenance, demolition, upper layer protocol negotiation and authentication. This includes several parts: the Link Control Protocol LCP (link controls

. The data part is very important to the speech compression platform, so the network signaling can be exchanged between nodes. At the same time the low speed rate HDLC data is also supported. The private network signaling is in fact also the HDLC data, which includes not only the call processing signal, but also the communication management, routing, monitoring and other information. The advanced speech com

is automatically reduced when the server load dropsWorker features: Multi-Threading multi-process module supporting mixed multithreadingIf the worker mpm is a good choice for a high-traffic HTTP server, the worker mpm consumes less memory than prefork. 15. Noun explanation hdlc,vtp,ospf,rip,ddos,system v,gnu,netscreen,ssh,smartd,apache,wait_time and so on.16. Write the shell script to get the network address of this machine. For example: The IP

using a Web browser, and the Web server sends the requested information to the client.The following diagram attempts to show the location of the different TCP/IP and other protocols in the original OSI model: 7 Application Layer such as HTTP, SMTP, SNMP, FTP, Telnet, SIP, SSH, NFS, RTSP, XMPP, Whois, ENRP 6 Presentation Layer such as XDR, ASN.1, SMB, AFP, NCP 5 Session Layer For example ASAP, TLS, SSH, ISO 8327/ccitt x.

Original address: http://blog.51cto.com/13683137989/1880744 Introduction of the preface: The IP address is divided into public IP addresses and private IP addresses, which are owned by Inic (Internet Network Information Center), which are assigned to the organization that registers and applies to inic. Private address is not registered, but is used exclusively within the organization. Private addresses are not directly used to communicate with WANs, either by using frames to communicate (Fre Fr

compared to RTSP, while RTSP transmits multimedia data. HTTP requests are sent by the client, the server responds, and when the RTSP is used, both the client and the server can make requests, that is, the RTSP can be two-way. The Point-to-Point Protocol (English: point-to-point PROTOCOL,PPP) works at the Data Link layer (in the view of the OSI Reference Model). It is typically used to create a direct connection between two nodes. It is mainly used to connect two computers using serial lines, an

address addressing, data framing, flow control, data error checking, re-sending, etc. In this layer, the units of the data are called frames. The Data Link layer protocol includes: SDLC, HDLC, PPP, STP, Frame Relay, and so on. The third layer is the network layerThere may be many data links between the two computers that communicate in the computer network, or they may go through many communication subnets. The task of the network layer is to selec

on. RLC Wireless Link Control: RLC to the Upper-level LLC Data Segmentation and reorganization for transmission on the logical channel, RLC through selective retransmission, to the upper layer to provide a reliable link, which according to the Wireless Link transmission capacity of 1527 bytes (the maximum length of the LLC frame) by CS (coding Scheme) to cut into different small blocks for convolution, interleaving, and other channel coding. LLC Logical Link Control: LLC is an agreement betwe

layer test message or use the Service Layer path trail byte method, all need to find the physical media layer adjacency and the adjacent node address on the basis of the discovery of the adjacent relationships on each layer. Figure 3 shows the test method used to discover the address information of the neighboring nodes. Two Intelligent Optical network nodes A and z, connected by a fiber, for the sake of simplification, did not draw the relevant components of the control plane, nor consider the

polynomial denoted type * Application examples CRC-4 X4+x+1 　 ITU g.704 CRC-12 X12+x11+x3+x+1 　 　 CRC-16 X16+x12+x2+1 1005 IBM SDLC crc-itu** X16+x12+x5+1 1021 ISO HDLC, ITU X.25, v.34/v.41/v.42, Ppp-fcs CRC-32 X32+x26+x23+...+x2+x+1 04c11db7 ZIP, RAR, IEEE Lan/fddi, IEEE 1394, Ppp-fcs crc-32c X32+x28+x27+...

Tags: POJ RMI computer program TCP/IP protocol for network efficiency NAL BBS First layer: Physical layer second layer: Data link layer 802.2, 802.3ATM, HDLC, FRAME RELAY Third layer: Network layer IP, IPX, ARP, APPLETALK,ICMP layer Fourth: Transport layer TCP, UDP, SPX RPC,SQL, NFS, X WINDOWS,ASP layer Sixth: Presentation layer ASCLL, PICT, TIFF,JPEG MIDI, MPEG layer Seventh: Application layer HTTP,FTP, SNMP, etc. https://www.nowcoder.com/questio

uses a subset of the HDLC specification. The LLC defines three types of data communication operations:Type 1: no connection. This method of sending information is usually not guaranteed to be received.Type 2: Connection oriented. This approach provides four services: connection establishment, acknowledgment and acknowledgment response, error recovery (via request for re-sending of received erroneous data), and sliding window (factor: 128). The data t

port and Ethernet port an IP address and the corresponding Address Mask. Secondly, we need to set the link transmission encapsulation protocol for bandwidth and data at the wide area network port (HDLC and PPP protocols are used in the experiment respectively ). Finally, you need to configure the routing protocol. In a large network, there are many different protocols (Static Routing, dynamic OSPF, and VPN) available ). However, we chose CISCO's prop

, the use of V.35 interface router needs to install a E1-V.35 converter, this will occur due to the reasons of the converter caused by various problems. In comparison: The size of the NIR-E1 router is only 1/3 of the size of the mainstream manufacturers;No complex functions;Supports LAN protocol;Supports Wan PPP and HDLC protocols;Supports network protocols: IP service ARP static domain name resolution) and IP routing. You can use the CTRL port for lo

network connected by the router, OSPF divides the network into four types: Broadcast Multi-Channel Access Broadcast multiAccess), non-Broadcast Multi-Channel Access None Broadcast MultiAccess, NBMA) point-to-Point, Point-to-Point, and Point-to-MultiPoint ).Broadcast Multi-Channel Access networks such as Ethernet, Token Ring, and FDDI. NBMA networks such as Frame Relay, X.25, and SMDS. Point-to-Point networks such as PPP and HDLC.4. assign a vrodr DR)

Wizard, you can not only assign IP addresses and subnet masks to Ethernet interfaces, but also enable or disable DHCP servers. The WAN Configuration Wizard allows you to configure xDSL, T1/E1, Ethernet, and ISDN interfaces for WAN and Internet access. In addition, for serial connections, you can also implement frame relay, PPP, and advanced Data Link Control HDLC encapsulation. In addition, Cisco SDM allows you to configure static routes and common d

protocols, such as OSPF and RIP, should be used for interconnection between Cisco and Huawei routers. Cisco private protocols, such as VPN, are not required ), this article provides a configuration example for Cisco router configuration and Huawei router OSPF serial port connection for analysis. 2. Interconnection Iii. configuration file description Currentconfiguration: ! Version12.1 Servicetimestampsdebuguptime Servicetimestampsloguptime Servicepassword-encryption ! Hostn

standards E1: 64k-2mbps. X25: The maximum speed is 64 kbps. Frame relay: The e1 circuit is used, and the speed can be 64 K to 2 mbps. V24: the router end is a db50 connector, and the external network end is a 25-pin connector. In asynchronous mode, the link layer protocol ppp is encapsulated and Network Layer Protocol ip address and ipx are supported. The maximum transmission rate is 115200bps; In synchronous mode, link layer protocols such as x.25, frame relay, ppp,