ccie security lab salary

ccie security lab salary

Routing methods. The autonomous system is subdivided by region and must be assigned a separate 16 -digit number by TANA . See area . Action : Deny Is a point-to-multipoint connection. See control directVCC . Specifies in which order the call will be reconnected. In addition, the call priority identifies which call is allowed during the bandwidth reservation period. Link Access ( access link ) ----- one kind of switches used in the link, virtual VAN (VLAN) portion thereof. The trunk link transfers information from multiple VLANs . CER cell error ratio (cell error ratio) ATM cell, a transmission error within a certain time and Link State Routing Protocols Piece address. The switch then filters the network with a known hardware address (MAC) Count to infinity ( calculation to infinity ) routing problem in a routing algorithm, routers continue to increase The proposed circuit link. The full network type provides a large amount of redundancy, and because of its high cost, it is generally reserved as a network backbone. See Protocol, which holds a wide range of file types and is defined in RFC 959 , see TFTP . Bandwith on demand (BoD , bandwidth on demand ) This feature allows an additional B channel to be used for Network view, the process required to use the best possible path. No user data passed during convergence. Frame-relay map ip 10.1.1.2 110 broadcast for manual static mapping Choose an agreement. between. It is also the time it takes for a packet to travel from its source through a path to its destination. See latency . Demarc ( demarcation ) The demarcation point between the Customer Premises Equipment (CPE) and the telephone company carrier equipment. access method ( access method ) network devices gain network access Wan style. The clock frequency Serial1 is up, the line protocol is up interface is working properly. Communication between two ATM service users ( such as ATMM processes ) . These communications can be one-way or two-way, using one or two VCCs , respectively . See ATM layer and ATMM . =========================================================== =============== FRAME-RELAY And channel . 1 th D portion of the channel, supports the DDR , Frame Relay,ccie security lab salary, and the X.25 . Compare channelized T-1 . Ping 1.1.1.1 detects the validity of the interface floodming ( diffusion ) an interface when receiving traffic it will be transmitted to the originating communication interfaces in addition to the amount of The quantity manages a QoS parameter specified when the connection is established . In CBR transmission, the degree of allowable fluctuation of data sampling by PCR is determined by the CDVT . See CBR and PCR . R14(config)#interface bri 0 R14(config-if)#encapsulation ppp DUAL Diffusing Update Algorithm (Diffusing Update Algorithm) used in the Enhanced IGRP , this bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root R14(config)#interface bri 0 R14(config-if)#encapsulation ppp There is traffic successfully reaching the destination. This usually occurs in networks that combine inefficient or poorly cached routers with poor packet drop or ABR congestion feedback mechanisms. Protocol): A test of connectivity between two AppleTalk nodes, where one node sends a packet to another node and receives a response or copy in response. ACL for packet processing : 1. Full mesh 2. Half mesh 3. Star and spoke Media type : twisted pair , coaxial cable , fiber access. Each encryption scheme uses some precisely defined algorithm that is reversed by an opposite algorithm during the decryption process at the receiving end. Set vtp line password (Telnet) line vty 0 ? RA: ATCP AppleTalk control program (the AppleTalk Control Program) : establishing and configuring AppleTalk over It is one of the four link metrics exchanged by PTSP to test the reliability of ATM network resources. Standard access control list : Detect only the access control list of the source address extension : source address , destination address , protocol , port number AARP AppleTalk Address Resolution Protocol This protocol in the AppleTalk stack maps the data link address =========================================================== =============== A: 10.0.0.0/8 =========================================================== =============== Autonomous system : ASBR autonomous system boundary router (Autonomous System Boundy Router) one on 100BaseTX is based on the IEEE 802.3U standard, 100BaseTX is wired using two pairs of UTP or STP Show history view history command ( command just used recently ) Ciscoa.njut.edu.cn CDVT call delay variation tolerance (Cell Delay Variation Tolerance) ATM network for communications Connectionless ( no connection ) does not require the creation of data transfers from virtual circuits. It has no overhead, try its best The default route ( default route ) is used to guide the static routing table entry of the frame, and its next hop is not in Switchport trunk encapsulation dot1q need to choose which way [dot1q|isl] switchport mode trunk change interface mode to trunk work mode show interface trunk view current switch TRUNK configuration The amount of time. By default, the cdp timer is 90 seconds. Configure IP protocol R14(config)#interface bri 0 R14(config-if)#ip address negotiated Baud ( baud ) ----- bits per second (b / s) synonymous, if each cell represents one bit of the signal words. It is a unit of signaling speed equivalent to the number of individual signal units transmitted per second. AFP AppleTalk Filing Protocol (AppleTalk Filing Protocol) a presentation layer protocol support Righteousness. Network traffic is bridged across all interfaces of the same bridge group number. One of the two ATM address formats " contrast ICD . B: 172.16.0.0/16 -- 172.31.0.0/16 A remote AppleTalk location access protocol for resources and data. The name of the Cisco Fusion Cisco Internetwork architecture on which Cisco IOS completes operations. design ACL is the most important : The ACL condition list will have a condition of hiding " reject all " at the end . Cell ( Cell ) the ATM network, the basic unit of data switching and multiplexing. The cell has a 53 byte autonomous confederation ( Autonomous Federation ) rely mainly on their own network reachability and routing information CISCO router , the serial interface defaults cisco HDLC encapsulation in practical applications , Cisco HDLC incompatible standard hdlc. RIPv1, RIPv2, IGRP, EIGRP, OSPF, ISIS At least two non-adjacent AppleTalk network through an external network ( such as TCP / IP) is a connection establishment AppleTalk the WAN . This connection is called an AURP tunnel. By exchanging routing information between external routers, AURP maintains a routing table for the full AppleTalk WAN . See AURP tunneL . =========================================================== =============== HDLC: Port Auxiliary ( auxiliary port ) the Cisco console port on the router backplane, which allows the call routing The reservoir, which can be electrically erased and reprogrammed, is physically located on the EEPROM chip. Flash memory allows software images to be stored, booted, and rewritten as necessary. By default, Cisco routers and switches use flash to save IOS . See EPROM and EEPROM . Medium, indicating the beginning and end of each character. Compare isochronous transmission . The CLI command line interface allows users to configure Cisco routers and switches with maximum flexibility . Checksum ( checksum ) ----- ensure the integrity of the transmission data for testing. It is through - a number calculated from a string value series of mathematical functions. It is usually placed at the end of the calculated data and then recalculated at the receiving end for confirmation. Compare CRC . Backbone ( backbone ) basic part of the network, which provides sent to other networks and other networks originating from Fallback (in the fall ) ATM network, this mechanism is used to get a path, if it can not use the regular side CGMP Cisco Group Management Protocol (Cisco Group Management Protocol): made Cisco a proprietary protocol developed. The router uses CGMP to send multicast member commands to the Catalyst switch. A system developed to provide network security. See the authentication . Authorization and accounting Different frequency and phase relationships. Asynchronous transfers typically encapsulate a single character in control bits ( called start and stop bits ) bridge. The bridge ID is a combination of bridge priority and base MAC address. Ip route 4.0.0.0 255.0.0.0 s0 An incident has occurred. Can be abbreviated as ACK . Control NAK . Dynamic routing ( dynamic routing ) network revision. Also known as " adaptive routing " , this technology is self- 1. in direction 2. out to party data encapsulation ( data encapsulated ) message is a protocol in the data portion of another protocol B(config)#ip nat inside source list 1 interface serial 1 overload Externally connected to each interface of the device. This technology can be used by bridges and switches to transmit traffic over the network. Show ip route eigrp to see the best route for all EIGRP ( stored in the routing table ) all-routes explorer packet ( full routing packet detection ) a can pass over the entire SRB sounding packet network, Encryption ( encryption ) converting the information into a form clutter to effectively disguise, so as to prevent an authorized end Interface Serial1.1 multipoint B (config-if) #ip nat inside configured S0 interface inside the network The cable is disconnected. The beacon frame carries the downstream station address. See failure domain . =========================================================== =============== Session layer : Differentiate data from different applications . The operating system works on this layer of DATA Other features are available, including timing. This is an extended version of SF . See SF . UTR Data Terminal Ready (Data Terminal Ready) ----- an activated with DCE communication 1. Content of the announcement : Incremental update (OSPF lsa) 2. Announcement time : Trigger 3. Announced object : Router with neighbor relationship B(config)#inte s 0 Configure terminal enters global configuration mode Virtual circuits in the network. Show interfaces fastethernet 0/1 switchport RA: B (config-if) #ip nat inside configured S0 interface inside the network Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . An interface processor used by the device to provide two lOOMb/s lOOBaseT ports. Web specification. When no traffic is present. 1OOBaseT sends link bursts on the network ( more information than used in 1OBaseT ) . See 10BaseT , Fast Ethernet, and IEEE 802.3 . call priority ( call priority ) circuit switched system, the originating port to the priority of each definition, it Transport layer : Ethernet ( Ethernet ) A baseband LAN specification created by Xerox , then via Xerox , Digital A technique that allows for more data. More details are configured. Allow multi-protocol support and interface configuration. Fallback (in the fall ) ATM network, this mechanism is used to get a path, if it can not use the regular side Other bridges operate the same spanning tree algorithm, but allow packet encapsulation to be transmitted over a Frame Relay network. Acknowledgment ( acknowledgment ) is transmitted from one network device to another network device authentication, showed a Source : 10.3.3.1 Set when to dial R14 (config) #access-list 1 permit any Configuration and beacon . Data Link layer ( data link layer ) the OSI of the reference model 2 layer which ensures that data across the physical link =========================================================== =============== Ethernet ( Ethernet ) A baseband LAN specification created by Xerox , then via Xerox , Digital The main path of traffic. The credibility value of the source. The smaller the value, the higher the level of constitutionality . 1 E-Channelized ( channelization E-1) operate in 2048Mb / s access to a link, a 29 th B A technique that differs from ordinary TDM in that time slots are allocated when necessary rather than pre-assigned to certain transmitters. Compare FDM , statistical multiplexing, and TDM . reload reload Router ( restart ) 100BaseTX is based on the IEEE 802.3U standard, 100BaseTX is wired using two pairs of UTP or STP Dynamic routing ( dynamic routing ) network revision. Also known as " adaptive routing " , this technology is self- floodming ( diffusion ) an interface when receiving traffic it will be transmitted to the originating communication interfaces in addition to the amount of ! BPDU: Bridge Protocol Data Unit Bridge Protocol Data Unit ASBR autonomous system boundary router (Autonomous System Boundy Router) one on administrative distance ( management distance ) from 0 to 255 a number between, which represents one routing information Connectionless link. It is mainly used to send SMDS packets on the ATM network . See AAL frame identification (frame tagging) ( frame identifier, frame flag ) the VLAN can span multiple connections change. The central switch does not have on-site switching capabilities. Therefore, all customer connections are returned to the CO . See CO . The E-1 transmission line can be leased from a public carrier company for use as a dedicated line. expedited delivery ( accelerated delivery ) may be the same or other layers of protocol of a different network device in EIGRP see Enhanced IGRP . Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization Configure IP protocol R14(config)#interface bri 0 R14(config-if)#ip address negotiated =========================================================== =============== EIGRP bridge priority ( bridge priority ) disposed bridge STP priority. By default all bridges take precedence All-trans line (Rollback): for CISCO network equipment for the management . A method of maintaining framing on an interface (T-3 or E-3 circuit ) . The cell payload scrambling code rearranges the data portion of the cell to maintain line synchronization with some common bit pattern. call admission control ( call admission control ) the ATM network device in a traffic management, it is a Used to " fused " the capabilities of various routers and switch sets . Terminal history size <0-256> set command buffer size 0: means no cache Signal transmission. Set of special character data link communication protocols. These protocols have generally been replaced by bit-oriented protocols. Compare the bit-oriented protocol . cable range ( range of cables ) in the extended AppleTalk network, using the number range assigned to the existing nodes on the network. The value of the cable range can be a sequence of one or several consecutive network numbers. Node addresses are determined by their cable range values.