ccie security mock lab

ccie security mock lab

And track . 1 th D channels ( each 64Kb / s) a part in which a single channel or channel group are connected to different destinations, supports the DDR , Frame Relay, and the X.25 . Compare channelized E-1 . B(config)#inte s 0 =========================================================== ================== 1. Use hop count as a metric 2. Support up to 6 paths for the average load (default set to 4) 3. Periodic notification time : 30s Disable returns from privileged mode to user mode Code IP over ATN equipment. Or hub port duplex. show flash: view flash in the IOS file ATCP AppleTalk control program (the AppleTalk Control Program) : establishing and configuring AppleTalk over CD carrier detection (cairierdetect) indicates that an interface has been activated or a modem-generated connection The process of outputting a single stream. See multiplexing . 1. Reduce the size of the routing table 2. Speed ​​up the convergence 3. Limit the spread of LSA 4. Improve stability failure domain ( fault domain ) ----- area of the failed token ring. When a station gets a serious fault ( such as a cable disconnection on the network ) , it sends a beacon frame that includes the fault reported by the station, its NAUN, and everything in between. This defines the fault domain. The beacon then begins the so-called automatic configuration process. See autore Change information, a spanning tree protocol that sends initialization packets at definable intervals. CSMA / CD carrier with Collision Detection Sense Multiple Access (Carrier Sense Multiple Access / Collision Detect ) Ethernet IEEE802.3 a technology committee defined. Every device is sending Media type : twisted pair , coaxial cable , fiber Transport layer : reliable and unreliable transport services , retransmission mechanism . Segment Signal transmission. dial backup ( Dial Backup ) dial-up connection is typically used to provide redundancy backup frame relay connection. Backup chain CRC cyclic redundancy check : A method of detecting errors in which a frame receiver uses a binary divider to divide the frame content for a calculation and store the remainder with the transmitting node in the frame. Value comparison. Compare checksum . Clock rate ? Configure the clock frequency of the DCE interface ( system specified frequency ) Protocol, which holds a wide range of file types and is defined in RFC 959 , see TFTP . Virtual circuits in the network. If the neighbor and passive-interface are configured at the same time , then the neighbor will not be restricted by the passive-interface . explorer frame ( detection frame ) and the source-route bridging found to serve to bridge before a remote transmission DLCI: identifies the PVC 's . Only valid locally . Link State Routing Protocols Startup -config will be actively loaded every time the router or switch is started . =========================================================== =============== =========================================================== =============== BECN: Backward explicit congestion notification The other party does not have no shutdown to activate the port. Flexibility : VLANs can span multiple switches AAL5 ATM Adaptation Layer 5 One of the four AALs recommended by ITU-T , mainly used to support inter-face connection Adopt standard : 10OMb/S baseband Fast Ethernet specification. The first pair of lines receives data ; the second pair of lines sends data. To ensure proper signal timing, a 100BaseTX segment cannot exceed 100 meters. dynamic entries ( dynamic entries ) for the first 2 layer and 3 to create a hardware device address dynamically layer IGRP uses a 24-bit metric . CHAP: Challenge three-way handshake , the password is transmitted by HASH algorithm , which is stronger than PAP. distance-vector routing algorithm ( Distance Vector Routing Algorithm ) In order to find the shortest path, Aggregation layer : the convergence layer of the access point , can provide routing decisions . Realize the safety filter , the flow control . Remote access . The main device : router . Using private IP addresses host , you can not directly access the public network (Internet) private IP public network router will not appear in the routing table . Ciscoa.njut.edu.cn CIDR stepless routing domain (Classless Interdomain Routing) stepless routing protocol =========================================================== ============== edge. When any member of the peer group wants to find a resource, it sends a probe to the border peer. The border peer then forwards the request on behalf of the requesting router, thus eliminating duplicate traffic. 8 bits are used to define the network, and 24 bits are used to define hosts on the network. NET / ADAPTIVE company in I991 co-founded the international organization, the organization for the development and promotion of the ATM standards-based technology implementation of the agreement. The ATM Forum relaxed the official standards developed by ANSI and ITU.T and created implementation agreements before the official standards were released. routing Classless ( stepless routing ) transmits routing update routing subnet mask. Stepless road FRAS FR access support (Frame Relay Access Support) ----- Cisco IOS a characteristic of the software, which allows the SDLC , Ethernet, Token Ring and Frame Relay connections IBM upper frame relay network equipment can Other Session layer : Differentiate data from different applications . The operating system works on this layer of DATA FQDN Fully Qualified Domain Name (fully qualified domain name) in the DNS for the domain structure due to =========================================================== =============== routing Classless ( stepless routing ) transmits routing update routing subnet mask. Stepless road BECN between the Explicit Congestion through-pipe (Backward Explicit Congestion Notification) BECN is The station's HDLC communication mode, where the transmission can start from the primary station or a secondary station. cell payload scrambling ( cell payload scrambling ) the ATM switches and certain of the edges speed relay Redundant topology , causing " broadcast storm ", " multiple frame reception ", "MAC address table instability ". Configure ACL to reject london to access Denver Boot ROM ( Boot ROM) for the router in order to release the boot mode router. Then guide Add the port to the specified VLAN fragmentation ( segmentation ) when transmitting data on an intermediate medium can not support large network packet size, so A data link product from EtherTalk Apple Computer Inc. that allows AppleTalk networks to be powered by Ethernet Ip address 1.1.1.1 255.0.0.0 Configure the IP address of the interface RA: The default route ( default route ) is used to guide the static routing table entry of the frame, and its next hop is not in An OSI language and description method for data types . It is described by ISO International Standard 8824 . Clear line XXX clear line The reduced mode IP multicast scheme uses TGMP to transport routing datagrams between its neighbors. See IGMP . CO central office (central office) , all circuits in a certain area are connected here, is the subscriber line 10OMb/S baseband Fast Ethernet specification. The first pair of lines receives data ; the second pair of lines sends data. To ensure proper signal timing, a 100BaseTX segment cannot exceed 100 meters. end-to-end VLANs ( end the VLAN) ----- across the switch fabric (switch-fabric) from end to end ABM Asynchronous Balance Mode ---- ABM is an HDLC ( or a protocol derived from it ) communication technology that supports peer-to-peer, point-to-point communication between two stations when two stations can start transmitting. (DCE) , consisting of a modem. See DCE . Frame-relay route 120 interface Serial0 110 BISDN broadband TSDN (Broadband ISDN) ----- to manage high-bandwidth technologies ( such as video ) created bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root DSR modem is ready (Data Set Ready) ----- When the DCE energized and ready to run, this PPP authentication method : Propagation through hubs and repeaters, but not through LAN switches, routers, or bridges. See collision . COmposite metric ( complex metrics ) with IGRP and EIGRP use with such routing protocol, Using PPP encapsulation and support on the wire, it is a security feature that identifies the remote end and helps prevent unauthorized users. After the CHAP is executed, the router or the pick-up server determines whether a given user is allowed to access. It is a new, more secure protocol than PAP . Compare PAP . 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 . Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization Class A network (A Class network ) portion of the Internet Protocol hierarchical addressing scheme. Class A network only Interface s 1.??? point-to-point enables a peer -to- peer subinterface . ??? is the interface number . ip add 10.1.1.1 255.255.255.0 configures the ip for the subinterface 0x2142 bypasses the process of loading startup-config , or : does not load the boot configuration , directly enter the setup mode 0x2102 router default configuration key value , perform the normal boot sequence . analog transmission ( analog transmission ) represented by different combinations of the information signal amplitude, frequency and phase Flapping ( flip ) describe a term serial interface to be opened and closed. It uses two pairs of twisted-pair cable (3 class 4 class or 5 classes ) , one pair for transmitting data to the other for receiving data. Show ip ospf neighbor to view neighbors (NeighborID is RouterID) Encapsulation ( encapsulation ) layered association, the technology used, one layer to the upper layer protocol data unit Extended Setup ( extended set ) used in the setting mode to configure the router, it is more than the basic setting mode Let " . In this scheme, each T-1 uses one bit of each sixth frame on the channel to transmit monitoring signaling information. 10.1.1.0/255.255.255.0 Data is transmitted over a given physical link and is equivalent to the data link layer of the OSI reference model. Layer and Transport layer . R14(config)#isdn switch-type basic-net3 Debug ip eigrp notifications debug event notification IGRP: based on bandwidth, latency, reliability, load, MTU (maximum transmission unit) Ppp chap hostname abc sends local username in CHAP mode Access-list 100 deny ICMP host 10.3.3.1 host 172.16.3.1 VLAN . The frame flag does this. The switch can then command the frame to the appropriate port. GNS the nearest server (Get Nearest Server): in the IPX network, to determine a customer a request of a given type of packet location nearest transmitted activation server. An IPX network client issues a GNS request to obtain a response from a connected server or a response from a router that discloses the location of the server on the internet. GNS is part of IPX and SAP . See IPX and SAP . Frame-relay map ip 10.1.1.2 110 broadcast for manual static mapping switchport mode trunk change the interface mode to trunk mode of operation in 3550 to create an 802.1Q trunk road 1. Add this interface to the rip process. 2. Advertise the network of this interface to other routers. The over rate is the maximum rate minus the insurance rate. Depending on the availability of network resources, excess traffic can be dropped during congestion. Contrast maximumraten 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 . Externally connected to each interface of the device. This technology can be used by bridges and switches to transmit traffic over the network. Copy tftp: running-config copy startup-config tftp: 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. Servers, workstations, ATM- to- LAN switches, and ATM routers. show ip eigrp topology view EIGRP topology database ( table ) Aggregation layer : the convergence layer of the access point , can provide routing decisions . Realize the safety filter , the flow control . Remote access . The main device : router . 0x0 indicates that the router is going to enter the Rom monitor mode. CDP Cisco Discovery Protocol (Cisco Discovery Protocol) Cisco proprietary protocol, used to tell the neighbor Show cdp interface serial 1 View the CDP information of the interface. cut-through frame switching ( straight-frame exchange ) A frame of data flowing through the switch switching technology compression ( compression ) with a string of numerals repeated data, transmitted over a link than normal =========================================================== =============== AFP AppleTalk Filing Protocol (AppleTalk Filing Protocol) a presentation layer protocol support An example. Also known as " narrowband " . For broadband . Busy, a frame can be discarded. DE is a field in the frame that is opened by the sending router if the committed information rate (CIR) is over-provisioned or set to zero . Vtp server configures this switch to enable pruning for server mode [server|client |transparent] vtp pruning Handshake ( handshake ) to ensure synchronous transmission of a series of operations exchanged between two or more devices on a network. Interface fastethernet 0/1 enters Fast Ethernet 0/1 interface 1Gbps 4 Username 123 password cisco configuration user name password database , used to verify each other group. Because they do not forward broadcast frames, the broadcast domain is usually surrounded by routers. Access server ( access server ) is the so-called " network access server " , it is a communication process, through the network Access server ( access server ) is the so-called " network access server " , it is a communication process, through the network mask address ( address mask ) a bit pattern descriptor, which identifies which portion of a network address of the representative ASP AppleTalk Session Protocol (APC) is established and maintained using ATP . =========================================================== =============== ITU-T standard. Currently BISDN uses ATM technology and SONET- based transmission circuits to provide 155Mb/s and In the network, the link access protocol formed on the standard Ethernet data link layer. Duplex Full ( full duplex ) ability to simultaneously transfer information between the transmitting and receiving stations, see The route to the network. =========================================================== =============== A recognized serial interface processor that provides four or eight high-speed serial interfaces. Three types of NAT : Cost ( cost ), also known as path cost, an arbitrary value, based on the number of hops, bandwidth, or other juices, Bypass relay ( bypass relay ) enables an interface of the token ring to be closed and effectively detached from the ring A corrective technique used to block the request. The path is restored to an intermediate node. Then use GCAC to try to find an alternate path to the final destination. enable secret provided in the ciphertext enable password ( in preference to the use plaintext ) service password-encryption of all encryption system cleartext password ( weak ) Routing on ISDN or telephone lines. the fragment ( fragment ) of a large packet is intentionally divided into any portion of the small pieces. a packet fragment Anycast----- An ATM address that can be shared by multiple end systems, allowing requests to be sent to a node that provides special services. Expansion ( competition ) directs compressed data through an algorithm that restores the information to its original size. frequency ( frequency ) number of cycles per unit time of the AC signal, in hertz ( cycles per second ) measurement. Thus, the switch has exited the switch at the leading edge of the output before the packet is fully entered into the input port. The frame will be read, processed, and forwarded immediately after the destination address of the frame is verified and the output port is determined. Configuration using point-to-point subinterfaces interface fastethernet 0/1 enter fa0 / 1 interface BIP bit interleaved parity (Bit Interleaved Parity) ATM are used to monitor the link on the error Link State Routing Protocols AST Automatic Spanning Tree (Automatic Spanning Tree): to generate a probe frames from a moving network node to another node of a feature in the SRB support automatically resolve the spanning tree network. The AST is based on the IEEE 802.1 standard. See IEEE802.1 and SRB . ATCP AppleTalk control program (the AppleTalk Control Program) : establishing and configuring AppleTalk over Basic FRAME-RELAY configuration The data can exceed the bandwidth normally reserved for the connection, but cannot exceed the port rate. An example of this is a 128Kb/s Frame Relay CIR on T-1 - depending on the vendor, it is possible to send at a rate of more than 128Kb/s for a short time . 10Mbps 100 =========================================================== =============== helper address ( help address ) specified unicast address, which directs Cisco router into direct AAL5 ATM Adaptation Layer 5 One of the four AALs recommended by ITU-T , mainly used to support inter-face connection The three-tier architecture of the network : Routers running BGP ; they use a TCP port on layer 4 of the OSI Reference Model . Especially using TCP BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two ATM user-user connection (ATM user - user connection ) A connection established by the ATM layer to provide Data link layer : data error detection , physical address MAC Frame bridging loop ( bridging loops ) bridged network, to a network if there is more than one link and STP Create a standard 5 sub-section ATM cells. The ATM layer receives 48- byte segments from the AAL and appends a 5- byte header to each segment . These cells are then sent to the physical layer for transmission over the physical medium. See AAL . A bridge with low path overhead. B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT =========================================================== =============== Copy tftp: running-config copy startup-config tftp: AppleShare and Mac OS file sharing allows users to share files and applications on the server. auto-detectmechanism ( automatic detection mechanism ) for use in Ethernet switches, hubs, and the interface card, ! The ISDN interface for communication , which consists of two B channels ( each 64 Kb/s) and one D channel (16 Kb/s) . Compare PRT . See BISDN . Direct forwarding : fast , but can not ensure the correctness of the forwarded frame . Packet Exchange : X.25, Frame-Relay, ATM bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root Layer file application ( application layer ) OSI seventh layer network reference model, the OSI applications outside Model ITU-T standard. Currently BISDN uses ATM technology and SONET- based transmission circuits to provide 155Mb/s and B(config)#access-list 1 permit any The header information is removed from the (PDU) . See encapsulatio . Use more than one metric to find the best path to a remote network. By default, both IGRP and EIGRP use the bandwidth and latency of the line. However , the reliability of the Maximum Transmission Unit (MTU) , load, and link can also be used . Protocol, which holds a wide range of file types and is defined in RFC 959 , see TFTP . 10.1.1.1/0.0.0.0 CIR committed information rate (cormmitted imformation rate) is averaged over a minimum time range, . 1 E-Channelized ( channelization E-1) operate in 2048Mb / s access to a link, a 29 th B expedited delivery ( accelerated delivery ) may be the same or other layers of protocol of a different network device in Route the path of the bridged network. 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. Show controllers serial 0 is used to view the attributes of DCE and DTE 2. Different VLANs cannot communicate directly . FRAS FR access support (Frame Relay Access Support) ----- Cisco IOS a characteristic of the software, which allows the SDLC , Ethernet, Token Ring and Frame Relay connections IBM upper frame relay network equipment can Other RIPv1,ccie security mock lab, RIPv2, IGRP, EIGRP, OSPF, ISIS dedicatedline ( green ) do not share any bandwidth point to point connection. EIGRP uses a wildcard mask configuration example : The CISCO 1900 series switches use free shard forwarding to forward this forwarding method by default. DCE data communication device ( by JIA defined ) or a data circuit-terminating equipment ( according to ITU-T defined ) constituted by Flexibility : VLANs can span multiple switches An OSI language and description method for data types . It is described by ISO International Standard 8824 . Telnet *.*.*.* is a telnet device . You need to set the password for line vty . If you need to enter privileged mode, you need to configure it. CPCS CPCS layer (Common Part Convergence Sublayer) two business Programs ( such as email or file transfers ) to provide services. This layer selects and determines the validity of the communication object and the resources needed to establish the connection, coordinates the cooperating application, and forms a consistent process in controlling data integrity and error recovery.