Which kind of table will be used by most firewalls today to keep track of the connections through thefirewall？（）A、reflexive ACLB、dynamic ACLC、queuingD、netflowE、state
Which kind of table will be used by most firewalls today to keep track of the connections through thefirewall？（）
- A、reflexive ACL
- B、dynamic ACL
- C、queuing
- D、netflow
- E、state
相关考题：
Whichkindoftablewillbeusedbymostfirewallstodaytokeeptrackoftheconnectionsthroughthefirewall?() A.reflexiveACLB.dynamicACLC.queuingD.netflowE.state
A frame with two，or sometimes four，arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the ______.A.drill stem guideB.guide frameC.drill string frameD.casing guide
Open Shortest Path First (OSPF) was designed as an （ ） gateway protocol, for use in an autonomous system such as a local area network (LAN). It implements Dijkstra's algorithm, also known as the （ ） path first algorithm. As a link-state routing protocol it was based on the link-state algorithm developed for the ARPANET in 1980 and the IS-IS routing protocol. OSPF was first standardised in 1989 as RFC 1131, which is now known as OSPF version 1.Routing protocols like OSPF calculate the shortest route to a destination through the network based on an algorithm. The first routing protocol that was widely implemented, the （请作答此空）, calculated the shortest route based on hops, that is the number of routers that an IP packet had to traverse to reach the destination host. RIP successfully implemented dynamic routing, where routing tables change if the network topology changes. But RIP did not adapt its routing according to changing network conditions, such as data-transfer rate. Demand grew for a dynamic routing protocol that could calculate the fastest route to a destination. （ ） was developed so that the shortest path through a network was calculated based on the cost of the route, taking into account bandwidth, delay and load. Therefore OSPF undertakes route cost calculation on the basis of link-cost parameters, which can be weighted by the administrator. OSPF was quickly adopted because it became known for reliably calculating routes through large and complex local area networks.As a link state routing protocol, OSPF maintains link state （ ）, which are really network topology maps, on every router on which it is implemented. The state of a given route in the network is the cost, and OSPF algorithm allows every router to calculate the cost of the routes to any given reachable destination. Unless the administrator has made a configuration, the link cost of a path connected to a router is determined by the bit rate (1 Gbit/s, 10 Gbit/s, etc) of the interface. A router interface with OSPF will then advertise its link cost to neighbouring routers through multicast, known as the hello procedure. All routers with OSPF implementation keep sending hello packets, and thus changes in the cost of their links become known to neighbouring routers. The information about the cost of a link, that is the speed of a point to point connection between two routers, is then cascaded through the network because OSPF routers advertise the information they receive from one neighbouring router to all other neighbouring routers. This process of flooding link state information through the network is known as synchronisation. Based on this information, all routers with OSPF implementation continuously update their link state databases with information about the network topology and adjust their routing tables.OSPF has become a popular dynamic routing protocol. Other commonly used dynamic routing protocols are the RIP and the Border Gateway Protocol (BGP). Today routers support at least one interior gateway protocol to advertise their routing tables within a local area network. Frequently implemented interior gateway protocols besides OSPF are RIP, IS-IS, and the proprietary Interior Gateway Routing Protocol (IGRP) by Cisco.A.OSPFB.RIPC.IS-ISD.EIGRP
Which two statements are true regarding the USING clause in table joins?（）A、It can be used to join a maximum of three tables B、It can be used to restrict the number of columns used in a NATURAL join C、It can be used to access data from tables through equijoins as well as nonequijoins D、It can be used to join tables that have columns with the same name and compatible data types
Which two actions， when taken in combination， will result in an effective network security solution？（）A、 develop a policy for securing the networkB、 monitor and test network activities for vulnerabilitiesC、 implement reflexive access listsD、 implement dynamic access listsE、 select and implement a single comprehensive virus protection program
It’s a configuration that experts are calling a "firewall sandwich，" with the second firewall providinga second level of load balancing after traffic down. What is meant by the term "firewall sandwich"？（）A、 single layer of firewallingB、 multiple layers of firewallingC、 firewall connections in either an active or standby stateD、 an architecture in which all traffic between firewalls goes through application-specific servers
What is a static packet-filtering firewall used for ？（）A、It validates the fact that a packet is either a connection request or a data packet belonging to a connectionB、It evaluates network packets for valid data at the application layer before allowing connectionsC、It analyzes network traffic at the network and transport protocol layersD、It keeps track of the actual communication process through the use of a state table
What is meant by the term "firewall sandwich"？（）A、multiple layers of firewallingB、a method of operating firewalls from multiple vendorsC、firewall connections in either an active or standby stateD、an architecture in which all traffic between firewalls goes through application-specific serversE、an architecture in which all traffic between firewalls goes through application-specific gateways
While performing a site survey to document the existing environment before implementing a new HACMP cluster， it was discovered that a port filtering firewall was being used to protect the production system. The plan is to continue using the firewall and add a second firewall to avoid a single point of failure. Each node in the two-node cluster will have all of its network adapters connected to the firewalls， and all connections to the nodes will pass through these firewalls. What must be considered about HACMP in a firewall environment？（） A、 Firewalls are not supported in a HACMP environment.B、 HACMP uses only TCP/IP so firewalls are not relevant.C、 Specific ports must be open for HACMP communications.D、 Dynamic routing must be used to properly route packets in a firewall-protected environment.
Which of the following commands is used to observe the current state of the routing table？（）A、routeB、lsattrC、netstatD、ifconfig
What is the role of route preference?（）A、It is used as a tie breaker when the same prefix is available through multiple sourcesB、It is used to determine which routes to accept into the routing tableC、It is used to select the best route between multiple equal-cost pathsD、It is used to select which routing table to use for forwarding
What is the role of route preference?（）A、It is used as a tiebreaker when the same prefix is available through multiple protocols.B、It is used to determine the preferred path to a given destination.C、It is used to select the best route between multiple equal-cost paths.D、It is used to select which routing table to use for forwarding.
You observe that in your PROD database， customer information is being modified by some unauthorized users. You want to keep track of all of the transactions happening on the table using PL/SQL. Which type of PL/SQL subprogram or construct would you use to accomplish this task？（）A、functionsB、packagesC、proceduresD、database triggersE、anonymous PL/SQL block
单选题Which kind of table will be used by most firewalls today to keep track of the connections through thefirewall？（）Areflexive ACLBdynamic ACLCqueuingDnetflowEstate
单选题It’s a configuration that experts are calling a "firewall sandwich，" with the second firewall providinga second level of load balancing after traffic down. What is meant by the term "firewall sandwich"？（）A single layer of firewallingB multiple layers of firewallingC firewall connections in either an active or standby stateD an architecture in which all traffic between firewalls goes through application-specific servers
多选题Which two statements are true regarding the USING clause in table joins?（）AIt can be used to join a maximum of three tablesBIt can be used to restrict the number of columns used in a NATURAL joinCIt can be used to access data from tables through equijoins as well as nonequijoinsDIt can be used to join tables that have columns with the same name and compatible data types
多选题Which two actions， when taken in combination， will result in an effective network security solution？（）Adevelop a policy for securing the networkBmonitor and test network activities for vulnerabilitiesCimplement reflexive access listsDimplement dynamic access listsEselect and implement a single comprehensive virus protection program
单选题What is a static packet-filtering firewall used for ？（）AIt validates the fact that a packet is either a connection request or a data packet belonging to a connectionBIt evaluates network packets for valid data at the application layer before allowing connectionsCIt analyzes network traffic at the network and transport protocol layersDIt keeps track of the actual communication process through the use of a state table
单选题A frame with two，or sometimes four，arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the（）.Adrill stem guideBguide frameCdrill string frameDcasing guide
单选题Which of the materials listed is used as the dynamic seal material on mechanical seals installed on most centrifugal pumps used in water service?（）ACopperBCopper and carbonCCarbonDBronze
单选题What is the role of route preference?（）AIt is used as a tie breaker when the same prefix is available through multiple sourcesBIt is used to determine which routes to accept into the routing tableCIt is used to select the best route between multiple equal-cost pathsDIt is used to select which routing table to use for forwarding
单选题What is the role of route preference?（）AIt is used as a tiebreaker when the same prefix is available through multiple protocols.BIt is used to determine the preferred path to a given destination.CIt is used to select the best route between multiple equal-cost paths.DIt is used to select which routing table to use for forwarding.
单选题Which of the following is INCORRECT according to the passage?ACognition enhancers may be used as coffee as today.BIt could become as common as a cup of coffee.CIt may help people sleep more efficiently.DThis kind of drugs is as tasty as coffee.
单选题What is meant by the term "firewall sandwich"？（）Amultiple layers of firewallingBa method of operating firewalls from multiple vendorsCfirewall connections in either an active or standby stateDan architecture in which all traffic between firewalls goes through application-specific serversEan architecture in which all traffic between firewalls goes through application-specific gateways