最早的网络安全工具是（）

单项选择题最早的网络安全工具是（）

A.ACS
B.IPS
C.IDS
D.IPSec

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你可能感兴趣的试题

1.单项选择题Which parameter or parameters are used to calculate OSPF cost in cisco routers？（）

A.Bandwidth，Delay，and MTUB
B.andwidth
C.Bandwidth and MTU
D.Bandwidth，MTU，Reliability，Delay，and Load

2.单项选择题Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?（）

A.BackboneFast
B.UplinkFast
C.Root Guard
D.BPDU Guard
E.BPDU Filter

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3.单项选择题Host 1 receives a file from remote server 1. Which MAC address appears as the source address in the header of the frames received by Host 1（）。

A.The MAC address of the NIC in Host 1
B.The MAC address of the NIC in server 1
C.The MAC address of the Fa0/0 interface of router R1
D.The MAC address of the s0/0/0 interface of the router R2

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4.多项选择题By default, each port in a Cisco Catalyst switch is assigned to VLAN1. Which two recommendations are key to avoid unauthorized management access? （）

A.Create an additional ACL to block the access to VLAN 1.
B.Move the management VLAN to something other than default.
C.Move all ports to another VLAN and deactivate the default VLAN.
D.Limit the access in the switch using port security configuration.
E.Use static VLAN in trunks and access ports to restrict connections.
F.Shutdown all unused ports in the Catalyst switch.

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5.多项选择题 Your boss is learning a CCNA training course，refer to the exhibit.The access list has been configured on the S0/0 interface of router RTB in the outbound direction.Which two packets，if routed to the interface，will be denied？（）
access-list 101 denytcp192.168.15.320.0.0.15any eq telnet
access-list 101 permitip any any

A.source ip address:192.168.15.5;destination port: 21
B.source ip address:,192.168.15.37 destination port: 21
C.source ip address:,192.168.15.41 destination port: 21
D.source ip address:,192.168.15.36 destination port: 23
E.source ip address:192.168.15.46;destination port: 23
F.source ip address:,192.168.15.49 destination port: 23

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6.多项选择题Host 1 has just started up and requests a web page from web server 2. Which two statements describe steps in the process Host 1 uses to send the request to web server 2 (choose two)（）。

A.Host 1 addresses the frames to the MAC address of router R1
B.Host 1 looks in its ARP cache for the MAC address of router R1
C.Host 1 addresses the frames to the MAC address of web server 2
D.Host 1 sends the packets to router R1 to be forwarded to web server 2
E.Host 1 sends a broadcast ARP request to obtain the MAC address of webserver2

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7.单项选择题A network engineer wants to allow a temporary entry for a remote user with a specific usename andpassword so that the user can access the entire network over the internet.which ACL can be used？（）

A.reflexive
B.extended
C.standard
D.dynamic

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8.多项选择题Which two statements apply to dynamic access lists？（）

A.they offer simpler management in large internetworks.
B.you can control logging messages.
C.they allow packets to be filtered based on upper-layer session information.
D.you can set a time-based security policy.
E.they provide a level of security against spoofing.
F.they are used to authenticate individual users

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9.多项选择题 Refer to the exhibit.Which two statements are true of the interfaces on switch1？（）

A.A hub is connected directly to FastEthernet0/5
B.FastEthernet0/1 is configured as a trunk link.
C.FastEthernet0/5 has statically assigned mac address
D.Interface FastEthernet0/2 has been disable.
E.Multiple devices are connected directly to FastEthernet0/1.
F.FastEthernet0/1 is connected to a host with multiple network interface cards.

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10.单项选择题How many bits are contained in each field of an IPv6 address?（）

A.24
B.4
C.8
D.16

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