Birthday attacks are used against which of the following？（）

A . use different fire hose pressures B . use fire hoses of different sizes C . not attack the fire from opposite sides D . not wear protective clothing

A . Virus B . Worm C . Trojan D . Executable

A .  ARP spoofing attacks are attempts to redirect traffic to an attacking host by encapsulating a  false 802.1Q header on a frame and causing traffic to be delivered to the wrong VLAN. B .  ARP spoofing attacks are attempts to redirect traffic to an attacking host by sending an ARP  message with a forged identity to a transmitting host. C .  MAC address flooding is an attempt to force a switch to send all information out every port byoverloading the MAC address table. D .  ARP spoofing attacks are attempts to redirect traffic to an attacking host by sending an ARP  packet that contains the forged address of the next hop router. E .  MAC address flooding is an attempt to redirect traffic to a single port by associating that port  with all MAC addresses in the VLAN.

A .  Attacks are prevented by utilizing the port-security feature. B .  An end station attempts to gain access to all VLANs by transmitting Ethernet frames in the  802.1q encapsulation. C .  Configuring an interface with the switchport mode dynamic command will prevent VLAN  hopping. D .  An end station attempts to redirect VLAN traffic by transmitting Ethernet frames in the 802.1q  encapsulation. E .  Configuring an interface with the "switchport mode access" command will prevent VLAN  hopping.

A . ASM B . BiDirPIM C . PIM-SMRP D . RP-Switchover E . SourceSpecificMulticast

A . Executable B . Trojan C . Virus D . Worm

A . denial of service B . brute force C . reconnaissance D . Trojan horse

A . MARS B . NAC C . VPN D . IPS

A . dictionary B . bit-flip and replay C . mac spoofing D . man-in-the-middle

A .  Configure only trusted interfaces with root guard. B .  Implement private VLANs （PVLANs） to carry only user traffic. C .  Implement private VLANs （PVLANs） to carry only DHCP traffic. D .  Configure only untrusted interfaces with root guard. E .  Configure DHCP spoofing on all ports that connect untrusted clients. F .  Configure DHCP snooping only on ports that connect trusted DHCP servers. G .  None of the other alternatives apply

A . Inoculate systems by applying update patches.  B . Limit traffic rate.  C . Apply authentication.  D . Quarantine infected machines.  E . Enable anti-spoof measures.

A . denial of service B . brute force C . reconnaissance D . Trojan horse&e

A . Access attacks can consist of password attacks，trust exploitation，port redirection，and man-in-the-middle attacks. B . Access attacks can consist of UDP and TCP SYN flooding，ICMP echo-request floods，and ICMP directed broadcasts. C . DoS attacks can be reduced through the use of access control configuration，encryption，and RFC 2827 filtering. D . DoS attacks can consist of IP spoofing and DDoS attacks. E . IP spoofing can be reduced through the use of policy-based routing. F . IP spoofing exploits known vulnerabilities in authentication services， FTP services，and web services to gain entry to web accounts，confidential databases，and other sensitive information.

A . contain，inoculate，quarantine，and treat B . inoculate，contain，quarantine，and treat C . quarantine，contain，inoculate，and treat D . preparation，identification，traceback，and postmortem E . preparation，classification，reaction，and treat F . identification，inoculation，postmortem，and reactio

A . Access attacks can consist of password attacks，trust exploitation，port redirection，and man-in-the-middle attacks. B . Access attacks can consist of password attacks，ping sweeps，port scans，and man-in-the-middle attacks. C . Access attacks can consist of packet sniffers，ping sweeps，port scans，and man-in-the-middle attacks. D . Reconnaissance attacks can consist of password attacks，trust exploitation，port redirection and Internet information queries. E . Reconnaissance attacks can consist of packet sniffers，port scans，ping sweeps，and Internet information queries. F . Reconnaissance attacks can consist of ping sweeps，port scans，man-in-middle attacks and Internet information queries.

A . Place unused ports in a common VLAN. B . Implement private VLANs. C . Implement DHCP snooping. D . Implement port security. E . Implement VLAN access maps.

A . Signature-based detection B . Anomaly-based detection C . Honey pot detection D . Policy-based detectio

A .  Man-in-themiddle attack B .  Spoof attack C .  Land.C attack D .  Buffer Overflow E .  Day zero attack F .  Trojan Horse

A、one B、that C、anyone D、everything

A．or B． of C． in D． to

A．methods B． cases C． hands D． sections

A．Hijacking attack B．Virus attack C．Dictionary attack D．Man-in-the-middle attack