What are three advantages of VLANs?（） [" VLANs establish broadcast domains in switched networks."," VLANs utilize packet filtering to enhance network security."," VLANs provide a method of conserving IP addresses in large networks."," VLANs provide a low-latency internet working alternative to routed networks."," VLANs allow access to network services based on department, not physical location."," VLANs can greatly simplify adding, moving, or changing hosts on the network."]
视象记忆
Since HTTP is one of the most common protocols used in the internet， what should be done at a firewall level to ensure thatthe protocol is being used correctly？ （） [" Ensure that a stateful firewall allows only HTTP traffic destined for valid web server IP addresses."," Ensure that a firewall has SYN flood and DDoS protection applied specifically for valid web servers."," Ensure that your firewall enforces HTTP protocol compliance to ensure that only valid flows are allowed inand outof your network."," Ensure that HTTP is always authenticated."," Ensure that your web server is in a different zone than your backend servers such as SQL and DNS."]
Which two statements are true about traffic shaping？（） ["Out-of-profile packets are queued.","It causes TCP retransmits.","Marking\/remarking is not supported.","It does not respond to BECN and ForeSight Messages.","It uses a single\/two-bucket mechanism for metering."]
间接利用
大卫是谁？耶西的儿子是谁？近来悖逆主人奔逃的仆人甚多。我岂可将饮食和为我剪羊毛人所宰的肉，给我不知道从哪里来的人呢？”这话谁说的？
