What is a requirement to enable Cisco IOS IPS with 5.x signature？（） disable Zone-Based Firewall as the two features are not compatible。 disable Cisco Express Forwarding as the two features are not compatible。 generate a certificate and export on Cisco.com to receive a signature update。 import the public RSA key from the Cisco IPS team that allows the router to verify that a signatureupdate （which was signed by this key） comes from Cisco。
根据附图依次选出聚光灯、光束灯、散光灯的符号（）。 A）是光束灯的符号。 B）是聚光灯的符号。 C）是散光灯的符号。 D）是幻灯的符号。 E）是回光灯的符号。
You are deploying two core switches， one in each building， 50 km away from each other. The cross-connection between them will be a Layer 2 2-gigabit EtherChannel with an 802.1Q trunk. You configured it correctly but the link does not come up. The port is in the "admin up" state， and the line protocol is in the "down" state. The fiber link is OK. What would be the most likely reason for the link not to come up？（） The switches are not the same model.。 You are not using the correct SFP.。 You are not using correct optical media converters.。 Configuration should be modified， because the distance is longer.。
写传道书的总意识什么？
what is ABR？
当许多国人为美丽城市夜景感到骄傲的时候，并没有考虑到：这些所谓的“不夜城”恰恰是中国光污染的重灾区。下列现象中会造成光污染的是（）。
