Which statement is true when ICMP echo and echo-reply are disabled on edge devices？（）A、Pings are allowed only to specific devices.B、CDP information is not exchanged.C、Port scans can no longer be run.D、Some network diagnostic data is lost.E、Wireless devices need to be physically connected to the edge device.F、OSPF routing needs the command ip ospf network non-broadcast enabled.
Which statement is true when ICMP echo and echo-reply are disabled on edge devices？（）
- A、Pings are allowed only to specific devices.
- B、CDP information is not exchanged.
- C、Port scans can no longer be run.
- D、Some network diagnostic data is lost.
- E、Wireless devices need to be physically connected to the edge device.
- F、OSPF routing needs the command ip ospf network non-broadcast enabled.
相关考题：
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单选题Which statement is true when ICMP echo and echo-reply are disabled on edge devices？（）APings are allowed only to specific devices.BCDP information is not exchanged.CPort scans can no longer be run.DSome network diagnostic data is lost.EWireless devices need to be physically connected to the edge device.FOSPF routing needs the command ip ospf network non-broadcast enabled.
单选题Which statement about CiscoWorks 2000 Inventory Manager is true?（）AIt uses SNMP v1.BIt scans devices for hardware information.CIt scans and records the operational status of devices.DWhen the configuration of a device changes, the inventory is automatically updated.
多选题You need to configure port security on switch R1. Which two statements are true about this technology？ （）APort security can be configured for ports supporting VoIP.BWith port security configured， four MAC addresses are allowed by default.CThe network administrator must manually enter the MAC address for each device in order for the switch to allow connectivity.DWithsecurity configured， only one MAC addresses is allowed by default.EPort security cannot be configured for ports supporting VoIP.
单选题Which statement about CiscoWorks 2000 Inventory Manager is true？（）A It uses SNMP v1.B It scans devices for hardware information.C It scans and records the operational status of devices.D When the configuration of a device changes， the inventory is automatically updated.
单选题Which statement is true regarding proxy ARP？（）AProxy ARP is enabled by default on stand-alone JUNOS security devices.BProxy ARP is enabled by default on chassis clusters.CJUNOS security devices can forward ARP requests to a remote device when proxy ARP is enabled.DJUNOS security devices can reply to ARP requests intended for a remote device when proxy ARP is enabled