You have been allocated a 192.168.100.0/22 network. How many usable host are available?（）

单项选择题What represents the decimal equivalence of 01101110?（）

A. 5
B. 96
C. 110
D. 118

单项选择题Which network mask is the equivalent of 255.255.248.0?（）

A. /20
B. /21
C. /22
D. /23

多项选择题Which two statements are true regarding an Ethernet collision domain?（）

A. If a switch is used, the collision domain is limited to each device and the switch
B. If a hub is used, the collision domain is limited to each device and the hub
C. If a hub is used, the collision domain includes all devices connected to the hub
D. If a switch is used, the collision domain includes all devices connected to the switch

多项选择题Which two statements accurately describe a broadcast domain?（）

A. Broadcast domains requiere that the participating devices connect to common swithces or hubs
B. Broadcast domains consist of devices reachable by frames addressed to the Layer 2 broadcast address
C. Broadcast domains requiere a gateway device such a router
D. Broadcast domains consist of devices that reside on the same VLAN

单项选择题You need to control SSH, HTTP, and Telnet access to an MX240 router through any interface. You have decided to use a firewall filter. How should you apply the firewall filter?（）

A. as an outbound filter on interface fxp0
B. as an outbound filter on interface lo0
C. as an inbound filter on interface fxp0
D. as an inbound filter on interface lo0