What represents the binary equivalence of 148?（）

多项选择题Two devices on an Ethernet segment sent frames at the same time causing a collision. Which two statements are true?（）

A. Both devices stop transmiting, wait a random period of time, verify the wire is idle, and re-transmit
B. The device with the lowest MAC address is permitted to retrannsmit first
C. The device with the lowest MAC address sends a jam signal to notify all other devices of the collision
D. Both devices send a jam signal to notify all other devices of the collision

单项选择题You have been asked to use a 23-bit network mask to segment the network block 209.18.12.0, How many usable host address will there e per subnet?（）

A. 510
B. 1022
C. 2046
D. 8190

单项选择题You want to log into the router and make a configuration change.After loggin in as the root user, what is the next command you must enter?（）

A. enable
B. configure
C. edit
D. cli

单项选择题What is the operating system do Juniper Networks MX Series routers use?（）

A. IOS
B. MX-OS
C. UNIX
D. Junos OS

单项选择题What information does the help reference command provide?（）

A. a brief description of commands and their default values
B. the serial number and version number of the device used to open a support case with JTAC
C. a list of all the active hardware alarms on the device
D. a display of the current configuration while in operational mode