单选题
What are the usable hosts on the 192.168.1.24/29 network?（）
.24 through .48
.24 through .32
.25 through .30
.35 through .31
单选题
Which type of traffic will cause Policed Discards errors on an interface on a JUNOS device?（）
Traffic that does not match any route in the forwarding table.
Traffic that exceeds the bandwidth of the interface.
Traffic of unsupported protocols on that interface.
Traffic arriving on unknown virtual-circuits on that interface.
单选题
Which command sequence shows traffic per queue for an interface?（）
show interfaces queue ge-0/0/0
show statistics queue detail
show interfaces ge-0/0/0 statistics extensive
monitor interface ge-0/0/0 queue
单选题
What is correct regarding the configuration shown below?（） （1）static route 0.0.0.0/0 （2）qualified-next-hop 172.30.25.1 preference 7 （3）next-hop 172.30.25.5
The next-hop 172.30.25.1 is selected because the address has the lowest value.
The next-hop 172.30.25.1 is selected because it is listed first.
The next-hop 172.30.25.1 is selected because it is the lowest protocol preference.
The next-hop 172.30.25.5 is selected because it is the lowest protocol preference.
单选题
Which command configures an address of 192.168.1.1 with a mask of 255.255.255.0 on interface ge-0/0/0?（）
set ip interface ge-0/0/0 address 192.168.1.1 255.255.255.0
set ip interface ge-0/0/0 address 192.168.1.1/24
set interface ge-0/0/0 ip4 address 192.168.1.1 mask 255.255.255.0
set interfaces ge-0/0/0 unit 0 family inet address 192.168.1.1/24
单选题
A router has been configured with the settings shown below: [edit] user@host# show system authentication-order authentication-order [ radius tacplus ]; The router also has a local database that contains the user lab with password lab123. What would happen if both the RADIUS and the TACACS servers are not accessible?（）
The user lab will not be able to login.
The user lab will be authenticated against the local database and will be able to login.
The user lab will receive an error message indicating the router is unable to authenticate due to the authentication servers not responding.
The user will be able to login only if tries to login as the root user.
单选题
You have been asked to use a 25 bit subnet mask to segment the following network block: 209.18.12.0. How many usable will there be per subnet?（）
2 hosts
120 hosts
126 hosts
255 hosts
单选题
When troubleshooting ATM, which command would allow you to test reachability from one side of an ATM cloud to the other?（）
ping atm vci 0.100 interface at-0/1/0 end-to-end
ping atm vci 0.100 interface at-0/1/0 circuit
ping atm vci 0.100 interface at-0/1/0 far-end
ping atm vci 0.100 interface at-0/1/0 final-hop
单选题
On a Juniper router，what is the default file used for syslog messages？（）
system
errors
security
messages
单选题
Given the IP address range 192.168.100.0 through 192.168.100.255, which network mask segments these addresses into 16 subnets?（）
255.255.255.224
255.255.255.240
255.255.255.248
255.255.255.252
