Which of the following should be used to restrict access to

第1题：

Which two statements are true regarding the USING clause in table joins?（）

• A、It can be used to join a maximum of three tables 
• B、It can be used to restrict the number of columns used in a NATURAL join 
• C、It can be used to access data from tables through equijoins as well as nonequijoins 
• D、It can be used to join tables that have columns with the same name and compatible data types

第2题：

Which of the following could be used to restrict access to the local web server to only certain IP addresses？（）

• A、 Create an ACL.
• B、 Create an application exception.
• C、 Configure IPSec.
• D、 Block port 80.

第3题：

第4题：

Which of the following should be used to check a serial port for functionality?（）

• A、Loopback plug
• B、Toner probe
• C、Multimeter
• D、Cable tester

第5题：

A network technician is installing a series of three access points to cover the entire wing of a building. Each access point has a wired connection and 802.11g is being used for the wireless transmission. Which of the following channels should be used for the access points？（）

• A、Channels 1-6-11
• B、Channels 1-3-5
• C、Channels 7-11-1
• D、Channels 2-4-6

第6题：

Which of the following technologies can be used to remotely gain access to a server console？（）

• A、PS/2 KVM
• B、LDAP
• C、VNC
• D、Remote desktop
• E、VPN

第7题：

Which of the following would be the BEST way to restrict access to the WAP from certain clients?（）

• A、Disable DHCP server
• B、Enable WEP encryption
• C、Disable SSID broadcast
• D、Enable MAC filtering

第8题：

第9题：

Which of the following is used to deny or allow access to a wireless router network?（）

• A、SSID
• B、SNMP
• C、IMAP
• D、MAC filtering

第10题：

An administrator needs to configure a server to restrict mail traffic to an application server for security reasons.  Which of the following techniques can be used to manage this？（）

• A、 PAT
• B、 ACLs
• C、 Subnet masking
• D、 Port blocking