单项选择题

Which of the following should be implemented to allow a user to securely connect to a network driveremotely?（）

A. Enable file and print share
B. FTP
C. VPN
D. Map a drive

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单项选择题

A company has installed a new 802.11g point-to-point connection between two buildings and isexperiencing low throughput across the link. The current setup involves a wireless bridge on the roof with an omni-directional antenna. Which of the following would BEST improve the link performance?（）

A. Replace the wireless bridges with wireless access points.
B. Install bi-directional amplifiers at both sites.
C. Configure channel hopping on both wireless bridges.
D. Replace the omni-directional antennas with Yagi antennas

单项选择题

A user is unable to reach the Internet. The technician asks the user to do an IPCONFIG /all. The userreports that their IP address is 172.16.1.18, subnet mask is 255.255.255.0, and their default gateway is 172.16.1.18. Which of the following is the cause of the problem?（）

A. Default gateway
B. Network cable
C. Subnet mask
D. CNAME record

单项选择题

Which of the following are considered link state protocols?（）

A. RIPv2 and EIGRP
B. EGP and IGP
C. OSPF and IS-IS
D. RIP and BGP