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

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单项选择题

According to the OSI model, which of the following layers is responsible for providing reliablecommunication?（）

A.Transport
B.Network
C.Session
D.Data Link

单项选择题

A technician receives a call on monday morning that several computers will not connect to the network.
The technician determines that the computers left on over the weekend are functional and those that were turned off over the weekend are not functioning.
Which of the following is the MOST likely source of the problem?（）

A.DHCP is not functioning.
B.WINS needs to be restarted.
C.DNS is not functioning.
D.LDAP is not functioning.

单项选择题

A remote user cannot connect to the office via VPN. The user has established Internet connectivity.
Which of the following is the MOST likely next step in troubleshooting?（）

A.Power cycle the VPN concentrator at the office.
B.Determine if the VPN service is running at the office.
C.Reinstall the VPN client at the remote computer.
D.Determine if the user has the correct VPN address and password.