N10-004单项选择题每日一练(2019.01.24)

单项选择题
A user on a network cannot access any network resources. The link light on the computer showsthat a connection is present. Which of the following is the MOST likely cause of the problem?（）
A. The wrong cable type has been used.
.B. IDS has shut down the computer's switch port.
C. The port on the switch is configured incorrectly
D. Spanning tree protocol was implemented.
单项选择题
Which of the following would be used to lock all of the primary communication equipment of abuilding, including its demarcation point?（）
A.MTR
B.MDF
C.Smart jack
D.IDF
单项选择题
Computers on a small network are not able to receive new addresses from the DHCP server.However, the administrator has checked the server and ensured it is connected, responding, and functional.Which of the following is the MOST likely problem in this scenario?（）
A. The DHCP server has an incorrect gateway configured.
B. The DHCP server was incorrectly configured with a six hour lease time on addresses.
C. The DHCP server was incorrectly configured with no-expiring lease time on addresses.
D. The DNS server is no longer functional and internal name-address resolution is down.
单项选择题
A Stateful firewall is MOST useful in protecting against which of the following network scans?（）
A.PING
B.UDP
C.Xmas
D.ACK
单项选择题
Which of the following uses a ring topology?（）
A.DSL
B.Ethernet
C.DOCSIS
D.SONET