单项选择题

When configured. MPLS can increase routing redundancy by providing which of the following network topology types?（）

A.Bus
B.Mesh
C.Multipath
D.Ring

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单项选择题

Which of the following devices separates a LAN segment into two collision domains, without affecting the broadcast domain?（）

A.Firewall
B.Bridge
C.Repeater
D.Router

单项选择题

Which of the following protocols is used to encrypt data between web servers and web browsers?（）

A.SMTP
B.SIP
C.HTTP
D.SSL

单项选择题

A user plugged a cable between two network jacks that attach to the same switch and caused a broadcast storm.
Which of the following would have prevented the broadcast storm?（）

A. Spanning tree
B. VLAN tagging
C. 802.1x
D. Port mirroring