How can an administrator determine if a router has been configured when it is first powered up?（）

单项选择题When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?（）

A. when all switches have the same BID as the root switch
B. when all switches have received the MAC address of each neighboring switch
C. when every enabled switch port has been assigned a unique identifier
D. when every operating switch port is in either the blocking or forwarding state
E. when all switches are in either client, server, or transparent mode

单项选择题At a branch location, TestKing.com has deployed a non modular router that is equipped with two serial interfaces and two Ethernet interfaces.What additional equipment must be used to allow the branch office to connect to the central office by using an ISDN service?（）

A. a serial cable with a V.35 to RJ45 adapter
B. a CSU/DSU
C. an external ISDN TA and NT1
D. The non-modular router cannot connect to an ISDN service. The network administrator must purchase a modular router with an ISDN BRI-U card.

单项选择题At a branch location, TestKing.com has deployed a non modular router that is equipped with two serial interfaces and two Ethernet interfaces.What additional equipment must be used to allow the branch office to connect to the central office by using an ISDN service?（）

A. a serial cable with a V.35 to RJ45 adapter
B. a CSU/DSU
C. an external ISDN TA and NT1
D. The non-modular router cannot connect to an ISDN service. The network administrator must purchase a modular router with an ISDN BRI-U card.

多项选择题What are two results of entering the Switch(config)# vtp mode client command on a Catalyst switch?（）

A. The switch will ignore VTP summary advertisements
B. The switch will forward VTP summary advertisements
C. The switch will process VTP summary advertisements
D. The switch will originate VTP summary advertisements
E. The switch will create, modify and delete VLANs for the entire VTP domain

单项选择题A group of hosts are physically connected to the same switch. The hosts are used by employees of different departments and therefore do not need to directly exchange data on a regular basis.Which technology can a network administrator deploy to reduce unnecessary broadcast traffic between these hosts?（）

A. Micro segmentation
B. Transparent switching
C. peer-to-peer networking
D. port security
E. store-and-forward switching
F. virtual local area networks