As a TestKing instructor you are giving a lecture on th……

多项选择题Which three of these are benefits of telepresence and video collaboration?（）

A.do more with less
B.provide a unified tool for all business processes
C.influence competitive advantage and business agility through faster decision-making and new business processes and models
D.eliminate miscommunication
E.reduce the need to personalize communications with customers
F.transform your business and organization and be greener

单项选择题Wide Area Network (WAN) is a computer network that covers a broad areA. Which statement is correct for wide-area network (WAN)?（）

A.Limited in a single building, a group of buildings, or even a single room
B.Crosses metropolitan, regional, or national boundaries
C.Encompasses an entire city or metropolitan area and connects multiple local-area networks (LANs)
D.Connects client devices wireless protocol

单项选择题Which WLAN device is often used to make wireless connections between buildings or campuses?（）

A.access point
B.client adapter
C.bridge
D.router

单项选择题Which software-based security threat is typically spread from user to user via e-mail?（）

A.Data interception
B.Virus
C.Trojan horse
D.Denial of service

单项选择题What does a router do?（）

A.Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)
B.Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)
C.Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN)
D.Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN)