問答題網(wǎng)絡(luò)安全涉及到TCP/IP哪幾層?

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2.單項選擇題Customer X has a hub-and-spoke Frame Relay network, with a central office and two branch offices(RemoteA and RemoteB). Each location has only one physical link to the Frame Relay cloud and RemoteB has a router that is not a Cisco router. Since the installation,there is no connectivity between RemoteB and the central office. What is a possible solution to this issue?()

A.Because Frame Relay IETF encapsulation is only configurable at interface level, you must use IETF encapsulation on all routers.
B.This is not a possible scenario. A dedicated Frame Relay link to RemoteB is mandatory at the central office.
C.The router at RemoteB must be replaced by a Cisco router.
D.Use Frame Relay IETF encapsulation on a per-VC basis on the central office router.
E.There is a problem in the Frame Relay cloud, because Cisco routers are compatible with IETF Frame Relay.

4.單項選擇題What is an important consideration that should be taken into account when configuring shaped round robin?()

A.It enables policing.
B.Strict priority is not supported.
C.WRED must be previously enabled.
D.It enables WRR