以下各句中，加下划线的词语使用恰当的一项是（)。A．有两个不甚重要的人物有真人的影子，作者信而有

A.It can run entirely on the Internet.

B.A minimum of two modules needs to be implemented for an organization.

C.It is engineered to work as an integrated system on a single IT infrastructure.

D.It supports multi-directional flows of business information within an organization.

A. You can see the contents of the log file by entering the show log <filename> command

B. Trace options will send information to your screen automatically

C. Trace options are limited to one protocol at a time

D. The file name and set of flags may be specified when enabling trace options

A. SCREEN options offer protection against various attacks

B. SCREEN options are deployed prior to route and policy processing in first path packet processing

C. SCREEN options are deployed at the ingress and egress sides of a packet flow

D. SCREEN options, you must take special care to protect OSPF

A.Traceroute transmits ICMP echo-request packets.

B.Traceroute transmits UDP packets.

C.Traceroute receives ICMP echo-reply packets.

D.Traceroute receives ICMP port-unreachable packets.

Here shows the returns of firms X and Y under different states of economy. Which of the following results regarding the (expected return, risk) of the two assets is correct？

A、X (30%, 10%), Y (20%, 20%); Y is riskier

B、X (10%, 10%), Y (10%, 11%); Y is riskier

C、X (10%, 25.30% ), Y (10%, 12.65% ); X is riskier

D、X (10%, 12.30% ), Y (20%, 20.65% ); X is riskier

A.The Routing Engine handles all exception traffic.

B.The Routing Engine synchronizes the route table with the PFE

C.The Routing Engine is hot-pluggable.

D.The Routing Engine controls the PFE

(c) Identify and evaluate other strategic options ONA could consider to address the airline’s current financial and

operational weaknesses.

Note: requirement (c) includes 2 professional marks (10 marks)

A.RSTP cannot operate with PVST+.

B.RSTP defines new port roles.

C.RSTP defines no new port states.

D.RSTP is a proprietary implementation of IEEE 802.1D STP.

E.RSTP is compatible with the original IEEE 802.1D STP.

A. LDP uses Down Stream On Demand.

B. RSVP uses Down Stream On Demand.

C. LDP uses Down Stream Unsolicited.

D. RSVP uses Down Stream Unsolicited.