[单项选择]

We have already covered the topic of network addresses. The first （） in a block (in classes A，B，and C) defines the network address. In classes A，B，and C，if the hostid is all ls， the address is called a direct broadcast address. It is used by a.（） to send a packet to all hosts in a specific network. All hosts will accept a packet having this type of destination address. Note that this address can be used only as a （） address in an IP packet. Note also that this special address also reduces the number of available hostid for each netid in classes A，B，and C.
In classes A，B，and C，an address with all is for the netid and hostid (32 bits) defines a（） address in the current network.A host that wants to send a message to every other host can use this address as a destination address in an IP packet. However，a router will block a packet having this type ofaddress to confine the broadcasting to the （） network. Note that this address belongs to class E.

The first （） in a bl
A. datagram
B. function
C. address
D. service

[单项选择]

We have already covered the topic of network addresses. The first （） in a block (in classes A，B，and C) defines the network address. In classes A，B，and C，if the hostid is all ls， the address is called a direct broadcast address. It is used by a.（） to send a packet to all hosts in a specific network. All hosts will accept a packet having this type of destination address. Note that this address can be used only as a （） address in an IP packet. Note also that this special address also reduces the number of available hostid for each netid in classes A，B，and C.
In classes A，B，and C，an address with all is for the netid and hostid (32 bits) defines a（） address in the current network.A host that wants to send a message to every other host can use this address as a destination address in an IP packet. However，a router will block a packet having this type ofaddress to confine the broadcasting to the （） network. Note that this address belongs to class E.

It is used by a.（） t
A. router
B. switch
C. hub
D. firewall

[单项选择]Information we may request your name, e-mail address, phone number and address.
A. including
B. to include
C. include
D. includes

[简答题]Topic: Should we stop bank loans to businesses which disregard environmental protection
Questions for Reference:
1. In some cities in China, local banks have stopped giving loans to those businesses which have caused pollution to the environment. Do you think the banks are doing the right thing or not
2. What should the local governments or banks do- to shut the businesses which pollute the environment, or help these businesses ’reduce the damage to the environment
3. Could you recommend some effective measures to tackle the problem

[单项选择]

W: Have we agreed where we’re going to meet John on Sunday
M: Well, I talked to the others and nobody seemed to have any idea where they wanted to go.
W: I thought we were going to that restaurant.., what was it
M: ... the McDonald’s at the end of Beijing Road--I suggested it a long time ago.
W: Well--I think we should agree on that.
M: OK, shall I phone the others now
W: No, thanks. It is better for me to do that!

What does the woman want the man to do （　）
A. Change a decision.
B. Make a phone call.
C. Suggest a place to meet.

[单项选择]Never have we had （　） weather before.
A. such a fine
B. such fine
C. so fine
D. so fine a

[单项选择]

Network managers have long awaited practical voice-over-IP (VOIP) solutions. VOIP promises ease network management and decreases (1) by converging a company’s telephony and data infrastructures into one network. And a VOIP solution implemented at a company’s head-quarters with far-reaching branch offices can (2) tremendous amounts of money in long distance phone bills, provided that solution delivers POTS-like voice (3) over the Internet.
VOIP gateways are designed to convert voice from the (4) domain to the circuit switched domain. VOIP solutions use a digital signal processor (DSP) to process the voice data, preparing the voice sample for transmission by compressing voice and removing jitter. The VOIP equipment must comply with the (5) H.323 standard defined by the International Telecommunication Union, or ITU.

3（）
A. quality
B. frequency
C. length
D. quantity