Which type if port is used by HTTP for the control connection？（)

A.Ephemeral

B.Well-known

C.Reserved

D.Static

A.IXIA can test delay and throughout by Ixia IxExplorer.

B.Hp37718 and ANT20 can serve to test SDH type index, such as E1/STM1 port index performance.

C.Time Acc can test 1588 related index.

D.Network switching time cannot be measured only with a data network analyzer, but can be calculated manually.

Which of the following is true of the Glomar Challenger？

A．It is a type of submarine.

B．It is an ongoing project.

C．It has gone on over 100 voyages.

D．It made its first DSDP voyage in 1968.

A.An analyst can perform a one-tailed or a two-tailed test.

B.A type I error is acceptance of a hypothesis that is actually false.

C.A type II error is the acceptance of a hypothesis that is actually false.

D.The significance level is the risk of making a type I error.

A.Port,PIC,FPC,type

B.Type,port,PIC,FPC

C.Type,FPC,PIC,port

D.FPC,PIC,port,type

B.Extended ACL, matching source IP address, IP protocol type, TCP source port No., TCP destination port No., UDP source port No., UDP destination port No., ICMP type, ICMP Code, DSCP (DiffServ Code Point), ToS and Precedence.

C.L2 ACL, matching source MAC address, destination MAC address, source VLAN ID, L2 Ethernet protocol type, and 802.1p preference value.

D.Mixed ACL, matching source MAC address, destination MAC address, source VLAN ID, source IP address, destination IP address, TCP source port No., TCP destination port No., UDP source port No., and UDP destination port No.

听力原文：W: Excuse me, sir. I'm new here. Could you show me how to make a phone call？

M: Sure. Have you got any small change？

W: Yes, I've got a quarter and some dimes and nickels.

M: Quarter will do. Now, first insert the quarter into the hole. When you hear the dial tone, a steady buzzing sound, dial the number you want.

W: If the line is busy...

M: When you hear a short regular beeping sound about every second, you hang up and your coin will be returned to you. Then do it all over again.

W: The trouble is I don't know the phone number of my friend.

M: That's easy. Here are two phone books. This is what we call the "White Pages", which lists the names, addresses, and tele-phone numbers of people in the area. Remember, the names are listed alphabetically with the last or surname first.

W: What about the other book？

M: This is the "Yellow Pages", which lists all businesses, hotels, theaters, schools and services in the area. This listing is arranged according to the type of establishment.

W: Thanks. I'll have a try.

M: Go ahead.

(20)

A．A quarter.

B．A dollar.

C．A dime.

D．A nickel.

W: I recently read that in ten years we'll be wearing clothes that change with the weather. So when it's cold, our clothes will warm up, and when it's hot, our clothes will cool off.

M: Oh, very funny! So we'll be wearing huge clothes with built-in air-conditioners and heaters.

W: I'm serious. Researchers have discovered a method of treating fibers with plastic crystals which can store and release heat as the temperature changes. These treated fibers absorb more heat than untreated fibers. Researchers are still working with this, but soon this process will be widespredad.

M: That's fascinating. I didn't know that fibers can store heat. How does that work？

W: These fibers work with the heat by rearranging their structures.

M: That's truly unbelievable. You said that it'll be a decade before this type of clothes will be available. What a shame! I don't think I can wait that long.

What's the man's first reaction to what the woman describe？

A．He is shocked.

B．He is excited.

C．He is upset.

D．He is doubtful.

A.UDP port 53

B.UDP port 23

C.TCP port 53

D.TCP port 23