（）is not a physical wall, but a lot of virtual data to protect the computer network.

相似题目

• At a certain customer’s site， a NAS is logically in the traffic path but not physically in the trafficpath. The NAS identifies clients by their IP addresses. In which access mode has this NAS beenconfigured to operate？（）

  A .  Layer 2 Edge mode B .  Layer 2 Central mode C .  Layer 2 In-Band mode D .  Layer 3 mode

  查看最佳答案

• A default Frame Relay WAN is classified as what type of physical network?（）

  A . point-to-point B . broadcast multi-access C . nonbroadcast multi-access D . nonbroadcast multipoint.broadcast point-to-multipoint

  查看最佳答案

• A default Frame Relay WAN is classified as what type of physical network?（）

  A . point-to-point   B . broadcast multi-access   C . nonbroadcast multi-access   D . nonbroadcast multipoint  E . broadcast point-to-multipoint&e

  查看最佳答案

• An 802.1Q trunk is not coming up between two switches. The ports on both switches are configured as "switchport mode desirable." Assuming that there is no physical issue，choose two possible causes.（）

  A . Incorrect VTP domain B . Incorrect VTP password C . Incorrect VTP mode D . Incorrect VTP configuration revisio

  查看最佳答案

• The cylinder is fitted with internal liner so that a water space is left （） the liner and the outer wall.

  A . around B . among C . in D . betwee

  查看最佳答案

• Which of following physical abilities is not required as to the routine movement around a vessel?（）

  A . Maintain balance and move with agility B . Climb up and down vertical ladders and stairways C . Open and close watertight doors D . Take part in vessel evacuation procedure

  查看最佳答案

• — The physics exam is not difficult, is it?—（）Even Harry to the top students failed in it.

  A . Yes；belongs B . No；belonged C . Yes；belonging D . No；belonging

  查看最佳答案

• Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?（）

  A . Radiation B . Conduction C . Natural convection D . All of the above

  查看最佳答案

• An 802.1Q trunk is not coming up between two switches. The ports on both switches are configured as "switchport mode desirable." Assuming that there is no physical issue， choose two possible causes.（）

  A . Incorrect VTP domain B . Incorrect VTP password C . Incorrect VTP mode D . Incorrect VTP configuration revisio

  查看最佳答案

• If clearance between a piston and the cylinder wall is excessive, piston slap will occurThe slap itself is caused by （）

  A . alternation of side thrust B . a breakdown of the lube oil film on the cylinder wall C . worn piston boss piston pin bearings D . fluctuating gas pressure in the combustion space

  查看最佳答案

• 18. _____is a physical link between two persons.A. EmbracingB. Gift givingC. TippingD. Handshake

  查看最佳答案

• The Great Wall is a topic for speeches about _______.

  查看最佳答案

• The idea that human behavior is governed by a physical component and a non physical (i.e., spiritual) component is referred to as ____________.

  查看最佳答案

• There is a picture ____ the wall.

  查看最佳答案

• _______________ is a work arrangement that does not require an employee to commute to a central and physical place of work., such as an office building, warehouse, or store.

  查看最佳答案

• Mexicans believe that the real death is not physical death, but no one in the world remembers you.

  查看最佳答案

• When in a crowded situation, what will foreigners do to show the physical contact is involuntary (not a choice)?

  查看最佳答案

• What is NOT mentioned in this unit as a way to keep physically healthy?

  查看最佳答案

• This is our classroom. It is a nice big room, The windows are big and the walls are white. There is a blackboard on the front wall. On the back wall there is a map, It's a map of China.

  There is a big desk. It is for the teacher. There are forty small desks and chairs in the room. They are for our students. Our classroom is a nice big room. A．True B．False

  查看最佳答案

• What we need change is not neccessarily our lifstyle,or our physical conditions, but rather our attitude towards life.

  查看最佳答案

• It is well known that a child does not reach emotional security______ a good many years after physical maturity.

  A．for B．during C．as long as D．until

  查看最佳答案

• A map of China_on the wall of the office A is hung B is hunged C has hung D has hunged 请给出答案后说明理由,

  查看最佳答案

• Common sense would tell us that physically active children may be more likely to become active and healthy adults.In the United States, elementary and middle schools are advised to give students two and a half hours of physical activity a week.That is what the Centers for Disease Control and Prevention and the American Heart Association recommend (推荐). They say high schools should provide about four hours of physical activity each week. Yet many schools across the country have reduced their physical education programs. Criticism of the cuts has led in some places to efforts to give students more time for exercise, not less.

  The future health of Americans may depend on it. Just this week, a study reported that life expectancy (预期寿命) has fallen or is no longer increasing in some parts of the United States. The situation is worst among poor people in the southern states, and especially women. Public health researchers say it is largely the result of increases in obesity (肥胖), smoking and high blood pressure. They also blame differences in health services around the country. In 2006, a study found that only four percent of elementary schools provided daily physical education all year for all grades. This was true of eight percent of middle schools and two percent of high schools. The study also found that 22 percent of all schools did not require students to take any P. E. (体育课). Charlene Burgeson is the executive director of the National Association for Sport and Physical Education. She says one problem for P. E. teachers is that schools are under pressure to put more time into academic subjects. Also, parents may agree that children need exercise in school. Yet many parents today still have bad memories of being chosen last for teams because teachers favored the good athletes in class. But experts say P. E. classes have changed. They say the goal has moved away from competition and toward personal performance, as a way tp build a lifetime of activity. These days, teachers often lead activities like weight training and yoga. Some parents like the idea of avoiding competitive sports in P.E class. Yet others surely dislike that idea. In the end, schools may find themselves in a no-win situation. Why are schools recommended to give students certain time for sports？ A．Because different schools set up different physical education programs. B．Because the physical activity of children will influence their health in adulthood. C．Because nowadays children spend too much time on their studies. D．Because only four percent of elementary schools provided daily physical education.

  查看最佳答案

• A ZXWM M900 or ZXMP M800 device should not be placed against a wall for fear of remov

  是 否

  查看最佳答案