免费智能真题库 > 历年试卷 > 网络管理员 > 2012年上半年 网络管理员 上午试卷 综合知识
  第74题      
  章/节:   专业英语       

 
We have already covered the topic of network addresses. The first (71) in a block (in classes A, B, and C) defines the network address. In classes A, B, and C, if the hostid is all Is, the address is called a direct broadcast address. It is used by a (72) 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 (73) 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) define a (74) 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 of address to confine the broadcasting to the (75) network. Note that this address belongs to class E.
 
 
  A.  unicast
 
  B.  multica
 
  C.  broadca
 
  D.  anycas
 
 
 

 
  第73题    2010年上半年  
   65%
Both bus and tree topologies are characterized by the use of multipoint(71).For the bus, all stations attach, through ap..
  第71题    2017年下半年  
   55%
The Hypertext Transfer Protocol , the Web's (71)protocol , is at the heart of the Web. HTTP is implemented in two prog..
  第75题    2017年上半年  
   72%
CSMA,although more efficient than ALOHA or slotted ALOHA,still has one glaring inefficiency.If the medium is busy,the st..
   题号导航      2012年上半年 网络管理员 上午试卷 综合知识   本试卷我的完整做题情况  
1 /
2 /
3 /
4 /
5 /
6 /
7 /
8 /
9 /
10 /
11 /
12 /
13 /
14 /
15 /
 
16 /
17 /
18 /
19 /
20 /
21 /
22 /
23 /
24 /
25 /
26 /
27 /
28 /
29 /
30 /
 
31 /
32 /
33 /
34 /
35 /
36 /
37 /
38 /
39 /
40 /
41 /
42 /
43 /
44 /
45 /
 
46 /
47 /
48 /
49 /
50 /
51 /
52 /
53 /
54 /
55 /
56 /
57 /
58 /
59 /
60 /
 
61 /
62 /
63 /
64 /
65 /
66 /
67 /
68 /
69 /
70 /
71 /
72 /
73 /
74 /
75 /
 
第74题    在手机中做本题