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73题      
分类   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.  source
 
  B.  destination
 
  C.  local
 
  D.  remote
 
 
 

  相关试题     专业英语    更多>  
 
  第74题    2017年上半年  
   59%
CSMA,although more efficient than ALOHA or slotted ALOHA,still has one glaring inefficiency.If the medium is busy,the st..
  第74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72题    2015年下半年  
   60%
VPN connections allow users working at home or on the road to connect in a secure fashion to a (71) corporate server u..
 




 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73题