3.三十道子网划分的题目
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2020年07月30日 17:09
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TestKing network was assigned the Class C network 199.166.131.0 from the
ISP. If the administrator at TestKing were to subnet this class C network using the
255.255.255.224 subnet mask, how may hosts will they be able to support on each
subnet?
A. 14
B. 16
C. 30
D. 32
E. 62
F. 64
is the subnet for the hostIPaddress
201.100.5.68/28?
A. 201.100.5.0
B. 201.100.5.32
C. 201.100.5.64
D. 201.100.5.65
E. 201.100.5.31
F. 201.100.5.1
a subnet mask of 255.255.255.224, which of the IP addresses below can you assign to the hosts on this subnet? (Select all that apply)
A. 16.23.118.63
B. 87.45.16.159
C. 92.11.178.93
D. 134.178.18.56
E. 192.168.16.87
F. 217.168.166.192
ISP has assigned you the following IP address and subnet mask:
IP address: 199.141.27.0
Subnet mask: 255.255.255.240
Which of the following addresses can be allocated to hosts on the resulting subnet?
(Select all that apply)
A. 199.141.27.2
B. 199.141.27.175
C. 199.141.27.13
D. 199.141.27.11
E. 199.141.27.208
F. 199.141.27.112
IP network 210.106.14.0 is subnetted using a /24 mask. How many usable
networks and host addresses can be obtained from this?
A. 1 network with 254 hosts
B. 4 networks with 128 hosts
C. 2 networks with 24 hosts
D. 6 networks with 64 hosts
E. 8 networks with 36 hosts
that you have a class B IP address network range, which of the subnet masks
below will allow for 100 subnets with 500 usable host addresses per subnet?
A. 255.255.0.0
B. 255.255.224.0
C. 255.255.254.0
D. 255.255.255.0
E. 255.255.255.224
have a class C network, and you need to design it for 5 usable subnets with each subnet handling a minimum of 18 hosts each. Which of the following network masks should you use?
A. 225.225.224.0.
B. 225.225.240.0.
C. 225.225.255.0.
D. 255.255.255.224
E. 225.225.255.240
201.145.32.0 network is subnetted using a /26 mask. How many networks and IP hosts per network exists using this subnet mask?
A. 4 networks with 64 hosts
B. 64 networks and 4 hosts
C. 2 networks and 62 hosts
D. 62 networks and 2 hosts
E. 6 network and 30 hosts
have a class B network with a 255.255.255.0 mask. Which of the statements
below are true of this network? (Select all valid answers)
A. There are 254 usable subnets.
B. There are 256 usable hosts per subnet.
C. There are 50 usable subnets.
D. There are 254 usable hosts per subnet.
E. There are 24 usable hosts per subnet.
F. There is one usable network.
many usable IP addresses can you get from a conventional Class C address?
A. 128
B. 192
C. 254
D. 256
E. 510
ISP assigned you a full class B address space. From this, you need at least 300
sub-networks that can support at least 50 hosts each. Which of the subnet masks below are capable of satisfying your needs? (Select two).
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.252.0
he network address for a host with the IP address 201.100.5.68/28?
A. 201.100.5.0
B. 201.100.5.32
C. 201.100.5.64
D. 201.100.5.65
E. 201.100.5.31
F. 201.100.5.1
of the following IP addresses fall into the CIDR block of 115.54.4.0/22? Select
three
A. 115.54.8.32
B. 115.54.7.64
C. 115.54.6.255
D. 115.54.3.32
E. 115.54.5.128
F. 115.54.12.128
an Ethernet port on router was assigned an IP address of 172.16.112.1/20, what is
the maximum number of hosts allowed on this subnet?
A. 1024
B. 2046
C. 4094
D. 4096
E. 8190
work as network consultant. Your customer, TestKing Inc, has a class C
network license. TestKing wants you to subnet the network to provide a separate
subnet for each of its 5 departments. Each subnet must support at least 24 hosts.
Which network mask should you use?
A. 255.255.255.192
B. 255.255.255.224
C. 255.255.255.240
D. 255.255.255.248
E. 255.255.255.252
F. 255.255.255.254
TestKing trainee Bob asks you what 11111001 binary is in decimal. What
should you tell him?
A. 6
B. 193
C. 225
D. 241
E. 249
is the maximum number of IP addresses that can be assigned to hosts on a
local subnet that use the 255.255.255.224 subnet mask?
A. 14
B. 15
C. 16
D. 30
E. 31
F. 32
of the following IP addresses for the network 27.35.16.32/28 can be assigned
to hosts? (Choose three)
A. 27.35.16.32
B. 27.35.16.33
C. 27.35.16.48
D. 27.35.16.47
E. 27.35.16.45
F. 27.35.16.44
答案：
: C
Explanation:
The subnet mask 255.255.255.224 is a 27 bit mask
(11111111.11111111.11111111.11100000). It uses 3 bits from the last octet for the
network ID, leaving 5 bits for host addresses. We can calculate the number of hosts
supported by this subnet by using the 2n-2 formula where n represents the number of host
bits. In this case it will be 5. 25-2 gives us 30.
: C
Explanation:
This question is much easier then it appears when you convert it to binary and do the
Boolean operation as shown below:
IP address 201.100.5.68 = 11001001.01100100.00000101.01000100
/28 mask = 11111111.11111111.11111111.11000000
AND result = 11001001.01100100.00000101.01000000
AND in decimal= 200 . 100 . 5 . 64
: C, D, E
Explanation:
Since the subnet mask is 255.255.255.224, the number of network hosts that is available is
30. Every network boundary will be a multiple of 32. This means that every subnet will be
a multiple (0, 32, 64, 96, 128, 160, 192, 224) and the broadcast address for each of these
subnets will be one less this number (31, 63, 95, 127, 159, 191, 223). Therefore, any IP
address that does not end in one of these numbers will be a valid host IP address.
C. Valid Host in subnetwork 2 (92.11.178.64 to 92.11.178.95)
D. Valid Host in subnetwork 1 (134.178.18.32 to 134.178.18.63)
E. Valid Host in subnetwork 2 (192.168.16.64 to 192.168.16.95)
Incorrect Answers:
A. This will be the broadcast address for the 16.23.118.
32/27 network.
B. This will be the broadcast address for the 87.45.16.128/27 network
F. This will be the network address for the 217.168.166.192/27 network.
: A, C, D
Explanation:
IP address = 11001000.10001101.00011011.00000000 = 199.141.27.0
Subnet mask = 11111111.11111111.11111111.11110000 = 255.255.255.240
Subnet # = 11001000.10001101.00011011.00000000 = 199.141.27.0
Broadcast = 11001000.10001101.00011011.00001111 = 199.141.27.15
The valid IP address range = 199.141.27.1 - 199.141.27.14
5.A (AD)C 11--15.(BE)C(BCE)DB
16--20.B(BCD)(没有18题)AC 21--25.(ACF)(CE)C(BCE)C
(没有28题）D ( BEF)x00