单选题The 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 hostsB 64 networks and 4 hostsC 2 networks and 62 hostsD 62 networks and 2 hostsE 6 network and 30 h

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单选题

The 201.145.32.0 network is subnetted using a /26 mask. How many networks and IP hosts per network exists using this subnet mask?（）

4 networks with 64 hosts

64 networks and 4 hosts

2 networks and 62 hosts

62 networks and 2 hosts

6 network and 30 hosts

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第1题：

The 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

正确答案：A
解析：Explanation:Asubnetwith24bitsonwouldbe255.255.255.0.SincethisisaclassCnetwork,thissubnetcanhaveonly1networkand254usablehosts.

第2题：

You are the network administrator at TestKing. TestKing has been assigned the class C IP address 189.66.1.0 by its Internet Service Provider. If you divide the network range by using the 255.255.255.224 subnet mask, how many hosts can be supported on each network?（）

A.14

B.16

C.30

D.32

E.62

F.64

参考答案：C

第3题：

The 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 and 64 hosts

B．64 networks and 4 hosts

C．4 networks and 62 hosts

D．62 networks and 2 hosts

E．6 network and 30 hosts

正确答案：C
解析：Explanation:
A class C network with a 26 bit mask requires 2 bits for the network address, leaving 6 bits for host addresses. Using the 2n-2 formula (22 for the network and 26-2for hosts) we have 4 network addresses and 62 host addresses.

Incorrect Answers:
A, B: This is not a possible combination. No network mask will provide for 64 usable hosts, because we must always subtract 2 for the network and broadcast address.
D. This would be the result of a /30 mask.
E. This would be the result of a /27 network mask.

第4题：

The TestKing network is subnetted using 29 bits for the subnet mask. Which wild card mask should be used to configure an extended access list to permit or deny access to an entire subnetwork?（）

A、255.255.255.224
B、255.255.255.248
C、0.0.0.224
D、0.0.0.8
E、0.0.0.7
F、0.0.0.3

正确答案:E

第5题：

The 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

正确答案:C

第6题：

How many usable sub network and usable hosts per subnet result in the network address 201.105.13.0 is sub netted with a mask of ／26? ()

A. 64 network and 4 hosts

B. 4 network and 64 hosts

C. 2 network and 62 hosts

D. 62 network and 2 hosts

参考答案：C

第7题：

Which subnet mask would be appropriate for a network address range to be subnetted for up to eight LANs, with each LAN containing 5 to 26 hosts?()

A.0.0.0.240

B.255.255.255.252

C.255.255.255.0

D.255.255.255.224

E.255.255.255.240

参考答案：D

第8题：

The 213.115.77.0 network was subnetted using a /28 subnet mask. How many usable subnets and host addresses per subnet were created as a result of this?

A. 2 networks with 62 hosts

B. 6 networks with 30 hosts

C. 16 networks and 16 hosts

D. 62 networks and 2 hosts

E. 14 networks and 14 hosts

F. None of the above

正确答案：F
F 解析：Explanation:
A class C subnet with a 28 bit mask requires 4 bits for the network address, leaving 4 bits for host addresses. Using the 2n-2 formula (24-2 in this case) we have 14 host addresses and 16 network addresses.

Incorrect Answers:
A. This would be the result of a /26 network mask
B. This would be the result of a /27 network mask
C. Remember we need to always subtract two for the network and broadcast addresses, so this answer is incorrect.
D. This would be the result of a /30 network mask.

第9题：

A、14
B、16
C、30
D、32
E、62
F、64

正确答案:C

第10题：

When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?（）

A、by snooping the CoS marking on the incoming frames
B、by using RTP hello messages between the switch port and the Cisco IP Phone
C、by using CDP
D、by using DHCP snooping
E、by snooping the incoming 802.1Q VLAN tag

正确答案:C

The 201.145.32.0 network is subnetted using a /26 mask. How

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