Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0, what is the correct network addres?()A.172.16.16.0B.172.16.24.0C.172.16.0.0D.172.16.28.0

第1题：

Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0， what is the correct networkaddres？（）

• A、172.16.16.0
• B、176.24.0.0
• C、172.16.0.0
• D、172.16.28.0

第2题：

The network 172.12.0.0 needs to be divided into subnets where each subnet has the capacity of 458 IP addresses.What would be the correct subnet mask to accomplish this division keeping the number of subnets at the maximum? （）

• A、255.255.254.0
• B、255.255.254.1
• C、255.255.254.2
• D、255.255.254.3

第3题：

A network administrator provides an IP address of 128.135.0.142 and a subnet mask of 255.0.0.0.  Once a ping is attempted， it fails.  Which of the following options is the most probable cause of the failed ping？（）

• A、0 is not valid in an IP address
• B、128 is a reserved network
• C、The subnet mask should be 255.255.0.0. since it is a class B
• D、A network problem has occurred since IP and subnet are valid

第4题：

Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0, what is the correct network addres?（）

• A、172.16.16.0
• B、172.16.24.0
• C、172.16.0.0
• D、172.16.28.0

第5题：

The router address 192.168.1.250 is the default gateway for both the Web Server 2 and Host 1. What is the correct subnet mask for this network（）。

• A、255.255.255.0
• B、255.255.255.192
• C、255.255.255.250
• D、255.255.255.252

第6题：

Which two statements are true of a network mask?（）

• A、A subnet mask specifies the portion of an IP address that is in a binary format
• B、A subnet mask specifies the portion of an IP address that is in a decimal format
• C、A subnet mask specifies the portion of an IP address that represents a network prefix
• D、A subnet mask specifies the portion of an IP address that represetns network hosts

第7题：

A class B network 129.35 has 10 subnets. Which of the following options is the correct subnet mask？（）

• A、255.255.128.0 （11111111.11111111.10000000.00000000）
• B、255.255.192.0 （11111111.11111111.11000000.00000000）
• C、255.255.224.0 （11111111.11111111.11100000.00000000）
• D、255.255.240.0 （11111111.11111111.11110000.00000000）

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第13题：

A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（）

• A、255.255.240.0
• B、255.255.248.0
• C、255.255.252.0
• D、255.255.254.0
• E、255.255.255.0
• F、255.255.255.192

第14题：

An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?（）

• A、IP address:192.168.20.14 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.9
• B、IP address:192.168.20.254 Subnet Mask:255.255.255.0 Default Gateway:192.168.20.1
• C、IP address:192.168.20.30 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.25
• D、IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.17
• E、IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.25

第15题：

Node ’A’ and ’B’ have two network adapters connected to different networks. Adapter 1 is assigned the address 192.168.0.10 with a subnet mask of 255.255.255.0. Adapter 2 is assigned the address 24.76.1.200 with a subnet mask of 255.255.240.0.  What is the minimum number of additional adapters per node required to eliminate a network adapter as a single point of failure？（）  

• A、 One adapter per node
• B、 Two adapters per node
• C、 Four adapters per node
• D、 No additional adapters per node

第16题：

You are a systems administrator and you are about to assign static IP addresses to various servers on your network. For the network 192.168.20.24/29 the router is assigned to the first usable host address, while the last usable host address goes to your Sales server. Which one of the following commands would you enter into the IP properties box of the sales server?（）

• A、IP address: 192.168.20.14 Subnet Mask: 255.255.255.248 Default Gateway:192.168.20.9
• B、IP address: 192.168.20.254 Subnet Mask: 255.255.255.0 Default Gateway:192.168.20.1
• C、IP address: 192.168.20.30 Subnet Mask 255.255.255.248 Default Gateway:192.168.20.25
• D、IP address: 192.168.20.30 Subnet Mask 255.255.255.240 Default Gateway:192.168.20.17
• E、IP address: 192.168.20.30 Subnet Mask 255.255.255.240 Default Gateway:192.168.20.25

第17题：

Which two statements are true of a network mask?（）

• A、A subnet mask specifies the portion of an IP address that is in a binary format.
• B、A subnet mask specifies the portion of an IP address that is in a decimal format.
• C、A subnet mask specifies the portion of an IP address that represents a network prefix.
• D、A subnet mask specifies the portion of an IP address that represents network hosts.

第18题：

Given the host IP address of 192.168.100.60 and a network mask of 255.255.255.224 (or /27), which address represents the correct network address for the referenced host?（）

• A、192.168.100.48
• B、192.168.100.16
• C、192.168.100.0
• D、192.168.100.32

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