单选题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 addressB 128 

题目
单选题
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

相似考题

1.A user is unable to reach the Internet. The technician asks the user to do an IPCONFIG /all. The userreports that their IP address is 172.16.1.18, subnet mask is 255.255.255.0, and their default gateway is 172.16.1.18. Which of the following is the cause of the problem?（）A. Default gatewayB. Network cableC. Subnet maskD. CNAME record

2.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:192.168.20.9B. IP address:192.168.20.254 Subnet Mask:255.255.255.0 Default Gateway:192.168.20.1C. IP address:192.168.20.30 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.25D. IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.17E. IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.25

3.A technician is troubleshooting a network connectivity issue on a MFD and would like to eliminate the possibility of another device on the network having the same IP address. The technician should：（）A、disconnect the MFD and ping the IP address.B、disconnect the MFD and ping the subnet mask.C、disconnect the MFD and ping the loopback address.D、run the ipconfig command from the command prompt.

4.In which of the following scenarios would the "show cdp neighbors detail"command be an appropriate troubleshooting tool?()A. Two switches are connected via a trunk. Both switches have been assigned an IP address, subnet mask, and default gateway. A ping is successful between the two switches. However, VLAN information is not passed from one switch to the other switch.B. A router and a switch have been assigned an IP address, a subnet mask, and a default gateway. They are directly connected, but a ping between the two devices fails.C. A router connects to another router through a serial interface. Both routers have been assigned an IP address, subnet mask, and default gateway. The routers are running RIP and the networks directly connected to the first router do not pass to the second router. However, a ping from one router to the serial interface of the directly connected neighboring router is successful.D. A router connects to another router via a switch. Both routers and the switch have been assigned an IP address, subnet mask, and default gateway. Neither the routers nor the switch are able to ping one of the hosts that is directly to the switch.

参考答案和解析
正确答案： C
解析： 暂无解析
更多“单选题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 addressB 128 ”相关问题

  • 第1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

    正确答案:C

  • 第2题：

    Multiple users are trying to telnet to the AIX server. They are able to ping the server successfully， but are getting the following error message：  telnet： connect： A remote host refused an attempted connect operation   Which of the following could be the cause of this problem？（）

    • A、The routing table on the AIX server is incorrect.
    • B、The IP address on the network adapter is incorrect.
    • C、The portmap daemon is not running on the AIX server.
    • D、The inetd daemon is not running on the AIX server.

    正确答案:D

  • 第3题：

    On a Windows network, users are reporting that they cannot access any network resources. The users can ping the IP address and connect to the network resource using the IP address. Which of the following is the cause of the problem?（）

    • A、The file server is offline.
    • B、The DNS server is not resolving correctly.
    • C、The DHCP server is not assigning correct IP addresses.
    • D、The domain controller is not responding.

    正确答案:B

  • 第4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

    正确答案:C

  • 第5题：

    Multiple users are trying to telnet to the AIX server. They are able to ping the server successfully， but are  getting  the  following  error  message：  telnet：  connect：  A remote  host  refused  an  attempted  connect   operation Which of the following options could be the cause of this problem（）

    • A、The routing table on the AIX server is incorrect.
    • B、The IP address in the /etc/hosts file is incorrect，
    • C、The portmap daemon is not running on the AIX server.
    • D、The inetd daemon is not running on the AIX server.

    正确答案:D

  • 第6题：

    单选题
    Multiple users are trying to telnet to the AIX server. They are able to ping the server successfully， but are getting the following error message：  telnet： connect： A remote host refused an attempted connect operation   Which of the following could be the cause of this problem？（）
    A

    The routing table on the AIX server is incorrect.

    B

    The IP address on the network adapter is incorrect.

    C

    The portmap daemon is not running on the AIX server.

    D

    The inetd daemon is not running on the AIX server.


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    A technician is troubleshooting a network connectivity issue on a MFD and would like to eliminate the possibility of another device on the network having the same IP address. The technician should：（）
    A

    disconnect the MFD and ping the IP address.

    B

    disconnect the MFD and ping the subnet mask.

    C

    disconnect the MFD and ping the loopback address.

    D

    run the ipconfig command from the command prompt.


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    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


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    In which of the following scenarios would the "show cdp neighbors detail"command be an appropriate troubleshooting tool?（）
    A

    Two switches are connected via a trunk. Both switches have been assigned an IP address, subnet mask, and default gateway. A ping is successful between the two switches. However, VLAN information is not passed from one switch to the other switch.

    B

    A router and a switch have been assigned an IP address, a subnet mask, and a default gateway. They are directly connected, but a ping between the two devices fails.

    C

    A router connects to another router through a serial interface. Both routers have been assigned an IP address, subnet mask, and default gateway. The routers are running RIP and the networks directly connected to the first router do not pass to the second router. However, a ping from one router to the serial interface of the directly connected neighboring router is successful.

    D

    A router connects to another router via a switch. Both routers and the switch have been assigned an IP address, subnet mask, and default gateway. Neither the routers nor the switch are able to ping one of the hosts that is directly to the switch.


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    Multiple users are trying to telnet to the AIX server. They are able to ping the server successfully， but are  getting  the  following  error  message：  telnet：  connect：  A remote  host  refused  an  attempted  connect   operation Which of the following options could be the cause of this problem（）
    A

    The routing table on the AIX server is incorrect.

    B

    The IP address in the /etc/hosts file is incorrect，

    C

    The portmap daemon is not running on the AIX server.

    D

    The inetd daemon is not running on the AIX server.


    正确答案： C
    解析： 暂无解析

  • 第11题：

    多选题
    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.


    正确答案： C,D
    解析： 暂无解析

  • 第12题：

    单选题
    On a Windows network, users are reporting that they cannot access any network resources. The users can ping the IP address and connect to the network resource using the IP address. Which of the following is the cause of the problem?（）
    A

    The file server is offline.

    B

    The DNS server is not resolving correctly.

    C

    The DHCP server is not assigning correct IP addresses.

    D

    The domain controller is not responding.


    正确答案： D
    解析： 暂无解析

  • 第13题：

    A Network Engineer is reporting that one of the AIX hosts is generating too much ICMP traffic, which is slowing the network.  Which of the following options is the most probable cause?（）

    • A、A large FTP job is in process. 
    • B、A network interface was misconfigured. 
    • C、The ping command is being used excessively. 
    • D、A bad network interface card and/or network cable is in use. 

    正确答案:C

  • 第14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

    正确答案:C

  • 第15题：

    An administrator is trying to connect to an RSA-II adapter using the default IP address found in the installation manual of 192.168.70.125.  The Web browser returns a "page cannot be displayed" message， and a ping returns a "request timed out" message.  Which of the following is the most likely cause of the problem？（）

    • A、The RSA II adapter has obtained a DHCP assigned address.
    • B、The RSA II adapter requires independent power to function.
    • C、The Class C IP address space is not being bridged on the network.
    • D、The RSA II adapter needs to be configured using a serial connection.

    正确答案:A

  • 第16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.

    正确答案:C,D

  • 第17题：

    A user is unable to reach the Internet. The technician asks the user to do an IPCONFIG /all. The userreports that their IP address is 172.16.1.18, subnet mask is 255.255.255.0, and their default gateway is 172.16.1.18. Which of the following is the cause of the problem?（）

    • A、Default gateway
    • B、Network cable
    • C、Subnet mask
    • D、CNAME record

    正确答案:A

  • 第18题：

    单选题
    After updating serverB’s network configurations， an administrator notices that serverA， which resides in a different subnet， is unable to communicate with serverB via ssh or telnet. As ping’s to the server fail， the administrator logs onto serverB via a console and finds an available interface en0 in the ’up’ state. From the console connection， en0 can communicate with other servers in the same subnet. What is the most likely cause of the problem？（）
    A

    en0 has no associated ip address.

    B

    serverB is missing its default route.

    C

    serverB and serverA cannot connect due to a firewall.

    D

    en0 has been set up to block traffic from servers that are in different subnets.


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    An administrator is trying to connect to an RSA-II adapter using the default IP address found in the installation manual of 192.168.70.125.  The Web browser returns a "page cannot be displayed" message， and a ping returns a "request timed out" message.  Which of the following is the most likely cause of the problem？（）
    A

    The RSA II adapter has obtained a DHCP assigned address.

    B

    The RSA II adapter requires independent power to function.

    C

    The Class C IP address space is not being bridged on the network.

    D

    The RSA II adapter needs to be configured using a serial connection.


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    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


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    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


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    A Network Engineer is reporting that one of the AIX hosts is generating too much ICMP traffic, which is slowing the network.  Which of the following options is the most probable cause?（）
    A

    A large FTP job is in process. 

    B

    A network interface was misconfigured. 

    C

    The ping command is being used excessively. 

    D

    A bad network interface card and/or network cable is in use. 


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    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


    正确答案： C
    解析： 暂无解析

  • 第24题：

    多选题
    Your 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?（）
    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


    正确答案： B,C
    解析： 暂无解析

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