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单选题
During an attempt to ’scp’ between two hosts， an error indicating PRNG is not seeded is displayed.What is the likely cause of the error？（）
A
The sshd user id is locked.
B
The /var/empty directory needs to be created.
C
PRNG is set to ’no’ in the /etc/ssh/sshd_config file.
D
The permissions on /dev/random and /dev/urandom are incorrect.
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更多 “单选题During an attempt to ’scp’ between two hosts， an error indicating PRNG is not seeded is displayed.What is the likely cause of the error？（）A The sshd user id is locked.B The /var/empty directory needs to be created.C PRNG is set to ’no’ in the /etc/ssh/sshd_config file.D The permissions on /dev/random and /dev/urandom are incorrect.” 相关考题
考题
On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously, resulting in a collision. Following this collision, what will the hosts do? (Select all valid answers)A. The destination host sends a request to the source for retransmission.B. The jam signal indicates that the collision has been cleared.C. The hosts will attempt to resume transmission after a time delay has expired.D. An electrical pulse indicates that the collision has cleared.E. The router on the segment will signal that the collision has cleared.F. The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.
考题
During startup, router VE1 displays the following error message:boot: cannot open "flash:"What will VE1 do next?A. It will attempt to locate the configuration file from a TFTP server. If this fails, it will initiate the setup dialog.B. It will attempt to locate the IOS from a TFTP server. If this fails, it will load a limited IOS from ROM.C. It will attempt to locate the configuration file from a TFTP server. If this fails, it will load a limited configuration from ROM.D. Because of damaged flash memory, the router will fail the POST.E. It will attempt to locate the IOS from a TFTP server. If this fails, it will initiate the setup dialog.F. None of the above
考题
What are two ways that packet fragmentation is handled differently between IPv6 and IPv4?()
A. End hosts determine the path MTU for IPv6.B. End hosts determine the path MTU for IPv4.C. Packet fragmentation occurs at intermediate nodes for IPv4.D. Packet fragmentation occurs at intermediate nodes for IPv6.
考题
During an attempt to mount filesystems on the datavg volume group, the following error message occurs: "0506-323 Cannot get information about log device loglv00." The error is due to the fact that the jfslog used by these filesystems is located on a bad disk. Which of the following procedures should be performed to fix the error?（）A.Run fsck on all filesystems using loglv00B.Run the logform command against loglv00C.Recreate the filesystems and resotre form a backupD.Create a enw jfslog and change /etc/filesystems to point to this log
考题
You attempt to upgrade a Microsoft Windows XP computer to Windows Vista.You receive an error message during the upgrade process indicating that the upgrade has failed.You need to view the details of the error message.What should you do?（）A.AB.BC.CD.D
考题
What command verifies connectivity between two hosts by sending and receiving ICMP echo messages?()
A. pingB. tracertC. netstatD. show cdp neighbors detailE. show ip routeF. traceroute
考题
During startup, the router displays the following error message: boot: cannot open "flash:" What will the router do next?（）A、Because of damaged flash memory， the router will fail the POSTB、It will attempt to locate the IOS from a TFTP server. If this fails， it will initiate the setup dialog.C、It will attempt to locate the IOS from a TFTP server. If this fails， it will load a limited IOS from ROMD、It will attempt to locate the configuration file from a TFTP server. If this fails， it will initiate the setup dialog.E、It will attempt to locate the configuration file from a TFTP server. If this fails， it will load a limited configuration from ROM
考题
During startup, the router displays the following error message: boot: cannot open "flash:" What will the router do next（）。A、Because of damaged flash memory, the router will fail the POST.B、It will attempt to locate the IOS from a TFTP server. If this fails, it will initiate the setup dialog.C、It will attempt to locate the IOS from a TFTP server. If this fails, it will load a limited IOS from ROM.D、It will attempt to locate the configuration file from a TFTP server. If this fails, it will initiate the setup dialog.E、It will attempt to locate the configuration file from a TFTP server. If this fails, it will load a limited configuration from ROM.
考题
What command verifies connectivity between two hosts by sending and receiving ICMP echo messages?（）A、pingB、tracertC、netstatD、show cdp neighbors detailE、show ip routeF、traceroute
考题
On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously,resulting in a collision. Following this collision, what will the hosts do?（）A、The destination host sends a request to the source for retransmission.B、The jam signal indicates that the collision has been cleared.C、The hosts will attempt to resume transmission after a time delay has expired.D、An electrical pulse indicates that the collision has cleared.E、The router on the segment will signal that the collision has cleared.F、The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.
考题
When one connection to a host fails in a full mesh network， which of the following is true？（）A、All hosts can communicate.B、No hosts can communicate.C、Half of the hosts will lose communication.D、Only the two hosts between the failed connection will lose communication.
考题
Which of the following are the BEST tools to test connectivity between two hosts？（）A、netstatB、nslookupC、ipconfigD、tracerouteE、pathping
考题
Which two statements are true about the relationship between static NAT and proxy ARP? （）(Choose two.)A、It is necessary to forward ARP requests to remote hosts.B、It is necessary when translated traffic belongs to the same subnet as the ingress interface.C、It is not automatic and you must configure it.D、It is enabled by default and you do not need to configure it.
考题
Workstation A has been assigned an IP address of 192.0.2.24/28. Workstation B has been assigned an IP address of 192.0.2.100/28. The two workstations are connected with a straight-through cable. Attempts to ping between the hosts are unsuccessful. What two things can be done to allow communications between the hosts? （）A、Replace the straight-through cable with a crossover cable.B、Change the subnet mask of the hosts to /25.C、Change the subnet mask of the hosts to /26.D、Change the address of Workstation A to 192.0.2.15.E、Change the address of Workstation B to 192.0.2.111.
考题
What is the purpose of assigning an IP address to a switch?（）A、Provides local hosts with a default gateway addressB、Allows remote management of the switch.C、Allows the switch to respond to ARP requests between two hostsD、Ensures that hosts on the same LAN can communicate with each other.
考题
Which of the following commands verifies connectivity between two hosts?（）A、chkntfsB、dxdiagC、tracertD、ipconfigE、ping
考题
During an attempt to 'scp' between two hosts, an error indicating PRNG is not seeded is displayed. What is the likely cause of the error?（）A、The sshd user id is locked.B、The /var/empty directory needs to be created.C、PRNG is set to 'no' in the /etc/ssh/sshd_config file.D、The permissions on /dev/random and /dev/urandom are incorrect.
考题
During implementation of a two-node cluster，it is determined that error notification for the shared Disk subsystem would be beneficial. Which of the following is a pre-requisite for implementing automatic error notification？（） A、 The cluster must not be running.B、 The cluster.es.server.utils lpp must be installed.C、 The error notification module must be enabled in RSCT.D、 The permissions on /tmp/hacmp.out need to be changed to 774.
考题
During an attempt to mount filesystems on the datavg volume grou, the following error message occurs: "0506-323 Cannot get information about log device loglv00." The error is due to the fjslog used by these filesystems is located on a bad disk.Which of the following procedures should be performed to fix the error?（）A、Run fsck on all filesystems using loglv00B、Run the logform command against loglv00C、Recreate the filesystems and restore from a backupD、Create a new jfslog and change /etc/filesystems to point to this log
考题
What are two ways that packet fragmentation is handled differently between IPv6 and IPv4?（）A、End hosts determine the path MTU for IPv6.B、End hosts determine the path MTU for IPv4.C、Packet fragmentation occurs at intermediate nodes for IPv4.D、Packet fragmentation occurs at intermediate nodes for IPv6.
考题
单选题During startup, the router displays the following error message: boot: cannot open "flash:" What will the router do next（）。A
Because of damaged flash memory, the router will fail the POST.B
It will attempt to locate the IOS from a TFTP server. If this fails, it will initiate the setup dialog.C
It will attempt to locate the IOS from a TFTP server. If this fails, it will load a limited IOS from ROM.D
It will attempt to locate the configuration file from a TFTP server. If this fails, it will initiate the setup dialog.E
It will attempt to locate the configuration file from a TFTP server. If this fails, it will load a limited configuration from ROM.
考题
单选题What command verifies connectivity between two hosts by sending and receiving ICMP echo messages?（）A
pingB
tracertC
netstatD
show cdp neighbors detailE
show ip routeF
traceroute
考题
多选题Which of the following commands verifies connectivity between two hosts?（）AchkntfsBdxdiagCtracertDipconfigEping
考题
多选题Workstation A has been assigned an IP address of 192.0.2.24/28.Workstation B has been assigned an IP address of 192.0.2.100/28.The two workstations are connected with a straight-through cable.Attempts to ping between the hosts are unsuccessful. What two things can be done to allow communications between the hosts？ （）AReplace the straight-through cable with a crossover cableBChange the subnet mask of the hosts to /25CChange the subnet mask of the hosts to /26DChange the address of Workstation A to 192.0.2.15EChange the address of Workstation B to 192.0.2.111
考题
单选题When one connection to a host fails in a full mesh network， which of the following is true？（）A
All hosts can communicate.B
No hosts can communicate.C
Half of the hosts will lose communication.D
Only the two hosts between the failed connection will lose communication.
考题
单选题On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously,resulting in a collision. Following this collision, what will the hosts do?（）A
The destination host sends a request to the source for retransmission.B
The jam signal indicates that the collision has been cleared.C
The hosts will attempt to resume transmission after a time delay has expired.D
An electrical pulse indicates that the collision has cleared.E
The router on the segment will signal that the collision has cleared.F
The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.
考题
单选题What will be the result of the following configuration？（） Log_archive_dest_1=location=c：/oracle/arch/mydb Log_archive_dest_2=location=z：/oracle/arch/mydbA
An error will occur during database startup because the second parameter is not valid.B
An error will occur during database startup since you are trying to create archived redo logs in two different locations.C
Archived redo logs will be created in two different locations by the ARCH process.D
Archived redo logs will be created in two different locations by the LGWR process.E
Neither parameter setting is valid， so the database will not start up.
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