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What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS - IS link - state databases are synchronized?（）
- A、complete SNP (CSNP)
- B、partial SNP (PSNP)
- C、database query
- D、database description packet (DDP)
- E、link - state summary
- F、hello
参考答案
更多 “What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS - IS link - state databases are synchronized?（）A、complete SNP (CSNP)B、partial SNP (PSNP)C、database queryD、database description packet (DDP)E、link - state summaryF、hello” 相关考题
考题
Click the Exhibit button.In the exhibit, what is the purpose of this OSPF configuration?()
A. The router sends the file debugOSPF (containing hellos sent and LSA updates) to the syslog server.B. The router traces both OSPF hellos sent and LSA updates, and stores the results in the debugOSPFfile.C. The router traces both OSPF hellos sent and LSA updates, and sends the results to the syslog process with the debugOSPF facility.D. The router traces all OSPF operations, stores the results in the debugOSPF file, and marks both hellos sent and LSAupdates in the file with a special flag.
考题
What happens when you issue the ping 172.19.102.2 count 5 command?()
A. ICMP echo requests are sent to 172.19.102.2 in five-millisecond intervals.B. ICMP echo requests are sent to 172.19.102.2 until five packets are dropped.C. ICMP echo requests are sent to 172.19.102.2 five times.D. ICMP echo requests are sent continuously to 172.19.102.2 for five seconds.
考题
What is used to view status messages sent to a file named "test" as they are sent?()
A.monitor start testB.show log testC.view log testD.show test realtime
考题
When you issue the logging trap informational command, what happens? ()
A. An information trap is sent to the SNMP server.B. Informational and debug messages are logged to the syslog server.C. All messages are sent to the logging host, where selections are made.D. All messages from emergencies to informational are sent to the logging host.
考题
What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS － IS link － state databases are synchronized?()
A. complete SNP (CSNP)B. partial SNP (PSNP)C. database queryD. database description packet (DDP)E. link - state summaryF. hello
考题
What is the first thing that happens when IPv6 is enabled on an interface on a host？（）A、A router solicitation is sent on that interface.B、There is a duplicate address detection on the host interface.C、The link local address is assigned on the host interface.D、A neighbor redirect message is sent on the host interface.
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What occurs on a Frame Relay network when the CIR is exceeded?（）A、All TCP traffic is marked discard eligible.B、All UDP traffic is marked discard eligible and a BECN is sent.C、All TCP traffic is marked discard eligible and a BECN is sent.D、All traffic exceeding the CIR is marked discard eligible.
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Which two statements about using the CHAP authentication mechanism in a PPP link are true?（）A、CHAP uses a two-way handshakeB、CHAP authentication periodically occurs after link establishmentC、CHAP has no protection from playback attacksD、CHAP authentication is performed only upon link establishmentE、CHAP uses a three-way handshakeF、CHAP authentication passwords are sent in plaintext
考题
As an experienced technician, you are responsible for Technical Support in your company. One of the trainees is asking you in what might happen if he issues the logging trap information command. Which of the following statement will answer his quest|on?（）A、Informational and debug messages are logged to the syslog server.B、All messages are sent to the logging host, where selections are made.C、An information trap is sent to the SNMP server.D、All messages from emergencies to informational are sent to the logging host.
考题
While you are troubleshooting network performance issues， you notice that a switch is periodically flooding all unicast traffic. Further investigation reveals that periodically the switch is also having spikes in CPU utilization， causing the MAC address table to be flushed and relearned. What is the most likely cause of this issue？（）A、a routing protocol that is flooding updatesB、a flapping port that is generating BPDUs with the TCN bit setC、STP is not running on the switchD、a user that is downloading the output of the show-tech commandE、a corrupted switch CAM table
考题
What is periodically multicasted （every 10 seconds） by the DIS on a LAN to ensure IS-IS Link StateDatabase accuracy？（）A、PSNPB、CSNPC、LSPD、IIHE、ISH
考题
When you issue the logging trap informational command, what happens? （）A、An information trap is sent to the SNMP server.B、Informational and debug messages are logged to the syslog server.C、All messages are sent to the logging host, where selections are made.D、All messages from emergencies to informational are sent to the logging host.
考题
What does a Layer 2 switch do if it receives a frame with a destination MAC address that is not found in its MAC address table?（）A、The frame is dropped.B、The frame is addressed with a broadcast MAC address and sent out all ports.C、The frame is sent out all ports except the receiving port.D、An ARP request is sent out all ports except the receiving port.E、A destination unreachable message is sent back to the source address.F、None of the above.
考题
单选题Click the Exhibit button. In the exhibit, what is the purpose of this OSPF configuration?（）A
The router sends the file debugOSPF (containing hellos sent and LSA updates) to the syslog server.B
The router traces both OSPF hellos sent and LSA updates, and stores the results in the debugOSPFfile.C
The router traces both OSPF hellos sent and LSA updates, and sends the results to the syslog process with the debugOSPF facility.D
The router traces all OSPF operations, stores the results in the debugOSPF file, and marks both hellos sent and LSAupdates in the file with a special flag.
考题
多选题Which two statements about using the CHAP authentication mechanism in a PPP link are true?（）ACHAP uses a two-way handshakeBCHAP authentication periodically occurs after link establishmentCCHAP has no protection from playback attacksDCHAP authentication is performed only upon link establishmentECHAP uses a three-way handshakeFCHAP authentication passwords are sent in plaintext
考题
单选题When you issue the logging trap informational command, what happens? （）A
An information trap is sent to the SNMP server.B
Informational and debug messages are logged to the syslog server.C
All messages are sent to the logging host, where selections are made.D
All messages from emergencies to informational are sent to the logging host.
考题
单选题What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS - IS link - state databases are synchronized?（）A
complete SNP (CSNP)B
partial SNP (PSNP)C
database queryD
database description packet (DDP)E
link - state summaryF
hello
考题
单选题What is periodically multicasted （every 10 seconds） by the DIS on a LAN to ensure IS-IS Link StateDatabase accuracy？（）A
PSNPB
CSNPC
LSPD
IIHE
ISH
考题
单选题What would NOT be a distress signal?（）A
MAYDAY sent by radiotelephoneB
Continuous sounding of fog hornC
Green star shells fired from a launcherD
Square flag and ball in a vertical line
考题
单选题What does a Layer 2 switch do if it receives a frame with a destination MAC address that is not found in its MAC address table?（）A
The frame is dropped.B
The frame is addressed with a broadcast MAC address and sent out all ports.C
The frame is sent out all ports except the receiving port.D
An ARP request is sent out all ports except the receiving port.E
A destination unreachable message is sent back to the source address.F
None of the above.
考题
单选题What is used to view status messages sent to a file named "test" as they are sent?（）A
monitor start testB
show log testC
view log testD
show test realtime
考题
多选题A network administrator enters the following command on a router: logging trap 3. What are three message types that will be sent to the Syslog server? （）AinformationalBemergencyCwarningDcriticalEdebugFerror
考题
单选题While you are troubleshooting network performance issues， you notice that a switch is periodically flooding all unicast traffic. Further investigation reveals that periodically the switch is also having spikes in CPU utilization， causing the MAC address table to be flushed and relearned. What is the most likely cause of this issue？（）A
a routing protocol that is flooding updatesB
a flapping port that is generating BPDUs with the TCN bit setC
STP is not running on the switchD
a user that is downloading the output of the show-tech commandE
a corrupted switch CAM table
考题
单选题What happens when you issue the ping 172.19.102.2 count 5 command?（）A
ICMP echo requests are sent to 172.19.102.2 in five-millisecond intervals.B
ICMP echo requests are sent to 172.19.102.2 until five packets are dropped.C
ICMP echo requests are sent to 172.19.102.2 five times.D
ICMP echo requests are sent continuously to 172.19.102.2 for five seconds.
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