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QUESTION 21
The following commands are issued on a Cisco Router:
Router(configuration)#access-list 199 permit tcp host 10.1.1.1 host 172.16.1.1
Router(configuration)#access-list 199 permit tcp host 172.16.1.1 host 10.1.1.1
Router(configuration)#exit
Router#debug ip packet 199
What will the debug output on the console show?
A. All IP packets passing through the router
B. Only IP packets with the source address of 10.1.1.1
C. All IP packets from 10.1.1.1 to 172.16.1.1
D. All IP Packets between 10.1.1.1 and 172.16.1.1
Answer: D
Explanation:
In this example, the “debug ip packet” command is tied to access list 199, specifying which IP packets should be debugged. Access list 199 contains two lines, one going from the host with IP address 10.1.1.1 to 172.16.1.1 and the other specifying all TCP packets from host 172.16.1.1 to 10.1.1.1.
QUESTION 22
What level of logging is enabled on a Router where the following logs are seen?
%LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
A. alerts
B. critical
C. errors
D. notifications
Answer: D
Explanation:
Cisco routers, switches, PIX and ASA firewalls prioritize log messages into 8 levels (0-7), as shown below:
LevelLevel NameDescription
0 Emergencies System is unusable
1 Alerts Immediate action needed
2 Critical Critical conditions
3 Errors Error conditions
4 Warnings Warning conditions
5 Notifications Informational messages
6 Informational Normal but significant conditions
7 Debugging Debugging messages
When you enable logging for a specific level, all logs of that severity and greater (numerically less) will be logged. In this case we can see that logging level of 3 (as seen by the 3 in “LINK-3-UPDOWN”) and level 5 (as seen by the 5 in “LINEPROTO-5-UPDOWN”) are shown, which means that logging level 5 must have been configured. As shown by the table, logging level 5 is Notifications.
QUESTION 23
You have the followings commands on your Cisco Router:
ip ftp username admin
ip ftp password backup
You have been asked to switch from FTP to HTTP. Which two commands will you use to replace the existing commands?
A. ip http username admin
B. ip http client username admin
C. ip http password backup
D. ip http client password backup
E. ip http server username admin
F. ip http server password backup
Answer: BD
Explanation:
Configuring the HTTP Client
Perform this task to enable the HTTP client and configure optional client characteristics. The standard HTTP 1.1 client and the secure HTTP client are always enabled. No commands exist to disable the HTTP client. For information about configuring optional characteristics for the HTTPS client, see the HTTPS-HTTP Server and Client with SSL 3.0, Release 12.2(15)T, feature module.
SUMMARY STEPS
1. enable
2. configure terminal
3. ip http client cache {ager interval minutes | memory {file file-size-limit | pool pool-size-limit}
4. ip http client connection {forceclose | idle timeout seconds | retry count | timeout seconds}
5. ip http client password password
6. ip http client proxy-server proxy-name proxy-port port-number
7. ip http client response timeout seconds
8. ip http client source-interface type number
9. ip http client username username
Reference: HTTP 1.1 Web Server and Client.
http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_http_web.html
QUESTION 24
You have 2 NTP servers in your network – 10.1.1.1 and 10.1.1.2.
You want to configure a Cisco router to use 10.1.1.2 as its NTP server before falling back to
10.1.1.1. Which commands will you use to configure the router?
A. ntp server 10.1.1.1
ntp server 10.1.1.2
B. ntp server 10.1.1.1
ntp server 10.1.1.2 primary
C. ntp server 10.1.1.1
ntp server 10.1.1.2 prefer
D. ntp server 10.1.1.1 fallback
ntp server 10.1.1.2
Answer: C
Explanation:
A router can be configured to prefer an NTP source over another. A preferred server’s responses are discarded only if they vary dramatically from the other time sources. Otherwise, the preferred server is used for synchronization without consideration of the other time sources. Preferred servers are usually specified when they are known to be extremely accurate. To specify a preferred server, use the prefer keyword appended to the ntp server command. The following example tells the router to prefer TimeServerOne over TimeServerTwo:
Router#config terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#ntp server TimeServerOne prefer
Router(config)#ntp server TimeServerTwo
Router(config)#^Z
QUESTION 25
The following command is issued on a Cisco Router:
Router(configuration)#logging console warnings
Which alerts will be seen on the console?
A. Warnings only
B. debugging, informational, notifications, warnings
C. warnings, errors, critical, alerts, emergencies
D. notifications, warnings, errors
E. warnings, errors, critical, alerts
Answer: C
Explanation:
Cisco routers prioritize log messages into 8 levels (0-7), as shown below:
LevelLevel NameDescription
0 Emergencies System is unusable
1 Alerts Immediate action needed
2 Critical Critical conditions
3 Errors Error conditions
4 Warnings Warning conditions
5 Notifications Informational messages
6 Informational Normal but significant conditions
7 Debugging Debugging messages
When you enable logging for a specific level, all logs of that severity and greater (numerically less) will be logged. In this case, when you enable console logging of warning messages (level 4), it will log levels 0-4, making the correct answer warnings, errors, critical, alerts, and emergencies.
QUESTION 26
Which two of the following options are categories of Network Maintenance tasks?
A. Firefighting
B. Interrupt-driven
C. Policy-based
D. Structured
E. Foundational
Answer: BD
Explanation:
Proactive Versus Reactive Network Maintenance:
Network maintenance tasks can be categorized as one of the following:
Structured tasks: Performed as a predefined plan.
Interrupt-driven tasks: Involve resolving issues as they are reported.
QUESTION 27
A customer network engineer has made configuration changes that have resulted in some loss of connectivity. You have been called in to evaluate a switch network and suggest resolutions to the problems.
PC2 in VLAN 200 is unable to ping the gateway address 172.16.200.1; identify the issue.
A. VTP domain name mismatch on SW4
B. VLAN 200 not configured on SW1
C. VLAN 200 not configured on SW2
D. VLAN 200 not configured on SW4
Answer: D
QUESTION 28
A customer network engineer has made configuration changes that have resulted in some loss of connectivity. You have been called in to evaluate a switch network and suggest resolutions to the problems.
Which of statement is true regarding STP issue identified with switches in the given topology?
A. Loopguard configured on the New_Switch places the ports in loop inconsistent state
B. Rootguard configured on SW1 places the ports in root inconsistent state
C. Bpduguard configured on the New_Switch places the access ports in error-disable
D. Rootguard configured on SW2 places the ports in root inconsistent state
Answer: A
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