300-410 IP SLA Practice Test 4 — 15 Questions

Question 1

A network engineer runs the following command to troubleshoot an IP SLA issue:

R1# show ip sla application

IP Service Level Agreements
Version: 2.0

IP SLAs Responder: Disabled
   IP SLAs Low Memory: Disabled
   IP SLAs ICMP Echo: Enabled
   IP SLAs ICMP Jitter: Enabled
   IP SLAs HTTP: Disabled
   IP SLAs FTP: Disabled
   IP SLAs UDP Jitter: Enabled
   IP SLAs TCP Connect: Enabled
   IP SLAs DNS: Disabled
   IP SLAs DHCP: Disabled
   IP SLAs DLSw: Disabled
   IP SLAs VoIP: Disabled
   IP SLAs Metro Ethernet: Disabled
   IP SLAs Video: Disabled
   IP SLAs LSP: Disabled
   IP SLAs LSP Group: Disabled
   IP SLAs VPLS: Disabled
   IP SLAs MPLS: Disabled
   IP SLAs MPLS Group: Disabled
   IP SLAs LDP: Disabled
   IP SLAs LDP Group: Disabled
   IP SLAs BFD: Disabled

What does this output indicate?

Accepted Answer

The device supports ICMP Echo, ICMP Jitter, UDP Jitter, and TCP Connect probes.. This output shows the IP SLA capabilities enabled on the device. ICMP Echo, ICMP Jitter, UDP Jitter, and TCP Connect are enabled; others are disabled. The responder is also disabled.

Answer

The IP SLA responder is enabled, allowing the device to respond to probes.

Answer

All IP SLA operations are disabled on this device.

Answer

The device is running low on memory and cannot support IP SLA.

Question 2

A network engineer runs the following command to troubleshoot an IP SLA issue:

R1# show ip sla monitor statistics 10

Round Trip Time (RTT) for Index 10
   Latest RTT: 12 ms
   Latest RTT (milliseconds): 12
   Latest RTT (microseconds): 12000
   Last operation start time: 12:34:56.789 UTC Mon Mar 1 2021
   Last operation return code: OK
   Number of successes: 100
   Number of failures: 0
   Operation time to live: Forever

What does this output indicate?

Accepted Answer

The IP SLA monitor operation is functioning correctly with no failures.. This output is from the older 'ip sla monitor' command, which is equivalent to 'ip sla'. It shows the same statistics: 100 successes, 0 failures, and a return code of OK, indicating the probe is working.

Answer

The IP SLA monitor operation has failed because the return code is 'OK'.

Answer

The IP SLA monitor operation is not configured for index 10.

Answer

The IP SLA monitor operation has a timeout of 12 ms.

Question 3

A network engineer runs the following command to troubleshoot an IP SLA issue:

R1# show ip sla monitor configuration 10

IP SLAs Monitor, Infrastructure Engine-II.
Entry number: 10
Owner: 
Tag: 
Type of operation to perform: icmp-echo
Target address: 192.168.1.1
Type Of Service parameter: 0x0
Request size (ARR data portion): 28
Operation timeout (milliseconds): 5000
Frequency (seconds): 60
Next Scheduled Start Time: Start Time already occurred
Group Scheduled : FALSE
Life (seconds): Forever
Entry Ageout (seconds): never
Recurring (Starting Everyday): FALSE
Status of entry (SNMP RowStatus): Active
Threshold (milliseconds): 5000
Distribution Statistics:
   Number of history intervals kept: 0
   Number of history buckets kept: 15
   History Statistics:
      Number of history Lives kept: 0

What does this output indicate?

Accepted Answer

The IP SLA monitor operation is configured as an ICMP echo probe with a 60-second frequency and 5-second timeout.. This is the older 'ip sla monitor' configuration output, identical to 'ip sla configuration'. It shows an ICMP echo probe to 192.168.1.1, active status, 60-second frequency, and 5-second timeout.

Answer

The IP SLA monitor operation is configured as a UDP jitter probe to 192.168.1.1.

Answer

The IP SLA monitor operation has a frequency of 5 seconds and a timeout of 60 seconds.

Answer

The IP SLA monitor operation is in a 'Pending' state.

Question 4

A network engineer runs the following command to troubleshoot an IP SLA issue:

R1# debug ip sla monitor trace

IP SLAs Monitor trace debugging is on

*Mar  1 12:34:56.789: IP SLAs Monitor: Starting operation 10
*Mar  1 12:34:56.789: IP SLAs Monitor: Sending ICMP echo request to 192.168.1.1
*Mar  1 12:34:56.790: IP SLAs Monitor: Received ICMP echo reply from 192.168.1.1
*Mar  1 12:34:56.790: IP SLAs Monitor: RTT = 12 ms
*Mar  1 12:34:56.790: IP SLAs Monitor: Operation 10 completed successfully
*Mar  1 12:35:56.789: IP SLAs Monitor: Starting operation 10
*Mar  1 12:35:56.789: IP SLAs Monitor: Sending ICMP echo request to 192.168.1.1
*Mar  1 12:35:56.790: IP SLAs Monitor: Received ICMP echo reply from 192.168.1.1
*Mar  1 12:35:56.790: IP SLAs Monitor: RTT = 14 ms
*Mar  1 12:35:56.790: IP SLAs Monitor: Operation 10 completed successfully

What does this output indicate?

Accepted Answer

The IP SLA monitor operation is successfully sending and receiving ICMP echo probes.. This debug output shows the IP SLA monitor trace for operation 10. Each cycle shows a successful ICMP echo request/reply with RTT values, indicating the probe is working correctly.

Answer

The IP SLA monitor operation is failing because the RTT values are increasing.

Answer

The IP SLA monitor operation is not configured because no configuration is shown.

Answer

The IP SLA monitor operation is timing out because no reply is received.

Question 5

A network engineer runs the following command to troubleshoot an IP SLA issue:

R1# debug ip sla trace

IP SLAs trace debugging is on

*Mar  1 12:34:56.789: IP SLAs: Starting operation 10
*Mar  1 12:34:56.789: IP SLAs: Sending ICMP echo request to 192.168.1.1
*Mar  1 12:34:56.790: IP SLAs: Received ICMP echo reply from 192.168.1.1
*Mar  1 12:34:56.790: IP SLAs: RTT = 12 ms
*Mar  1 12:34:56.790: IP SLAs: Operation 10 completed successfully
*Mar  1 12:35:56.789: IP SLAs: Starting operation 10
*Mar  1 12:35:56.789: IP SLAs: Sending ICMP echo request to 192.168.1.1
*Mar  1 12:35:56.790: IP SLAs: Received ICMP echo reply from 192.168.1.1
*Mar  1 12:35:56.790: IP SLAs: RTT = 14 ms
*Mar  1 12:35:56.790: IP SLAs: Operation 10 completed successfully

What does this output indicate?

Accepted Answer

The IP SLA operation is successfully completing each probe cycle.. This debug output shows the IP SLA trace for operation 10 (newer command). It confirms successful ICMP echo probes with RTT values, indicating the operation is functioning correctly.

Answer

The IP SLA operation is failing because the RTT values are too high.

Answer

The IP SLA operation is not configured because no configuration is shown.

Answer

The IP SLA operation is timing out because no reply is received.

Question 6

What is the default frequency (in seconds) for an IP SLA operation when no frequency is explicitly configured?

Accepted Answer

60 seconds. The default frequency for an IP SLA operation is 60 seconds. This means the probe is sent every 60 seconds unless a different frequency is configured under the IP SLA configuration.

Answer

10 seconds

Answer

30 seconds

Answer

120 seconds

Question 7

Which IP SLA operation type uses ICMP Echo Request/Reply packets to measure round-trip time?

Accepted Answer

ICMP Echo. The IP SLA ICMP Echo operation (type 1) uses ICMP Echo Request and Echo Reply messages to measure network latency and availability.

Answer

UDP Jitter

Answer

TCP Connect

Answer

HTTP

Question 8

What is the default timeout value (in milliseconds) for an IP SLA operation?

Accepted Answer

5000 ms. The default timeout for an IP SLA operation is 5000 milliseconds (5 seconds). If a response is not received within this time, the probe is considered failed.

Answer

1000 ms

Answer

10000 ms

Answer

60000 ms

Question 9

Which IP SLA operation type is specifically designed to measure one-way delay, jitter, and packet loss using UDP packets with sequence numbers and timestamps?

Accepted Answer

UDP Jitter. The UDP Jitter operation (type 3) sends UDP packets with embedded sequence numbers and timestamps to measure one-way delay, jitter, and packet loss between source and destination.

Answer

UDP Echo

Answer

ICMP Path Echo

Answer

TCP Connect

Question 10

What is the default threshold value (in milliseconds) for an IP SLA operation?

Accepted Answer

5000 ms. The default threshold for an IP SLA operation is 5000 milliseconds (5 seconds). This is the value above which the operation is considered to have exceeded a tolerable delay, triggering reaction conditions.

Answer

1000 ms

Answer

10000 ms

Answer

No default threshold

Question 11

Which IP SLA operation type is used to monitor the availability of a TCP-based service by attempting a three-way handshake?

Accepted Answer

TCP Connect. The TCP Connect operation (type 5) attempts to establish a TCP connection to a specified port. Success indicates the service is reachable; failure indicates a problem.

Answer

UDP Jitter

Answer

ICMP Echo

Answer

HTTP

Question 12

What is the default number of packets sent per IP SLA UDP Jitter operation?

Accepted Answer

10. The default number of packets per UDP Jitter operation is 10. This is the number of UDP packets sent in each probe interval to measure jitter and packet loss.

Answer

1

Answer

20

Answer

100

Question 13

Which IP SLA operation type uses ICMP to discover the path (hops) between source and destination?

Accepted Answer

ICMP Path Echo. The ICMP Path Echo operation (type 10) uses ICMP Echo requests with increasing TTL values to trace the path from source to destination, similar to traceroute.

Answer

ICMP Echo

Answer

UDP Jitter

Answer

TCP Connect

Question 14

What is the default inter-packet interval (in milliseconds) for an IP SLA UDP Jitter operation?

Accepted Answer

20 ms. The default inter-packet interval for UDP Jitter is 20 milliseconds. This is the delay between sending successive packets within a single probe.

Answer

10 ms

Answer

50 ms

Answer

100 ms

Question 15

Drag and drop the steps to configure and schedule an IP SLA ICMP-echo operation into the correct order, from first to last.

Accepted Answer

Enter IP SLA configuration mode using 'ip sla 1'. The correct order begins by entering IP SLA configuration mode, then defining the ICMP-echo operation with target and source, setting optional parameters like frequency, scheduling the operation to start immediately or at a specific time, and finally verifying the configuration with show commands.