Cisco ENCOR IP Services and QoS 2

Question 1

What is the purpose of the DHCP Option 82 (Relay Agent Information)?

Accepted Answer

Insert client location information to help assign IP addresses based on port or VLAN

Answer

Specify the DNS server address

Answer

Authenticate DHCP clients

Answer

Enable DHCP failover

Question 2

In SNMPv3, which security level provides both authentication and encryption?

Accepted Answer

authPriv

Answer

noAuthNoPriv

Answer

authNoPriv

Answer

readOnly

Question 3

What is the function of IP SLA in Cisco IOS?

Accepted Answer

Proactively measure network performance metrics like latency, jitter, and packet loss

Answer

Shape outbound traffic

Answer

Assign DSCP markings

Answer

Configure QoS policies

Question 4

Which QoS mechanism discards excess traffic above a defined rate without buffering it?

Accepted Answer

Policing

Answer

Shaping

Answer

WRED

Answer

Scheduling

Question 5

What is the default behavior of NTP authentication when configured with 'ntp authenticate' but no trusted keys?

Accepted Answer

NTP synchronization is blocked because no keys are trusted

Answer

All NTP peers are trusted

Answer

Authentication is disabled

Answer

Only Stratum 1 servers are trusted

Question 6

Which mechanism does WRED use to proactively drop packets before a queue fills completely?

Accepted Answer

Random early detection based on average queue depth and DSCP/IP Precedence

Answer

Tail drop at 100% queue depth

Answer

Priority inversion

Answer

Strict scheduling