CIT "Connecting Networks" - Can you help me with these, please?!

1. Which QoS marking can be used by QoS-enabled network devices to provide preferential traffic treatment?

CoS

DSCP

IP precendence

2. How can you protect against MAC and IP address spoofing?

by disabling DTP negotiations on nontrunking ports

by implementing port security

by the application of the ip verify source command to untrusted ports

3. What remote access method requires both a username and password, both of which are encrypted during transmission?

SSH

802.1x

applying an ACL on all VTY lines

4. Why is it important in a converged network that combines voice, video, and data communications to use QoS?

Data communications must be given the first priority

Data communications are sensitive to jitter

Voice and video communications are more sensitive to latency

5. What is a SNMP GET request?

unsolicited messages that are sent by the SNMP agent and alert the NMS to a condition on the network

messages that are used by the NMS to change configuration variables in the agent device

messages that are used by the NMS to query the device for data

6. When data is sent, packets are sent in a continuous stream and are spaced evenly apart. Because of network congestion, the delay between each packet can vary instead of remaining constant. This variation is called_________________.

buffering

queuing

jitter

7. Which SNMP message type is matched with its proper role?

SET request contains the value of the requested variable

GET response- retrieves the value of a specific MIB variable

Trap- transmits an unsolicited alarm condition immediately after the event occurs