Free Cisco 640-875 Exam Dumps Questions & Answers

Which statement about how data is transmitted in a GPON environment is true?

• A.  The OLT sends traffic to specific ONTs based on an assigned timeslot
• B.  Optical splitters are used to separate wavelengths assigned to different ONTs
• C.  Each ONT receives the traffic intended for all ONTs on the same PON
• D.  Nodes provide optical to electrical conversion between the OLT and the ONTs

A network administrator set-up AAA on a new router. While the TACACS server was down for maintenance, the administrator was still unable to login with the backup password. Which keyword did the administrator leave off of the AAA configuration?

• A.  The command line privilege level 0 is missing from the VTY configuration.
• B.  The keyword local is missing from the AAA authentication login statement.
• C.  The keyword local is missing from the AAA authentication exec statement.
• D.  The keyword default is missing from the login authentication.

You install third-party monitoring software on a server that has an IP address of 10.10.1.3. The monitoring software supports SNMPv1 and SNMPv2. You want to configure a router to allow SNMP access from the monitoring software by using the community string of Community1. The configuration must be as secure as possible. Which commands should you use?

• A.  snmp-server host 10.10.1.3
  snmp-server community Community1 RO
• B.  access-list 10 permit 10.10.1.3
  snmp-server community Community1 RO
• C.  access-list 10 permit 10.10.1.3
  snmp-server community Community1 RO 10
• D.  snmp-server host 10.10.1.3
  snmp-server community Community1 RW 10

Which three statements about Ethernet frames are true? (Choose three.)

• A.  The dot1q tag size is six bytes.
• B.  The source and destination IP addresses are in the header.
• C.  Every frame starts with a preamble.
• D.  FCS is used to recover single-bit errors.
• E.  If the data field is too short, it must be padded.
• F.  The source address is positioned behind the destination address.

Drag each Cisco IOS XR command from the left and drop it on the correct output description on the right.

Correct Answer:

Explanation