Cisco CCIE Service Provider Cable Recertification Set 5

The "show controllers cable x/y upstreram x" command does not detect impulse noise because:

When doing a show cable modem it is observed that a few modems are displaying the online(d) state. Users are complaining that they cannot surf the internet. One possible cause is that:

How can you buffer upstream grants instead of dropping packets causing TCP retransmissions

Numerous cable modems on a common physical upstream port with similar flap list statistics is an indication of:

Which of the following CGMP (Cisco Group Management Protocol) statements is correct? (multiple answer)

With CGMP enabled, which are unique about the following MAC address range: 01-00-5E-00-00-00 to 01-00- 5E-00-00-FF? (multiple answer)

In this network, Host A is trying to reach Host D. There is no routing protocol running, but Router B and C have the following static routes configured:
Router B: ip route 10.1.3.0 255.255.255.0 ethernet 1
Router C: ip route 10.1.1.0 255.255.255.0 ethernet 1

Given the four networks listed, what valid summary address (below) contains the longest prefix?

To eliminate the need for adjacent routers on broadcast networks to form n(n-1)/2 adjacencies, IS-IS defines a pseudonode or Designated Intermediate System, DIS. All router on the broadcast medium form an adjacency with the DIS. The Backup DIS is called:

When using IS-IS for IP routing, Dual IS-IS defined by RFC 1195, what is true? (multiple answer)