Day 23

1. You add an extended access list blocking ICMP traffic from leaving your serial interface. You issue a ping command but it works. What went wrong?

ACL not configured correctly.

Router can't filter self generated traffic.

You need to use a named ACL to block ping.

PING can only be blocked with a firewall.

Question 1 of 20

2. This feature prevents routers from sending packets through a route that has become invalid. Distance Vector protocols use this to indicate that a route is no longer reachable. This is accomplished by setting the route metric to a maximum value.

Route poisoning

Split horizon

Invalidation timers

Poison reverse

Question 2 of 20

3. Putting the bandwidth 512 on a 256k interface effectively doubles the capacity of the link.

True

False

Question 3 of 20

4. Names ACLs are considered generally more secure than extended.

False

True

Question 4 of 20

5. 110 is the administrative distance for?

EIGRP Internal

RIP

EIGRP External

OSPF

Question 5 of 20

6. Passive interfaces do send hellos but don't forward routing updates.

False

True

Question 6 of 20

7. This feature allows the update timer to be bypassed in the case of important updates. For example, the RIP 30-second timer can be ignored if a critical routing update must be propagated through the network.

Triggered updates

Hold-down timer

Route poisoning

Split horizon

Question 7 of 20

8. Cisco advise you place an extended ACL as close to the source as possible and standard as close to the destination as possible.

False

True

Question 8 of 20

9. Once routes have been placed into the routing table, the shortest match is always preferred over the longest.

True

False

Question 9 of 20

10. In Cisco IOS the reliability of a link or interface is represented as a fraction of 256.

False

True

Question 10 of 20

11. You apply an ACL to a telnet (VTY) line with which command?

access-class 101 in

access-group 101 in

ip access-group 101 in

ip access-class 101 in

Question 11 of 20

12. Counting to infinity and split horizon are features of?

Link state protocols

Distance vector routing protocols

BGP only

Static routing

Question 12 of 20

13. The range for extended ACLs and the expanded ranges are? (choose two)

200-299

1300-1999

100-199

2000-2699

Question 13 of 20

14. Standard access lists can only examine source network or port.

True

False

Question 14 of 20

15. ACLs can only be used once on your router.

True.

False.

Question 15 of 20

16. A colleague asks you what the 'established' keyword means at the end of an ACL. What do you tell her? (choose two)

The ACK or RST bit is set.

The connection was generated by a host outside your network.

The connection was generated by a host inside your network.

The SYN or SYN ACK bit is set.

Question 16 of 20

17. EIGRP is an example of a classful routing protocol.

True

False

Question 17 of 20

18. A router receives the route 10.0.0.0/8 from EIGRP external, OSPF and Internal BGP. Which does it install in the routing table?

BGP

None of them

EIGRP external

OSPF

Question 18 of 20

19. As a frame is passed across a network, the IP address field is changed from device to device but the MAC address remains the same.

False

True

Question 19 of 20

20. The delay command will affect the EIGRP metric calculation.

True

False

Question 20 of 20

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