Day 23

1. 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.

Split horizon

Poison reverse

Invalidation timers

Route poisoning

Question 1 of 20

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

False

True

Question 2 of 20

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

True

False

Question 3 of 20

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

True

False

Question 4 of 20

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

access-group 101 in

access-class 101 in

ip access-group 101 in

ip access-class 101 in

Question 5 of 20

6. 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 6 of 20

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

False

True

Question 7 of 20

8. 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?

OSPF

BGP

None of them

EIGRP external

Question 8 of 20

9. 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 9 of 20

10. 110 is the administrative distance for?

OSPF

RIP

EIGRP External

EIGRP Internal

Question 10 of 20

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

True.

False.

Question 11 of 20

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

True

False

Question 12 of 20

13. 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?

PING can only be blocked with a firewall.

Router can't filter self generated traffic.

ACL not configured correctly.

You need to use a named ACL to block ping.

Question 13 of 20

14. 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.

Route poisoning

Triggered updates

Split horizon

Hold-down timer

Question 14 of 20

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

Static routing

Link state protocols

BGP only

Distance vector routing protocols

Question 15 of 20

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

True

False

Question 16 of 20

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

False

True

Question 17 of 20

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

The connection was generated by a host inside your network.

The connection was generated by a host outside your network.

The SYN or SYN ACK bit is set.

The ACK or RST bit is set.

Question 18 of 20

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

False

True

Question 19 of 20

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

1300-1999

2000-2699

200-299

100-199

Question 20 of 20

Main navigation