CCNA Discovery 3 Module 8 Exam Answers Version 4.0

1. • 60
2.• The new commands are added to the end of the current Managers ACL.
3. • Inbound ACLs deny packets before routing lookups are required.
4. • Port 80 should be specified in the ACL.
5. • informational
6. • 172.16.31.77
• 172.16.31.78
7. • 0.0.15.255
8. • specifying internal hosts for NAT
• identifying traffic for QoS
9. • Create an access list permitting only echo reply and destination unreachable packets from the outside.
10• A router automatically reloads in 30 minutes.
11. • 192.168.20.16 to 192.168.20.31
12. • access-list 137 permit ip 192.0.2.0 0.0.0.255 any
access-list 137 permit tcp 198.18.112.0 0.0.0.255 any eq www
13. • Standard ACLs are usually placed so that all packets go through the network and are filtered at the destination.
• Standard ACLs filter based on source address only, and must be placed near the destination if other traffic is to flow.
• Extended ACLs filter with many possible factors, and they allow only desired packets to pass through the network if placed near the source.
14. • access-list 101 deny ip 192.168.3.77 0.0.0.0 192.168.2.0 0.0.0.255
access-list 101 permit ip 192.168.3.0 0.0.0.255 192.168.2.0 0.0.0.255
access-list 101 permit ip 192.168.3.0 0.0.0.255 192.168.1.0 0.0.0.255
15. • access-list 56 deny 172.19.123.0 0.0.0.255
access-list 56 permit any
16. • Router(config)# access-list 101 permit tcp any 192.168.10.25 0.0.0.0 eq telnet
Router(config)# access-list 101 deny ip any any
Router(config)# int s0/0
Router(config-if)# ip access-group 101 in
Router(config-if)# int fa0/0
Router(config-if)#ip access-group 101 in
17. • access-list 101 permit tcp 10.220.158.10 0.0.0.0 host 192.168.3.224 eq 80
18. • 0.0.0.31
19. • Use only Secure Shell (SSH) on the vty lines.
20. • A large amount of ICMP traffic is being denied at the interface, which can be an indication of a DoS

CCNA Discovery 3 Module 6 Exam Answers Version 4.0

1. • HQ is a DROTHER.
2. • A DR is not elected.
• OSPF neighbor routers are statically defined.
3. • The default-information originate command is applied on R1.
4. • neighbor adjacencies
5. • R3 to R2 to R1
6. • router ospf 1
network 192.168.10.64 0.0.0.63 area 0
network 192.168.10.192 0.0.0.3 area 0
7. • network 10.8.0.0 0.3.255.255 area 0
8. • The router with the highest OSPF priority setting wins the election for DR.
9. • Router2(config-router)# network 172.16.32.0 0.0.15.255 area 0
10.• All routers in the same area have identical link-state databases when converged.
• Calculating the shortest path for each destination is accomplished with the SPF algorithm.
11. • The DR and BDR do not change until the next election.
12. • Elections are required in broadcast multiaccess networks.
• Elections are sometimes required in NBMA networks.
13. • The timer intervals on the routers do not match.
14. • It is the OSPF cost metric.
15. • provides a stable OSPF router ID on router B
16. • The router views 10.16.1.64/30 and 10.16.1.64/27 as two different networks.
17. • Distance vector protocols take existing routes from their neighbors and add to them. Link-state protocols independently calculate full routes.
18. • 192.168.0.0/24 through 192.168.15.0/24
19. • 224.0.0.5
20. • R2 will be DR and R3 will be BDR.
21. • isolation of network instability
22. • Routers have direct knowledge of all links in the network and how they are connected.
• After the initial LSA flooding, routers generally require less bandwidth to communicate changes in a topology.
23. • Each router has a link-state database containing the same status information.
24.• The OSPF routing configuration on RTRC has a missing or incorrect network statement.

CCNA Discovery 3 Module 5 Exam Answers Version 4.0

1. • They can support multiple routed protocols
• They send partial routing updates in response to topology changes.
• They use hello packets to inform neighboring routers of their status.
2.• A distance vector routing protocol is used.
• Routing updates broadcast every 30 seconds.
• Hop count is the only metric used for route selection.
3. • The route is viable and can be used to forward traffic.
4.• Suboptimal paths will be selected.
• Network convergence may be affected.
5. • 90
6. • RIP is the routing protocol configured.
• The metric for this route is 2.
7.• RTA and RTB will accept updates from each other.
8. • RTP
9. • RTR-2(config)# router eigrp 1
RTR-2(config-router)# network 198.18.76.0
10. • the use of variable length subnet masks
11. • the calculated metric for the destination network
12. • It identifies the directly connected networks that will be included in the RIP routing updates.
13. • by exchanging hello packets with neighboring routers
14. • ip summary-address eigrp 1 192.168.10.64 255.255.255.192
15. • every 30 seconds
16.• RIPv1 is a classful routing protocol.
• RIPv1 does not support VLSM.
17. • EIGRP authentication uses the MD5 algorithm.
• EIGRP authentication uses a pre-shared key.
18. • when a network contains discontiguous network addresses
19. • 15 hops
20. • A feasible successor route can be found in the topology table.
• The topology table shows whether a route is in the passive or active state.
21. • RIPv2 is configured on this router.