Exam CISCO-640-802 v12(2.93) Part 2

11.For security reasons, the network administrator needs to prevent pings into the corporate networks from hosts outside the internetwork. Which protocol should be blocked with access control lists?

A: IP
B: ICMP
C: TCP
D: UDP
Correct Answers: B

12.What are two recommended ways of protecting network device configuration files from outside network security threats? (Choose two.)

A:Allow unrestricted access to the console or VTY ports.
B:Use a firewall to restrict access from the outside to the network devices.
C:Always use Telnet to access the device command line because its data is automatically encrypted.
D:Use SSH or another encrypted and authenticated transport to access device configurations.
E:Prevent the loss of passwords by disabling password encryption.
Correct Answers: B, D

13.Refer to the exhibit. The access list has been configured on the S0/0 interface of router RTB in the outbound direction. Which two packets, if routed to the interface, will be denied? (Choose two.)
access-list 101 deny tcp 192.168.15.32 0.0.0.15 any eq telnet
access-list 101 permit ip any any



A:source ip address: 192.168.15.5; destination port: 21
B:source ip address:, 192.168.15.37 destination port: 21
C:source ip address:, 192.168.15.41 destination port: 21
D:source ip address:, 192.168.15.36 destination port: 23
E:source ip address: 192.168.15.46; destination port: 23
F:source ip address:, 192.168.15.49 destination port: 23

Correct Answers: D, E

14.What are two security appliances that can be installed in a network? (Choose two.)

A:ATM
B:IDS
C:IOS
D:IOX
E:IPS
F:SDM

Correct Answers: B, E

15.Refer to the exhibit. Switch1 has just been restarted and has passed the POST routine. Host A sends its initial frame to Host C. What is the first thing the switch will do as regards populating the switching table?



A: Switch1 will add 192.168.23.4 to the switching table.
B: Switch1 will add 192.168.23.12 to the switching table.
C: Switch1 will add 000A.8A47.E612 to the switching table.
D: Switch1 will add 000B.DB95.2EE9 to the switching table.

Correct Answers: C


16.The user of Host1 wants to ping the DSL modem/router at 192.168.1.254. Based on the Host1 ARP table that is shown in the exhibit, what will Host1 do?



A: send a unicast ARP packet to the DSL modem/router
B: send unicast ICMP packets to the DSL modem/router
C: send Layer 3 broadcast packets to which the DSL modem/router responds
D: send a Layer 2 broadcast that is received by Host2, the switch, and the DSL modem/router

Correct Answers: B

17.Refer to the exhibit. What is the most efficient summarization that R1 can use to advertise its networks to R2?



A: 172.1.0.0/22
B: 172.1.0.0/21
C: 172.1.4.0/22
D: 172.1.4.0/24
172.1.5.0/24
172.1.6.0/24
172.1.7.0/24
E: 172.1.4.0/25
172.1.4.128/25
172.1.5.0/24
172.1.6.0/24
172.1.7.0/24

Correct Answers: C

18.LAB



19.Which spread spectrum technology does the 802.11b standard define for operation?

A: IR
B: DSSS
C: FHSS
D: DSSS and FHSS
E: IR, FHSS, and DSSS

Correct Answers: B

20.Refer to the exhibit. Assume that all router interfaces are operational and correctly configured. In addition, assume that OSPF has been correctly configured on router R2. How will the default route configured on R1 affect the operation of R2?



A: Any packet destined for a network that is not directly connected to router R1 will be dropped.
B: Any packet destined for a network that is not directly connected to router R2 will be dropped immediately.
C: Any packet destined for a network that is not directly connected to router R2 will be dropped immediately because of the lack of a gateway on R1.
D: The networks directly connected to router R2 will not be able to communicate with the 172.16.100.0, 172.16.100.128, and 172.16.100.64 subnetworks.
E: Any packet destined for a network that is not referenced in the routing table of router R2 will be directed to R1. R1 will then send that packet back to R2 and a routing loop will occur.

Correct Answers: E