CCNA 2 Chapter 9 v5.0 Exam Answers 2013

1、1 A network administrator needs to configure a standard ACL so that only the workstation of the administrator with the IP address 3 can access the virtual terminal of the main router. Which two configuration commands can achieve the task? (Choose two.)Router1(config)# access-list 10 perm

2、it 3 Router1(config)# access-list 10 permit 3 * Router1(config)# access-list 10 permit 3 55Router1(config)# access-list 10 permit 3 55Router1(config)# access-list 10 permit host 3*2Refer to the exhibi

3、t. A router has an existing ACL that permits all traffic from the network. The administrator attempts to add a new ACE to the ACL that denies packets from host and receives the error message that is shown in the exhibit. What action can the administrator take to block packets f

4、rom host while still permitting all other traffic from the network?Manually add the new deny ACE with a sequence number of 5.* Manually add the new deny ACE with a sequence number of 15.Add a deny any any ACE to access-list 1.Create a second access list denying the host and app

5、ly it to the same interface.3Launch PT      Hide and Save PTOpen the PT Activity. Perform the tasks in the activity instructions and then answer the question.Why is the ACL not working?The ACL is missing a deny ip any any ACE.The ACL is applied in the wrong direction.The access-list 1

6、05 command or commands are incorrect.The ACL is applied to the wrong interface.* No ACL is needed for this scenario.4 Which statement describes a characteristic of standard IPv4 ACLs?They are configured in the interface configuration mode.They can be created with a number but not with a name.They fi

7、lter traffic based on source IP addresses only.* They can be configured to filter traffic based on both source IP addresses and source ports.5Refer to the exhibit. The network administrator that has the IP address of 3/25 needs to have access to the corporate FTP server (/28). The

8、FTP server is also a web server that is accessible to all internal employees on networks within the 10.x.x.x address. No other traffic should be allowed to this server. Which extended ACL would be used to filter this traffic, and how would this ACL be applied? (Choose two.)access-list 105 permit ip

9、host 3 host access-list 105 permit tcp any host eq wwwaccess-list 105 permit ip any anyR1(config)# interface s0/0/0R1(config-if)# ip access-group 105 outR1(config)# interface gi0/0R1(config-if)# ip access-group 105 out *access-list 105 permit tcp host 3 host 10.0

10、.54.5 eq 20access-list 105 permit tcp host 3 host eq 21access-list 105 permit tcp 55 host eq wwwaccess-list 105 deny ip any host access-list 105 permit ip any any *access-list 105 permit tcp host any eq wwwaccess-list 105 permit tcp

11、 host 3 host eq 20access-list 105 permit tcp host 3 host eq 21R2(config)# interface gi0/0R2(config-if)# ip access-group 105 in6 What are two possible uses of access control lists in an enterprise network? (Choose two.)limiting debug outputs* reducing the process

12、ing load on routerscontrolling the physical status of router interfacescontrolling virtual terminal access to routers* allowing Layer 2 traffic to be filtered by a router7 An administrator has configured an access list on R1 to allow SSH administrative access from host 00. Which command co

13、rrectly applies the ACL?R1(config-line)# access-class 1 outR1(config-line)# access-class 1 in* R1(config-if)# ip access-group 1 outR1(config-if)# ip access-group 1 in8 Which three statements are generally considered to be best practices in the placement of ACLs? (Choose three.)Place extended ACLs cl

14、ose to the source IP address of the traffic.* For every inbound ACL placed on an interface, there should be a matching outbound ACL.Place extended ACLs close to the destination IP address of the traffic.Place standard ACLs close to the destination IP address of the traffic.* Filter unwanted traffic

15、before it travels onto a low-bandwidth link.* Place standard ACLs close to the source IP address of the traffic.9 Which three implicit access control entries are automatically added to the end of an IPv6 ACL? (Choose three.)deny icmp any anydeny ipv6 any any* permit icmp any any nd-ns* permit ipv6 a

16、ny anydeny ip any anypermit icmp any any nd-na*10 Which two characteristics are shared by both standard and extended ACLs? (Choose two.)Both filter packets for a specific destination host IP address.Both can be created by using either a descriptive name or number.* Both include an implicit deny as a

17、 final ACE.* Both can permit or deny specific services by port number.Both kinds of ACLs can filter based on protocol type.11Place the options in the following order:the first valid host address in a subnet subnetwork address of a subnet with 14 valid host addresses all IP address bits must match ex

18、actly hosts in a subnet with the subnet mask addresses with a subnet mask of 48 not scored -12 Consider the following access list that allows IP phone configuration file transfers from a particular host to a TFTP server:R1(config)# access-list 105 permit udp host

19、3 host range 1024 5000R1(config)# access-list 105 deny ip any anyR1(config)# interface gi0/0R1(config-if)# ip access-group 105 outWhich method would allow the network administrator to modify the ACL and include FTP transfers from any source IP address?R1(config)# interface gi0/0R1(config-i

20、f)# no ip access-group 105 outR1(config)# access-list 105 permit tcp any host eq 20R1(config)# access-list 105 permit tcp any host eq 21R1(config)# interface gi0/0R1(config-if)# ip access-group 105 outR1(config)# access-list 105 permit tcp any host eq 20R1(config)# acce

21、ss-list 105 permit tcp any host eq 21R1(config)# access-list 105 permit udp host 3 host range 1024 5000R1(config)# access-list 105 permit tcp any host eq 20R1(config)# access-list 105 permit tcp any host eq 21R1(config)# access-list 105 deny ip any an

22、yR1(config)# interface gi0/0R1(config-if)# no ip access-group 105 outR1(config)# no access-list 105R1(config)# access-list 105 permit udp host 3 host range 1024 5000R1(config)# access-list 105 permit tcp any host eq 20R1(config)# access-list 105 permit tcp any host 10.0.

23、54.5 eq 21R1(config)# access-list 105 deny ip any anyR1(config)# interface gi0/0R1(config-if)# ip access-group 105 out *13 What two functions describe uses of an access control list? (Choose two.)ACLs provide a basic level of security for network access.* ACLs can control which areas a host can acce

24、ss on a network.* Standard ACLs can restrict access to specific applications and ports.ACLs can permit or deny traffic based upon the MAC address originating on the router.ACLs assist the router in determining the best path to a destination.14 Which feature is unique to IPv6 ACLs when compared to th

25、ose of IPv4 ACLs?an implicit permit of neighbor discovery packets* an implicit deny any any ACEthe use of named ACL entriesthe use of wildcard masks15 Which three statements describe ACL processing of packets? (Choose three.)Each packet is compared to the conditions of every ACE in the ACL before a

26、forwarding decision is made.A packet that has been denied by one ACE can be permitted by a subsequent ACE.Each statement is checked only until a match is detected or until the end of the ACE list.* An implicit deny any rejects any packet that does not match any ACE.* A packet that does not match the

27、 conditions of any ACE will be forwarded by default.A packet can either be rejected or forwarded as directed by the ACE that is matched.*16 Which statement describes a difference between the operation of inbound and outbound ACLs?On a network interface, more than one inbound ACL can be configured bu

28、t only one outbound ACL can be configured.In contrast to outbound ALCs, inbound ACLs can be used to filter packets with multiple criteria.Inbound ACLs are processed before the packets are routed while outbound ACLs are processed after the routing is completed.* Inbound ACLs can be used in both routers and switches but outbound ACLs can be used only on routers.17 What is the only type of ACL available for IPv6?named standardnumbered extendednamed extended* numbered standard18 Which IPv6 ACL command entry will permit traffic from any