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Flashcards in Online Final Exam Deck (63):
1

In IPv6, all routes are level _ ultimate routes.

1

2

A college marketing department has a networked storage device that uses the IP address 10.18.7.5, TCP port 443 for encryption, and UDP port 4365 for video streaming. The college already uses PAT on the router that connects to the Internet. The router interface has the public IP address of 209.165.200.225/30. The IP NAT pool currently uses the IP addresses ranging from 209.165.200.228-236. Which configuration would the network administrator add to allow this device to be accessed by the marketing personnel from home?

ip nat inside source static tcp 10.18.7.5 443 209.165.200.225 443

ip nat inside source static udp 10.18.7.5 4365 209.165.200.225 4365

3

A network administrator is explaining to a junior colleague the use of the lt and gt keywords when filtering packets using an extended ACL. Where would the lt or gt keywords be used?

in an IPv4 extended ACL that allows packets from a range of TCP ports destined for a specific network device

4

If RIPng is enabled, how many hops away does R1 consider the 2001:0DB8:ACAD:1::/64 network to be?

3

4

What is a function of the distribution layer?

interconnection of large-scale networks in wiring closets 

5

Static routes are configured by the use of the ________ global configuration command.

ip route

6

Which type of route is 172.16.0.0/16?

level 1 parent route

7

Which type of traffic would most likely have problems when passing through a NAT device?

IPsec

8

Which two packet filters could a network administrator use on an IPv4 extended ACL?

  1. ICMP message type
  2. destination UDP port number 

8

On a switch that is configured with multiple VLANs, which command will remove only VLAN 100 from the switch?

no vlan 100

9

Which command will create a static route on R2 in order to reach PC B?

R1(config)# ip route 172.16.2.0 255.255.255.0 172.16.3.1

10

What is a disadvantage of NAT?

There is no end-to-end addressing.

10

What summary static address would be configured on R1 to advertise to R3?

192.168.0.0/22

11

When configuring a switch to use SSH for virtual terminal connections, what is the purpose of the crypto key generate rsa command?

create a public and private key pair

12

What gives the ability to store frames before forwarding them?

Buffering

13

What does the cost of an OSPF link indicate?

A lower cost indicates a better path to the destination than a higher cost does.

13

What best describes the operation of distance vector routing protocols?

They send their routing tables to directly connected neighbors. 

14

The Gigabit interfaces on both routers have been configured with subinterface numbers that match the VLAN numbers connected to them. PCs on VLAN 10 should be able to print to the P1 printer on VLAN 12. PCs on VLAN 20 should print to the printers on VLAN 22. What interface and in what direction should you place a standard ACL that allows printing to P1 from data VLAN 10, but stops the PCs on VLAN 20 from using the P1 printer?

Outbound on R1 Gi0/1.12

15

Which kind of message is sent by a DHCP client when its IP address lease has expired?

a DHCPREQUEST unicast message 

16

Which three values or sets of values are included when creating an extended access control list entry? 

  1. access list number between 100 and 199
  2. source address and wildcard mask
  3. destination address and wildcard mask

17

What is the second step in the link-state routing process?

Each router is responsible for “saying hello” to its neighbors on directly connected networks.

18

Which three requirements are necessary for two OSPFv2 routers to form an adjacency?

  1. The link interface subnet masks must match. 
  2. The two routers must include the inter-router link network in an OSPFv2 network command. 
  3. The OSPF hello or dead timers on each router must match. 

19

Which summary IPv6 static route statement can be configured to summarize only the routes to networks 2001:db8:cafe::/58 through 2001:db8:cafe:c0::/58?

ipv6 route 2001:db8:cafe::/56 S0/0/0

20

What happens immediately after two OSPF routers have exchanged hello packets and have formed a neighbor adjacency?

They exchange abbreviated lists of their LSDBs

22

Which two factors are important when deciding which interior gateway routing protocol to use?

  1. speed of convergence
  2. scalability 

23

How many broadcast and collision domains exist in the topology?

5 broadcast domains and 10 collision domains

23

Which two commands can be used to verify the content and placement of access control lists?

  1. show access-lists
  2. show running-config

24

A Layer 3 switch routes for three VLANs and connects to a router for Internet connectivity. Which two configurations would be applied to the switch?

(config)# interface gigabitethernet 1/1

(config-if)# no switchport

(config)# ip routing

25

A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?

Only devices in VLAN 20 see the frame.

26

Which switching method drops frames that fail the FCS check?

store-and-forward switching 

27

A network administrator is adding ACLs to a new IPv6 multirouter environment. Which IPv6 ACE is automatically added implicitly at the end of an ACL so that two adjacent routers can discover each other?

permit icmp any any nd-na 

28

A network administrator is designing an ACL. The networks:

  • 192.168.1.0/25
  • 192.168.0.0/25
  • 192.168.0.128/25
  • 192.168.1.128/26
  • 192.168.1.192/26

are affected by the ACL. Which wildcard mask, if any, is the most efficient to use when specifying all of these networks in a single ACL permit entry?

0.0.1.255 

29

A router has used the OSPF protocol to learn a route to the 172.16.32.0/19 network. Which command will implement a backup floating static route to this network?

ip route 172.16.32.0 255.255.224.0 S0/0/0 200

30

What is the third step in the link-state routing process?

Each router builds a Link-State Packet (LSP) containing the state of each directly connected link

31

What do switched use to froward frames to their destination?

MAC address table

33

R1 was configured with the static route command ip route 209.165.200.224 255.255.255.224 S0/0/0 and consequently users on network 172.16.0.0/16 are unable to reach resources on the Internet. How should this static route be changed to allow user traffic from the LAN to reach the Internet?

Change the destination network and mask to 0.0.0.0 0.0.0.0

34

R1 has been configured as shown. However, PC1 is not able to receive an IPv4 address. What is the problem?

The ip helper-address command was applied on the wrong interface.

35

Which information does a switch use to populate the MAC address table?

the source MAC address and the incoming port

36

Which two statements are characteristics of routed ports on a multilayer switch?

  1. They are used for point-to-multipoint links.
  2. They are not associated with a particular VLAN.

37

What caused the following error message to appear?

01:11:12: %PM-4-ERR_DISABLE: psecure-violation error detected on Fa0/8, putting Fa0/8 in err-disable state
01:11:12: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 0011.a0d4.12a0 on port FastEthernet0/8.
01:11:13: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/8, changed state to down
01:11:14: %LINK-3-UPDOWN: Interface FastEthernet0/8, changed state to down

Port security was enabled on the switch port, and an unauthorized connection was made on switch port Fa0/8.

38

The partial configuration that is shown was used to configure router on a stick for VLANS 10, 30, and 50. However, testing shows that there are some connectivity problems between the VLANs. Which configuration error is causing this problem?

The wrong VLAN has been configured on subinterface Fa0/0.50. 

39

How did the router obtain the last route that is shown?

Another router in the same organization provided the default route by using a dynamic routing protocol.

40

What is the fifth step in the link-state routing process?

Each router uses the database to construct a complete map of the topology and computes the best

41

What allows each switchport to simultanieously send and recieve data?

Full duplex

41

What does each switch port create that reduced the possiblity of collisions?

Collision Domain

42

A network administrator is configuring a router as a DHCPv6 server. The administrator issues a show ipv6 dhcp pool command to verify the configuration. Which statement explains the reason that the number of active clients is 0?

The state is not maintained by the DHCPv6 server under stateless DHCPv6 operation.

43

Which problem is evident if the show ip interface command shows that the interface is down and the line protocol is down?

A cable has not been attached to the port.

44

A router needs to be configured to route within OSPF area 0. Which two commands are required to accomplish this?

  1. router ospf 1
  2. network 192.168.2.0 0.0.0.255 area 0

46

Which three advantages are provided by static routing?

  1. The path a static route uses to send data is known.
  2. Static routing does not advertise over the network, thus providing better security. 
  3. Static routing typically uses less network bandwidth and fewer CPU operations than dynamic routing does. 

48

Which statement describes a route that has been learned dynamically?

It is automatically updated and maintained by routing protocols. 

49

How is the router ID for an OSPFv3 router determined?

the highest IPv4 address on an active interface 

50

Two employees in the Sales department work different shifts with their laptop computers and share the same Ethernet port in the office. Which set of commands would allow only these two laptops to use the Ethernet port and create violation log entry without shutting down the port if a violation occurs?

  1. switchport mode access
  2. switchport port-security
  3. switchport port-security maximum 2
  4. switchport port-security mac-address sticky
  5. switchport port-security violation restrict

51

A network administrator is using the router-on-a-stick method to configure inter-VLAN routing. Switch port Gi1/1 is used to connect to the router. Which command should be entered to prepare this port for the task?

  1. interface gigabitethernet 1/1
  2. switchport mode trunk

52

When a Cisco switch receives untagged frames on a 802.1Q trunk port, which VLAN ID is the traffic switched to by default?

native VLAN ID 

53

What are two features of a link-state routing protocol?

  1. Routers send triggered updates in response to a change.
  2. Routers create a topology of the network by using information from other routers. 

55

What is the purpose of setting the native VLAN separate from data VLANs?

A separate VLAN should be used to carry uncommon untagged frames to avoid bandwidth contention on data VLANs. 

56

What is the fourth step in the link-state routing process?

Each router floods the LSP to all neighbors, who then store all LSPs received in a database

58

What is the first step in the link-state routing process?

Each router learns about its own directly connected networks.

59

Which command, when issued in the interface configuration mode of a router, enables the interface to acquire an IPv4 address automatically from an ISP, when that link to the ISP is enabled?

ip address dhcp

60

A small-sized company has 20 workstations and 2 servers. The company has been assigned a group of IPv4 addresses 209.165.200.224/29 from its ISP. What technology should the company implement in order to allow the workstations to access the services over the Internet?

dynamic NAT

61

What benefit does NAT64 provide?

It allows sites to connect IPv6 hosts to an IPv4 network by translating the IPv6 addresses to IPv4 addresses. 

62

Which statement is correct about IPv6 routing?

IPv6 uses the link-local address of neighbors as the next-hop address for dynamic routes. 

63

Which three pieces of information does a link-state routing protocol use initially as link-state information for locally connected links?

  1. the cost of that link 
  2. the type of network link 
  3. the link router interface IP address and subnet mask