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Q51. - (Topic 1) 

Refer to the exhibit. 

The host in Kiev sends a request for an HTML document to the server in Minsk. What will be the source IP address of the packet as it leaves the Kiev router? 

A. 10.1.0.1 

B. 10.1.0.5 

C. 10.1.0.6 

D. 10.1.0.14 

E. 10.1.1.16 

F. 10.1.2.8 

Answer:

Explanation: 

Although the source and destination MAC address will change as a packet traverses a network, the source and destination IP address will not unless network address translation (NAT) is being done, which is not the case here. 


Q52. - (Topic 3) 

Refer to the exhibit. 

Which two statements are correct? (Choose two.) 

A. This is a default route. 

B. Adding the subnet mask is optional for the ip route command. 

C. This will allow any host on the 172.16.1.0 network to reach all known destinations beyond RouterA. 

D. This command is incorrect, it needs to specify the interface, such as s0/0/0 rather than an IP address. 

E. The same command needs to be entered on RouterA so that hosts on the 172.16.1.0 network can reach network 10.0.0.0. 

Answer: A,C 

Explanation: 

This is obviously the default route which is set between the routers and since it is entered in such a manner that it ensures connectivity between the stub network and any host lying beyond RouterA. 


Q53. - (Topic 1) 

Which three statements are true about the operation of a full-duplex Ethernet network? (Choose three.) 

A. There are no collisions in full-duplex mode. 

B. A dedicated switch port is required for each full-duplex node. 

C. Ethernet hub ports are preconfigured for full-duplex mode. 

D. In a full-duplex environment, the host network card must check for the availability of the network media before transmitting. 

E. The host network card and the switch port must be capable of operating in full-duplex mode. 

Answer: A,B,E 

Explanation: 

Half-duplex Ethernet is defined in the original 802.3 Ethernet and Cisco says you only use one wire pair with a digital signal running in both directions on the wire. It also uses the CSMA/CD protocol to help prevent collisions and to permit retransmitting if a collision does occur. If a hub is attached to a switch, it must operate in half-duplex mode because the end stations must be able to detect collisions. Half-duplex Ethernet—typically 10BaseT—is only about 30 to 40 percent efficient as Cisco sees it, because a large 10BaseT network will usually only give you 3- to 4Mbps—at most. Full-duplex Ethernet uses two pairs of wires, instead of one wire pair like half duplex. Also, full duplex uses a point-to-point connection between the transmitter of the transmitting device and the receiver of the receiving device, which means that with full-duplex data transfer, you get a faster data transfer compared to half duplex. And because the transmitted data is sent on a different set of wires than the received data, no collisions occur. The reason you don’t need to worry about collisions is because now Full-duplex Ethernet is like a freeway with multiple lanes instead of the single-lane road provided by half duplex. Full-duplex Ethernet is supposed to offer 100 percent efficiency in both directions; this means you can get 20Mbps with a 10Mbps Ethernet running full duplex, or 200Mbps for FastEthernet. 


Q54. - (Topic 1) 

Refer to the exhibit. 

Which option describes how SwitchA will handle the frame just received? 

A. It will drop the frame. 

B. It will forward the frame out of port Fa0/3 only. 

C. It will flood the frame out all ports. 

D. It will flood the frame out of all the ports except Fa0/3. 

Answer:


Q55. - (Topic 7) 

Which component of a routing table entry represents the subnet mask? 

A. routing protocol code 

B. prefix 

C. metric 

D. network mask 

Answer:

Explanation: 

IP Routing Table Entry TypesAn entry in the IP routing table contains the following information in the order presented: Network ID. The network ID or destination corresponding to the route. The network ID can be class-based, subnet, or supernet network ID, or an IP address for a host route. Network Mask. The mask that is used to match a destination IP address to the network ID. Next Hop. The IP address of the next hop. Interface. An indication of which network interface is used to forward the IP packet. Metric. A number used to indicate the cost of the route so the best route among possible multiple routes to the same destination can be selected. A common use of the metric is to indicate the number of hops (routers crossed) to the network ID. Routing table entries can be used to store the following types of routes: Directly Attached Network IDs. Routes for network IDs that are directly attached. For directly attached networks, the Next Hop field can be blank or contain the IP address of the interface on that network. Remote Network IDs. Routes for network IDs that are not directly attached but are available across other routers. For remote networks, the Next Hop field is the IP address of a local router in between the forwarding node and the remote network. Host Routes. A route to a specific IP address. Host routes allow routing to occur on a per-IP address basis. For host routes, the network ID is the IP address of the specified host and the network mask is 255.255.255.255. Default Route. The default route is designed to be used when a more specific network ID or host route is not found. The default route network ID is 0.0.0.0 with the network mask of 

0.0.0.0. 


Q56. - (Topic 3) 

R1 is configured with the default configuration of OSPF. From the following list of IP addresses configured on R1, which address will the OSPF process select as the router ID? 

A. 192.168.0.1 

B. 172.16.1.1 

C. 172.16.2.1 

D. 172.16.2.225 

Answer:

Explanation: 

The Router ID (RID) is an IP address used to identify the router and is chosen using the following sequencE. 

+

 The highest IP address assigned to a loopback (logical) interface. + If a loopback interface is not defined, the highest IP address of all active router's physical interfaces will be chosen. 

+

 The router ID can be manually assigned In this case, because a loopback interface is not configured so the highest active IP address 192.168.0.1 is chosen as the router ID. 


Q57. - (Topic 1) 

Refer to the exhibit. 

What kind of cable should be used to make each connection that is identified by the numbers shown? 

A. 1 - Ethernet Crossover cable 2 - Ethernet straight-through cable 3 - Fiber Optic cable 4 - Rollover cable 

B. 1 - Ethernet straight-through cable 2 - Ethernet straight-through cable 3 - Serial cable 4 - Rollover cable 

C. 1 - Ethernet rollover cable 2 - Ethernet crossover cable 3 - Serial cable 4 - Null-modem cable 

D. 1 - Ethernet straight-through cable 2 - Ethernet Crossover cable 3 - Serial cable 4 - Rollover cable 

E. 1 - Ethernet straight-through cable 2 - Ethernet Crossover cable 3 - Serial cable 4 - Ethernet Straight-through cable 

Answer:

Explanation: 

When connecting a PC to a switch, a standard Ethernet straight through cable should be used. This same cable should also be used for switch to router connections. Generally 

speaking, crossover cables are only needed when connecting two like devices (PC-PC, 

switch-switch, router-router, etc). 

Routers connect to frame relay and other WAN networks using serial cables. 

Rollover cables are special cables used for connecting to the console ports of Cisco 

devices. 


Q58. - (Topic 1) 

To what type of port would a cable with a DB-60 connector attach? 

A. Serial port 

B. Console port 

C. Ethernet port 

D. Fibre optic port 

Answer:

Explanation: 

Serial Connection 

cl_3_dte_male 

cl_2_dce 

The picture on the left shows a V.35 DTE cable with a male DB60 connector and a male standard 34-pin Winchester-type connector. The right picture shows a V.35 DCE serial cable with a male DB60 connector and a female 34-pin Winchester-type connector. As you probably guessed already, the male connector of the DTE cable is attached to the DCE cable's female connector, this is depicted in the picture below. This is known as a back-to-back connection, and 'simulates' a WAN link. In a real world setup, the DTE cable's male connector typically connects to a port on a CSU/DSU provided by a service provider (i.e. telco), which in turn connects to a CSU/DSU at another location, thru a T1 link for example. 

The DB60 connector connects to a Serial interface on a router. 

cl_4_malefemale Reference: http://www.techexams.net/techlabs/ccna/lab_hardware.shtml 


Q59. - (Topic 5) 

Refer to the exhibit. 

For security reasons, information about RTA, including platform and IP addresses, should not be accessible from the Internet. This information should, however, be accessible to devices on the internal networks of RTA. 

Which command or series of commands will accomplish these objectives? 

A. RTA(config)#no cdp run 

B. RTA(config)#no cdp enable 

C. RTA(config)#interface s0/0 RTA(config-if)#no cdp run 

D. RTA(config)#interface s0/0 RTA(config-if)#no cdp enable 

Answer:

Explanation: 

http://www.cisco.com/en/US/tech/tk962/technologies_tech_note09186a00801aa000.shtml# topicenab 

When CDP is enabled globally using the cdp run command, it is enabled by default on all supported interfaces (except for Frame Relay multipoint subinterfaces) to send and receive CDP information. You can disable CDP on an interface that supports CDP with the no cdp enable command. 

Router#show cdp neighbors 

Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r – Repeater 

Router# On this router, CDP is enabled on Serial 1 and Ethernet 0 interfaces. Disable CDP on the Serial 1 interface and verify if the neighbor device is discovered on the serial 1 interface, as this output shows: Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#interface s1 Router(config-if)#no cdp enable Router(config-if)# Z Router#4w5D. %SYS-5-CONFIG_I: Configured from console by console 


Q60. CORRECT TEXT - (Topic 6) 

There are three locations in a school district of a large city: ROUTER -M, ROUTER -W and ROUTER -U. The network connection between two of these locations has already functioned. Configure the ROUTER -M router IP addresses on the E0 and S0 interfaces so that the E0 receives the first usable subnet while the S0 receives the second usable subnet from the network 192.168.160.0/28. Both interfaces would receive the last available ip address on the proper subnet. 

NotE. The OSPF process must be configured to allow interfaces in specific subnets to participate in the routing process. 

Answer: ROUTER-M> enable PassworD. Cisco ROUTER-M# config t ROUTER-M(config)# interface e0 ROUTER-M(config-if)# ip address 192.168.160.14 255.255.255.240 

ROUTER-M(config-if)# no shutdown ROUTER -M(config-if)# exit ROUTER -M(config)# interface s0 ROUTER-M(config-if)# ip address 192.168.160.30 255.255.255.240 ROUTER-M(config-if)# no shutdown ROUTER-M(config-if)# end ROUTER-M# copy run start