[2021-New] Cisco 100-105 Dumps With Update Exam Questions (81-90)

100-105 Dumps

100-105 Exam Questions - Online Test

100-105 Premium VCE File

Learn More 100% Pass Guarantee - Dumps Verified - Instant Download
150 Lectures, 20 Hours

Q1. - (Topic 7)

Which statement about native VLAN traffic is true?

A. Cisco Discovery Protocol traffic travels on the native VLAN by default

B. Traffic on the native VLAN is tagged with 1 by default

C. Control plane traffic is blocked on the native VLAN.

D. The native VLAN is typically disabled for security reasons

Answer: B

Q2. - (Topic 5)

Refer to the exhibit.

A technician pastes the configurations in the exhibit into the two new routers shown. Otherwise, the routers are configured with their default configurations.

A ping from Host1 to Host 2 fails, but the technician is able to ping the S0/0 interface of R2 from Host 1. The configurations of the hosts have been verified as correct. What could be the cause of the problem?

A. The serial cable on R1 needs to be replaced.

B. The interfaces on R2 are not configured properly

C. R1 has no route to the 192.168.1.128 network.

D. The IP addressing scheme has overlapping subnetworks.

E. The ip subnet-zero command must be configured on both routers.

Answer: C

Explanation:

Without a static route pointing to the host 2 network the router R1 is unaware of the path to take to reach that network and reply traffic cannot be sent.

Q3. - (Topic 7)

Which device allows users to connect to the network using a single or double radio?

A. access point

B. switch

C. wireless controller

D. firewall

Answer: A

Q4. - (Topic 5)

The network administrator has found the following problem.

The remote networks 172.16.10.0, 172.16.20.0, and 172.16.30.0 are accessed through the Central router's serial 0/0 interface. No users are able to access 172.16.20.0. After reviewing the command output shown in the graphic, what is the most likely cause of the problem?

A. no gateway of last resort on Central

B. Central router's not receiving 172.16.20.0 update

C. incorrect static route for 172.16.20.0

D. 172.16.20.0 not located in Central's routing table

Answer: C

Explanation:

If we use 172.16.20.0 to route to 172.16.150.15, then the packet will route back. To clear this error we have to use.#no ip route 172.16.20.0 255.255.255.0 172.16.150.15

.command in configuration mode.

Q5. - (Topic 7)

Which feature allows a device to use a switch port that is configured for half-duplex to access the network?

A. CSMA/CD

B. IGMP

C. port security

D. split horizon

Answer: A

Explanation:

Ethernet began as a local area network technology that provided a half-duplex shared channel for stations connected to coaxial cable segments linked with signal repeaters. In this appendix, we take a detailed look at the half-duplex shared-channel mode of operation, and at the CSMA/CD mechanism that makes it work. In the original half-duplex mode, the CSMA/CD protocol allows a set of stations to compete for access to a shared Ethernet channel in a fair and equitable manner. The protocol’s rules determine the behavior of Ethernet stations, including when they are allowed to transmit a frame onto a shared Ethernet channel, and what to do when a collision occurs. Today, virtually all devices are connected to Ethernet switch ports over full-duplex media, such as twisted-pair cables. On this type of connection, assuming that both devices can support the full-duplex mode of operation and that Auto-Negotiation (AN) is enabled, the AN protocol will automatically select the highest-performance mode of operation supported by the devices at each end of the link. That will result in full-duplex mode for the vast majority of Ethernet connections with modern interfaces that support full duplex and AN.

Q6. - (Topic 4)

In the configuration of NAT, what does the keyword overload signify?

A. When bandwidth is insufficient, some hosts will not be allowed to access network translation.

B. The pool of IP addresses has been exhausted.

C. Multiple internal hosts will use one IP address to access external network resources.

D. If the number of available IP addresses is exceeded, excess traffic will use the specified address pool.

Answer: C

Explanation:

The keyword overload.used in the ip nat inside source list 1 pool ovrld overload example command allows NAT to translate multiple inside devices to the single address in the pool. The types of NAT include: Static address translation (static NAT)—Allows one-to-one mapping between local and global addresses. Dynamic address translation (dynamic NAT)—Maps unregistered IP addresses to registered IP addresses from a pool of registered IP addresses. Overloading—Maps multiple unregistered IP addresses to a single registered IP address (many to one) using different ports. This method is also known as Port Address Translation (PAT). By using overloading, thousands of users can be connected to the Internet by using only one real global IP address.

Q7. 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

Q8. - (Topic 2)

Which address type does a switch use to make selective forwarding decisions?

A. Source IP address

B. Destination IP address

C. Source and destination IP address

D. Source MAC address

E. Destination MAC address

Answer: E

Explanation:

Switches analyze the destination MAC to make its forwarding decision since it is a layer 2 device. Routers use the destination IP address to make forwarding decisions.

Q9. - (Topic 3)

What command sequence will configure a router to run OSPF and add network 10.1.1.0 /24 to area 0?

A. router ospf area 0 network 10.1.1.0 255.255.255.0 area 0

B. router ospf network 10.1.1.0 0.0.0.255

C. router ospf 1 network 10.1.1.0 0.0.0.255 area 0

D. router ospf area 0 network 10.1.1.0 0.0.0.255 area 0

E. router ospf network 10.1.1.0 255.255.255.0 area 0 F. router ospf 1 network 10.1.1.0 0.0.0.255

Answer: C

Explanation:

Enabling OSPFSUMMARY STEPS

enable

configure terminal

router ospf process-id

network ip-address wildcard-mask area area-id

end

DETAILED STEPS

Command or Action Purpose Step.1 enable

Example:

Device> enable Enables privileged EXEC mode. . Enter your password if prompted.

Step.2 configure terminal

Example:

Device# configure terminal Enters global configuration mode.

Step.3 router ospf process-id

Example:

Device(config)# router ospf 109

Enables OSPF routing and enters router configuration mode.

Step.4 network ip-address wildcard-mask area area-id

Example:

Device(config-router)# network 192.168.129.16 0.0.0.3 area 0

Defines an interface on which OSPF runs and defines the area ID for that interface.

Step.5 end

Example:

Device(config-router)# end

Exits router configuration mode and returns to privileged EXEC mode.

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/12-4t/iro-12-4t-book/iro-cfg.html#GUID-588D1301-F63C-4DAC-BF1C-C3735EB13673

Q10. DRAG DROP - (Topic 4)

Drag the definition on the left to the correct term on the right. Not all definitions on the left will be used.

Answer: