Renewal 100-105 Training Materials 2021

NEW QUESTION 1

When is a routing table entry identified as directly connected?

• A. when the local router is in use as the network default gateway
• B. when the network resides on a remote router that is physically connected to the local router
• C. when an interface on the route is configure with an ip address and enabled
• D. when the route is statically assigned to reach a specific network

Answer: C

NEW QUESTION 2

Which two pieces of information can be shared with LLDP TLVs? (Choose two)

• A. device management address.
• B. device type
• C. spanning-tree topology
• D. routing configuration
• E. access-list configuration

Answer: AB

Explanation:
TLV advertises a single type of information such as its device ID, type or management addresses.

NEW QUESTION 3

Which Type of ipv6 unicast ip address is reachable across the internet?

• A. Unique Local
• B. Compatible
• C. Link local
• D. Globa

Answer: D

NEW QUESTION 4

Under which circumstance is a router on a stick most appropriate?

• A. When the router must route a single across multiple physical links.
• B. When the router must route multiple subnets across multiple physical links.
• C. When the router must route a single across single physical links.
• D. When the router must route multiple subnets across single physical links.

Answer: D

NEW QUESTION 5

Which two statements describe the IP address 10.16.3.65/23? (Choose two.)

• A. The subnet address is 10.16.3.0 255.255.254.0.
• B. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.
• C. The last valid host address in the subnet is 10.16.2.254 255.255.254.0
• D. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.
• E. The network is not subnetted.

Answer: BD

Explanation:
The mask 255.255.254.0 (/23) used with a Class A address means that there are 15 subnet bits and 9 host bits. The block size in the third octet is 2 (256 - 254). So this makes the subnets in 0, 2, 4, 6, etc., all the way to 254. The host 10.16.3.65 is in the 2.0 subnet. The next subnet is 4.0, so the broadcast address for the 2.0 subnet is 3.255. The valid host addresses are 2.1 through 3.254

NEW QUESTION 6

Which two security appliances will you use in a network? (Choose two.)

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

Answer: BE

NEW QUESTION 7

Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?

• A. dual stack XX
• B. dynamic
• C. Teredo
• D. Manual 6to4

Answer: C

NEW QUESTION 8

Refer to the exhibit.

A host is connected to switch port fa0/3. The host and switch have been fully configured for IP connectivity as shown. However, the indicator LED on switch port fa0/3 is not on, and the host cannot communicate with any other hosts including those connected to VLAN 2 on the same switch. Based on the given information, what is the problem?

• A. switch port fa0/3 is not configured as a trunk port
• B. there is a bad cable
• C. the switch has been assigned an incorrect subnet mask
• D. switch port fa0/3 has been blocked by STP
• E. the switch and the host must be in the same subnet

Answer: B

NEW QUESTION 9

Refer to the exhibit. Which statement is correct regarding the results shown for the show interface s0/0/0 command?

• A. The subnet mask for this interface is 255.255.255.248.
• B. The subnet mask for this interface is 255.255.255.252.
• C. The IP address that is configured on s0/0/0 is a public address.
• D. This interface can be enabled by issuing a no shutdown command.
• E. The default encapsulation protocol for a Cisco serial interface is PPP.

Answer: D

NEW QUESTION 10

Which statement describes the effect of the exec-timeout 30 command?

• A. The router maintains a user session indefinitely after it is active for 30 seconds.
• B. The router disconnects the user session if it is inactive for 30 minutes.
• C. The router maintains a user session indefinitely after it is active for 30 minutes.
• D. The router disconnects a user session if it is inactive for 30 seconds.

Answer: B

NEW QUESTION 11

Which two statements about Ethernet frame formats are true? (Choose two.)

• A. The FCS is appended to the VLAN tag.
• B. The receiving MAC always recalculates the FCS.
• C. The VLAN tag precedes the Length/Type field.
• D. The second bit in the Destination Address field indicates whether the address is an individual or group address.
• E. The first bit in the Destination Address field determines whether the address is handled globally or locally.
• F. The preamble checks the FCS to identify the start and end of a packet.

Answer: BC

NEW QUESTION 12

Which counter indicates the total number of frames that a switch port failed to transmit?

• A. frame
• B. collisions
• C. output errors
• D. packet outputs

Answer: C

NEW QUESTION 13

Refer to the exhibit.

If the resume command is entered after the sequence that is shown in the exhibit, which router prompt will be displayed?

• A. Router1>
• B. Router1#
• C. Router2>
• D. Router2#

Answer: C

Explanation:
After resuming the telnet session by using the Enter key after it has been suspended, it will resume back to the telnet session so it will be back to the router2> prompt.

NEW QUESTION 14

Which two management protocols operate over TCP? (Choose two)

• A. FTP
• B. CDP
• C. SNMP
• D. SCP
• E. TFTP
• F. NTP

Answer: AC

NEW QUESTION 15

For which two protocols can PortFast alleviate potential host startup issues? (Choose two.)

• A. DHCP
• B. DNS
• C. OSPF
• D. RIP
• E. CDP

Answer: AE

NEW QUESTION 16

Which two syslog configuration commands do you use to log warnings to the syslog server? (Choose two.)

• A. logging trap level alerts
• B. logging trap level notice
• C. logging trap level error
• D. logging trap level informational
• E. logging trap level critical

Answer: AD

NEW QUESTION 17

Which NAT command can be applied to an interface?

• A. ip nat inside
• B. ip nat inside test access-list-number pool pool-name
• C. ip nat inside source static 10.10.10.0 10.10.10.50
• D. ip nat pool test 10.10.10.0 10.10.10.50 255.255.255.0

Answer: D

NEW QUESTION 18

Refer to the exhibit.

A network administrator is troubleshooting a connectivity problem on the serial interfaces. The output from the show interfaces command on both routers shows that the serial interface is up, line protocol is down. Given the partial output for the show running-config in the exhibit, what is the most likely cause of this problem?

• A. The serial cable is bad.
• B. The MTU is incorrectly configured.
• C. The Layer 2 framing is misconfigured.
• D. The IP addresses are not in the same subnet.

Answer: C

Explanation:
Here we see that Rtr3 is configured to use PPP encapsulation, but Rtr1 has not been configured for any kind of encapsulation. The default on Cisco router serial interfaces is HDLC, not PPP, so there is an encapsulation mismatch.

NEW QUESTION 19

How many primary ipv4 addresses can be assigned on a router interface?

• A. 1
• B. 4
• C. Unlimited

Answer: B

Explanation:
Cisco
IOS software supports multiple IP addresses per interface. You can specify an unlimited number of secondary addresses but only one primary one. Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2/ip/configuration/guide/fipr_c/1cfipadr.html

NEW QUESTION 20

For which reason is a DHCP client unable to reach a host in a different subnet?

• A. DNS lookup has been disabled on the gateway router.
• B. The client is connected to a switch in the same VLAN as its gateway router.
• C. The client has been configured with only one DNS server.
• D. The client and its gateway router have been assigned different subnet masks.

Answer: D

NEW QUESTION 21

A host is attempting to communicate with a server from an application layer. The connection has failed, what would be the first layer to start from the troubleshooting standpoint?

• A. network
• B. Application
• C. physical
• D. session

Answer: C

NEW QUESTION 22

Which feature allows the network administrator to view the hardware of a Cisco peer device connected to an interface?

• A. RIP
• B. CDP
• C. VTP
• D. STP

Answer: B

NEW QUESTION 23

Which statement about 6to4 tunneling is true?

• A. One tunnel endpoint must be configured with IPv4 only
• B. It establishes a point-to-point tunnel
• C. Both tunnel endpoints must be configured with IPv4 only
• D. Both tunnel endpoints must support IPv4 and IPv6

Answer: D

NEW QUESTION 24

Which statement is true about static and dynamic routing?

• A. Only static routes are shared between connected interfaces
• B. Dynamic routing is more scalable than static routing
• C. Only dynamic routes are secure
• D. Static routing is easier to maintain in a large network than dynamic routing.

Answer: B

NEW QUESTION 25
CORRECT TEXT
This topology contains 3 routers and 1 switch. Complete the topology.
Drag the appropriate device icons to the labeled Device
Drag the appropriate connections to the locations labeled Connections. Drag the appropriate IP addresses to the locations labeled IP address
(Hint: use the given host addresses and Main router information) To remove a device or connection, drag it away from the topology.
Use information gathered from the Main router to complete the configuration of any additional routers.
No passwords are required to access the Main router. The config terminal command has been disabled for the HQ router. The router does not require any configuration.

Configure each additional router with the following:
Configure the interfaces with the correct IP address and enable the interfaces. Set the password to allow console access to consolepw
Set the password to allow telnet access to telnetpw
Set the password to allow privilege mode access to privpw
Not E: Because routes are not being added to the configurations, you will not be able to ping through the internetwork.
All devices have cable autosensing capabilities disabled. All hosts are PC’s

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
Specify appropriate devices and drag them on the "Device" boxes
For the device at the bottom-right box, we notice that it has 2 interfaces Fa0/2 and Fa0/4; moreover the link connects the PC on the right with the device on the bottom-right is a straight-through link -> it is a switch
The question stated that this topology contains 3 routers and 1 switch -> two other devices are routers
Place them on appropriate locations as following:
(Host D and host E will be automatically added after placing two routers. Click on them to access neighboring routers)
Specify appropriate connections between these devices:
+ The router on the left is connected with the Main router through FastEthernet interfaces: use a crossover cable
+ The router on the right is connected with the Main router through Serial interfaces: use a serial cable
+ The router on the right and the Switch: use a straight-through cable
+ The router on the left and the computer: use a crossover cable
(To remember which type of cable you should use, follow these tips:
- To connect two serial interfaces of 2 routers we use serial cable
- To specify when we use crossover cable or straight-through cable, we should remember:
Group 1: Router, Host, Server
Group 2: Hub, Switch
One device in group 1 + One device in group 2: use straight-through cable
Two devices in the same group: use crossover cable
For example, we use straight-through cable to connect switch to router, switch to host, hub to host, hub to server... and we use crossover cable to connect switch to switch, switch to hub, router to router, host to host.)
Assign appropriate IP addresses for interfaces:
From Main router, use show running-config command.
(Notice that you may see different IP addresses in the real CCNA exam, the ones shown above are just used for demonstration)
From the output we learned that the ip address of Fa0/0 interface of the Main router is 192.168.152.177/28. This address belongs to a subnetwork which has:
Increment: 16 (/28 = 255.255.255.240 or 1111 1111.1111 1111.1111 1111.1111 0000)
Network address: 192.168.152.176 (because 176 = 16 * 11 and 176 < 177)
Broadcast address: 192.168.152.191 (because 191 = 176 + 16 - 1)
And we can pick up an ip address from the list that belongs to this subnetwork:
192.168.152.190 and assign it to the Fa0/0 interface the router on the left
Use the same method for interface Serial0/0 with an ip address of 192.168.152.161 Increment: 16
Network address: 192.168.152.160 (because 160 = 16 * 10 and 160 < 161)
Broadcast address: 192.168.152.175 (because 176 = 160 + 16 - 1)
-> and we choose 192.168.152.174 for Serial0/0 interface of the router on the right Interface Fa0/1 of the router on the left
IP (of the computer on the left) : 192.168.152.129/28 Increment: 16
Network address: 192.168.152.128 (because 128 = 16 * 8 and 128 < 129)
Broadcast address: 192.168.152.143 (because 143 = 128 + 16 - 1)
-> we choose 192.168.152.142 from the list Interface Fa0/0 of the router on the right
IP (of the computer on the left) : 192.168.152.225/28 Increment: 16
Network address: 192.168.152.224 (because 224 = 16 * 14 and 224 < 225)
Broadcast address: 192.168.152.239 (because 239 = 224 + 16 - 1)
-> we choose 192.168.152.238 from the list
Let's have a look at the picture below to summarize
Configure two routers on the left and right with these commands: Router1 = router on the left
Assign appropriate IP addresses to Fa0/0 & Fa0/1 interfaces: Router1>enable
Router1#configure terminal Router1(config)#interface fa0/0
Router1(config-if)#ip address 192.168.152.190 255.255.255.240 Router1(config-if)#no shutdown
Router1(config-if)#interface fa0/1
Router1(config-if)#ip address 192.168.152.142 255.255.255.240 Router1(config-if)#no shutdown
Set passwords (configure on two routers)
+ Console password: Router1(config-if)#exit Router1(config)#line console 0
Router1(config-line)#password consolepw Router1(config-line)#login
Router1(config-line)#exit
+ Telnet password: Router1(config)#line vty 0 4 Router1(config-line)#password telnetpw Router1(config-line)#login Router1(config-line)#exit
+ Privilege mode password: Router1(config)#enable password privpw Save the configuration: Router1(config)#exit
Router1#copy running-config startup-config
Configure IP addresses of Router2 (router on the right) Router2>enable
Router2#configure terminal Router2(config)#interface fa0/0
Router2(config-if)#ip address 192.168.152.238 255.255.255.240 Router2(config-if)#no shutdown
Router2(config-if)#interface serial0/0
Router2(config-if)#ip address 192.168.152.174 255.255.255.240 Router2(config-if)#no shutdown
Then set the console, telnet and privilege mode passwords for Router2 as we did for Router1, remember to save the configuration when you finished.

NEW QUESTION 26
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