Topic 2, Exam B
Refer to the exhibit.
Which prefix does Router 1 use for traffic to Host A?
A. 10.10.10.0/28
B. 10.10.13.0/25
C. 10.10.13.144/28
D. 10.10.13.208/29
Explanation:
Host A address fall within the address range. However, if more than oner oute to the same subnet exist (router will use the longest stick match, which match mores pecific route to the subnet). If there are route 10.10.13.192/26 and 10.10.13.208/29, the router will forward the packet to /29 rather than /28.
Refer to the exhibit
An engineer deploys a topology in which R1 obtains its IP configuration from DHCP. If the switch and DHCP server configurations are complete and correct. Which two sets of commands must be configured on R1 and R2 to complete the task? (Choose two)
A. R1(config)# interface fa0/0
R1(config-if)# ip helper-address 198.51.100.100
B. R2(config)# interface gi0/0
R2(config-if)# ip helper-address 198.51.100.100
C. R1(config)# interface fa0/0
R1(config-if)# ip address dhcp
R1(config-if)# no shutdown
D. R2(config)# interface gi0/0
R2(config-if)# ip address dhcp
E. R1(config)# interface fa0/0
R1(config-if)# ip helper-address 192.0.2.2
Refer to the exhibit.
A network administrator has been tasked with securing VTY access to a router Which access-list entry accomplishes this task?
A. access-list 101 permit tcp 10.1.10 0.0.0.255 172.16.10 0.0.0.255 eq ssh
B. access-list 101 permit tcp 10.11.0 0.0.0.255 172.16.10 0.0.0.255 eq scp
C. access-list 101 permit tcp 10.11.0 0.0.0.255 172.16.10 0.0.0.255 eq telnet
D. access-list 101 permit tcp 10.1.10 0.0.0.255 172.16.10 0.0.0.255 eq https
When OSPF learns multiple paths to a network, how does it select a route?
A. It multiple the active K value by 256 to calculate the route with the lowest metric.
B. For each existing interface, it adds the metric from the source router to the destination to calculate the route with the lowest bandwidth.
C. It divides a reference bandwidth of 100 Mbps by the actual bandwidth of the existing interface to calculate the router with the lowest cost.
D. It count the number of hops between the source router and the destination to determine the router with the lowest metric
Refer to the exhibit.
Only four switches are participating in the VLAN spanning-tree process.
Branch-1 priority 614440 Branch-2: priority 39082416
Branch-3: priority 0
Branch-4: root primary Which switch becomes the permanent root bridge for VLAN 5?
A. Branch-1
B. Branch-2
C. Branch-3
D. Branch-4
Explanation:
Dynamic ARP inspection is an ingress security feature; it does not perform any egress checking.
Refer to the exhibit.
A. Option A
B. Option B
C. Option C
D. Option D
What is the primary different between AAA authentication and authorization?
A. Authentication verifies a username and password, and authorization handles the communication between the authentication agent and the user database.
B. Authentication identifies a user who is attempting to access a system, and authorization validates the users password
C. Authentication identifies and verifies a user who is attempting to access a system, and authorization controls the tasks the user can perform.
D. Authentication controls the system processes a user can access and authorization logs the activities the user initiates
Explanation:
AAA stands for Authentication, Authorization and Accounting.
+ Authentication: Specify who you are (usually via login username & password)
+ Authorization: Specify what actions you can do, what resource you can access
+ Accounting: Monitor what you do, how long you do it (can be used for billing and auditing)An example of AAA is shown below:
+ Authentication: “I am a normal user. My username/password is user_tom/learnforever”
+ Authorization: “user_tom can access LearnCCNA server via HTTP and FTP”+ Accounting: “user_tom accessed LearnCCNA
server for 2 hours”. This user only uses “show” commands
An engineer must configure an OSPF neighbor relationship between router R1 and R3 The authentication configuration has been configured and the connecting interfaces are in the same 192.168 1.0/30 sublet. What are the next two steps to complete the configuration? (Choose two.)
A. configure the hello and dead timers to match on both sides
B. configure the same process ID for the router OSPF process
C. configure the same router ID on both routing processes
D. Configure the interfaces as OSPF active on both sides.
E. configure both interfaces with the same area ID
An organization secures its network with multi-factor authentication using an authenticator app on employee smartphone. How is the application secured in the case of a user’s smartphone being lost or stolen?
A. The application requires an administrator password to reactivate after a configured Interval.
B. The application requires the user to enter a PIN before it provides the second factor.
C. The application challenges a user by requiring an administrator password to reactivate when the smartphone is rebooted.
D. The application verifies that the user is in a specific location before it provides the second factor.
What is a function of a Layer 3 switch?
A. move frames between endpoints limited to IP addresses
B. transmit broadcast traffic when operating in Layer 3 mode exclusively
C. forward Ethernet frames between VLANs using only MAC addresses
D. flood broadcast traffic within a VLAN
Where does wireless authentication happen?
A. SSID
B. radio
C. band
D. Layer 2
which IPv6 address block forwards packets to a multicast address rather than a unicast address?
A. 2000::/3
B. FC00::/7
C. FE80::/10
D. FF00::/12
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