Which purpose does a northbound API serve in a controller-based networking architecture?
Acommunicates between the controller and the physical network hardware
Breports device errors to a controller
Cgenerates statistics for network hardware and traffic
Dfacilitates communication between the controller and the applications
Correct Answer:D
Q259(none)
The OSPF Hello protocol performs which of the following tasks? (Choose two.)
Choose 2 — select all that apply
AIt provides dynamic neighbor discovery.
BIt detects unreachable neighbors in 90 second intervals.
CIt maintains neighbor relationships.
DIt negotiates correctness parameters between neighboring interfaces.
EIt uses timers to elect the router with the fastest links as the designated router. F. It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF.
Correct Answer:AC
Q260(none)
What are two reasons a network administrator would use CDP? (Choose two.) A. to verify the type of cable interconnecting two devices
Choose 2 — select all that apply
Bto determine the status of network services on a remote device
Cto obtain VLAN information from directly connected switches
Dto verify Layer 2 connectivity between two devices when Layer 3 fails
Eto obtain the IP address of a connected device in order to telnet to the device F. to determine the status of the routing protocols between directly connected routers
Correct Answer:DE
Q261(none)
Refer to the exhibit. An administrator is tasked with configuring a voice VLAN. What is the expected outcome when a Cisco phone is connected to the GigabitEthernet 3/1/4 port on a switch?
AThe phone and a workstation that is connected to the phone do not have VLAN connectivity.
BThe phone sends and receives data in VLAN 50, but a workstation connected to the phone sends and receives data in VLAN 1.
CThe phone sends and receives data in VLAN 50, but a workstation connected to the phone has no VLAN connected.
DThe phone and a workstation that is connected to the phone send and receive data in VLAN 50.
Correct Answer:B
Q262(none)
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
Choose 2 — select all that apply
BR2(config)# interface gi0/0 R2(config-if)# ip helper-address 198.51.100.100
CR1(config)# interface fa0/0 R1(config-if)# ip address dhcp R1(config-if)# no shutdown
DR2(config)# interface gi0/0 R2(config-if)# ip address dhcp
ER1(config)# interface fa0/0 R1(config-if)# ip helper-address 192.0.2.2
Correct Answer:BC
Q263(none)
Refer to the exhibit. What commands are needed to add a subinterface to Ethernet0/0 on R1 to allow for VLAN 20, with IP address 10.20.20.1/24?
On a corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?
Aa router with subinterfaces configured on the physical interface that is connected to the switch
Ba router with an IP address on the physical interface connected to the switch
Ca switch with an access link that is configured between the switches
Da switch with a trunk link that is configured between the switches
Correct Answer:A
Different VLANs can’t communicate with each other , they can communicate with the help of Layer3 router. Hence , it is needed to connect a router to a switch , then make the sub-interface on the router to connect to the switch, establishing Trunking links to achieve communications of devices which belong to different VLANs.
Q265(none)
Which command can you enter to determine the addresses that have been assigned on a DHCP Server?
AShow ip DHCP database.
BShow ip DHCP pool.
CShow ip DHCP binding.
DShow ip DHCP server statistic.
Correct Answer:C
Q266(none)
Refer to the exhibit. If the network environment is operating normally, which type of device must be connected to interface FastEthernet 0/1?
ADHCP client
Baccess point
Crouter
DPC
Correct Answer:C
Q267(none)
Refer to the exhibit. What configuration on RTR-1 denies SSH access from PC-1 to any RTR-1 interface and allows all other traffic?
Aaccess-list 100 deny tcp host 172.16.1.33 any eq 22 access-list 100 permit ip any any interface GigabitEthernet0/0 ip access-group 100 in
Baccess-list 100 deny tcp host 172.16.1.33 any eq 22 access-list 100 permit ip any any line vty 0 15 access-class 100 in
Caccess-list 100 deny tcp host 172.16.1.33 any eq 23 access-list 100 permit ip any any interface Gigabit Ethernet0/0 ip access-group 100 in
Daccess-list 100 deny tcp host 172.16.1.33 any eq 23 access-list 100 permit ip any any line vty 0 15 access-class 100 in
