Tüm alıştırma soruları

A company operates several branch offices connected to a main data center where a centralized Wireless LAN Controller (WLC) resides. Following a WAN link outage at one branch, local wireless users at that site can still access local printers and file servers, even though their CAPWAP control connection to the WLC is temporarily down. Which operational mode must be configured on the branch lightweight access points (LAPs) to support local data switching when WLC reachability is lost?

A technician connects two legacy switch ports directly to each other using a standard straight-through Ethernet cable. Neither port supports Automatic Medium-Dependent Interface Crossover (Auto-MDIX). Running a status check on the local switch port yields the following CLI output:

text
FastEthernet0/1 is down, line protocol is down
Hardware is FastEthernet, address is 000d.bd2c.4a01 (bia 000d.bd2c.4a01)
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set

Which physical cabling issue is the direct cause of the interface remaining in a down/down state?

A network architect is designing a high-density Wi-Fi deployment across an enterprise facility with reinforced concrete walls and heavy multipath interference. During site survey planning, the architect must select between using 2.4 GHz channels ($1$, $6$, $11$) and 5 GHz channels ($36$, $40$, $44$, $48$) for coverage while maintaining non-overlapping channel designs and minimizing free-space path loss and attenuation. Which statement accurately reflects the physical radio frequency (RF) propagation characteristics and channel planning constraints between these two frequency bands in this scenario?

An enterprise data center infrastructure deploys virtualized server hosts running Type 1 hypervisors. On a single physical host, multiple Virtual Machines (VMs) belong to different VLANs. Network monitoring reveals that intra-VLAN frame delivery between VMs on the host occurs locally without utilizing physical switch bandwidth, whereas inter-VLAN traffic between VMs on the same host must be forwarded out to an external Layer 3 gateway device. Which component operating within the hypervisor framework is responsible for performing local Layer 2 frame forwarding while enforcing VLAN isolation on the host?

A network engineer is configuring a static route on router R1 to reach remote network $2001:\text{db8}:\text{c0ff}:20::/64$. The engineer intends to forward traffic to the neighboring router using its link-local address $\text{fe80}::215:c5ff:\text{feab}:3102$ through R1's local interface GigabitEthernet0/0/1. Which Cisco IOS command successfully accomplishes this configuration?

A network engineer is configuring interface IP addresses on a core layer switch for an internal corporate segment. Company policy strictly dictates that all internal devices must use RFC 1918 private IPv4 addresses and that addresses must be usable host assignments. Which of the following IP address and subnet mask combinations represents a valid, usable host address located strictly within the upper boundary limit of the RFC 1918 Class B private address space?

A network engineer initializes OSPFv2 process 10 on router R-HQ. The router interfaces are configured as follows:

- Loopback 0: IP address 10.1.1.1/32 (Status: administratively down, Protocol: down)
- Loopback 1: IP address 192.168.50.1/32 (Status: up, Protocol: up)
- GigabitEthernet 0/0: IP address 172.16.100.254/24 (Status: up, Protocol: up)
- GigabitEthernet 0/1: IP address 10.254.254.254/30 (Status: up, Protocol: up)

No manual router ID is configured under `router ospf 10`. When the OSPF process starts, which IP address will be selected as the OSPF Router ID for R-HQ?

An enterprise network administrator deploys four Cisco routers (R1, R2, R3, and R4) connected to a common Layer 2 GigabitEthernet switch on the $192.168.1.0/24$ broadcast multiaccess segment. All routers are powered on simultaneously, and OSPFv2 Area 0 is initialized across all connected interfaces. The interface parameters and operational configurations are as follows:

* R1: Configured with `ip ospf priority 255` and `ip ospf network point-to-point`; Router ID is $1.1.1.1$.
* R2: Configured with default interface priority ($1$); Router ID is $10.10.10.10$ (derived from Loopback0).
* R3: Configured with `ip ospf priority 0`; Router ID is $30.30.30.30$ (derived from Loopback0).
* R4: Configured with interface priority set to $100$ (`ip ospf priority 100`); Router ID is $20.20.20.20$ (derived from Loopback0).

Assuming all routers run default OSPF timers and IP settings match, which two outcomes correctly describe the resulting OSPFv2 operational states and DR/BDR election results on this segment? (Choose two.)

A network engineer is assigned the IPv4 subnetwork block $192.168.100.0/23$ for a high-density enterprise server rack. What is the maximum number of usable host IPv4 addresses that can be assigned to active network interfaces within this subnet?

A network administrator is reviewing telemetry and alerting mechanisms across enterprise Cisco routers. Which TWO statements accurately describe the operational differences between SNMP traps and SNMP informs? (Select TWO.)

A network administrator is deploying a centralized Wireless LAN Controller (WLC) within an enterprise campus network. Which two operational functions are primary responsibilities of the WLC? (Select two.)

A network engineer is configuring a backup path on router HQ-R1 to reach the corporate subnet $172.20.40.0/22$. The primary route to this prefix is currently learned via Internal EIGRP with a default administrative distance of 90. The backup connection uses a point-to-point Ethernet link where HQ-R1 local interface GigabitEthernet0/1 is assigned IP address $198.51.100.1/30$ and the remote peer router interface is assigned $198.51.100.254/30$.

Which Cisco IOS command must be configured on HQ-R1 to ensure the static route acts as a floating backup route that only enters the routing table if the primary EIGRP route fails?

A network engineer is troubleshooting internet connectivity issues on a Cisco IOS router configured for Network Address Translation. Internal hosts on the $10.10.10.0/24$ network report that only one host can access external resources at any given time. Subsequent host traffic is dropped. The engineer inspects the router configuration and operational state using verification commands:

text
Router# show ip nat statistics
Total active translations: 1 (0 static, 1 dynamic, 1 extended)
Outside interfaces:
GigabitEthernet0/1
Inside interfaces:
GigabitEthernet0/0
Hits: 48 Misses: 12
CEF Translated packets: 48, Fast Switched packets: 0
Expired translations: 15
Dynamic mappings:
-- Inside Source
[id 1] access-list 101 pool INTERNET-POOL refcount 1
pool INTERNET-POOL: netmask 255.255.255.252
start 203.0.113.1 end 203.0.113.1
type generic, total addresses 1, allocated 1 (100%), misses 12

Router# show running-config | include ip nat
ip nat pool INTERNET-POOL 203.0.113.1 203.0.113.1 netmask 255.255.255.252
ip nat inside source list 101 pool INTERNET-POOL
access-list 101 permit ip 10.10.10.0 0.0.0.255 any

Which configuration change is required to allow all internal hosts on the $10.10.10.0/24$ network to share the single public IPv4 address simultaneously?

A network engineer is configuring static IPv4 addresses for new host interfaces within a server cluster assigned the subnetwork block $172.24.16.0/21$. Which TWO of the following IPv4 addresses are valid, usable host addresses within this subnetwork?

A network administrator configures four routers (R1, R2, R3, and R4) on a single multiaccess Ethernet segment running OSPFv2. The OSPF interface parameters are configured as follows:

- R1: OSPF Priority = 100, Router ID = 1.1.1.1
- R2: OSPF Priority = 0, Router ID = 4.4.4.4
- R3: OSPF Priority = 100, Router ID = 3.3.3.3
- R4: OSPF Priority = 50, Router ID = 2.2.2.2

All four routers boot simultaneously and form neighbor relationships. Which role will router R2 assume on this network segment?

Match each network topology architectural layer to its primary functional responsibility within an enterprise campus or data center network.

A network engineer is configuring interface GigabitEthernet1/0/10 on a Cisco Catalyst switch to connect a single end-user workstation. VLAN 75 ('FINANCE') has not yet been created in global configuration mode. The engineer enters the following CLI commands:

Switch(config)# interface gigabitethernet1/0/10
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 75

Which two statements accurately describe the resulting switch behavior and interface operation? (Select two.)

A network engineer is configuring OSPFv2 between two directly connected Cisco routers over a GigabitEthernet link. Upon inspecting the neighbor status, the engineer notes that the routers fail to form a neighbor relationship. Which TWO configuration mismatches between the interconnected interfaces will prevent these routers from establishing an OSPFv2 neighbor adjacency?

Place the criteria evaluated during an OSPFv2 Designated Router (DR) election in order of precedence, starting with the highest priority evaluation criteria first.

An enterprise network administrator is updating the SNMP monitoring configuration on a Cisco IOS XE core router to meet strict security and monitoring compliance standards. The updated policy mandates two specific requirements for outbound system event notifications sent to the central Network Management System (NMS):
1. All notifications must be encrypted using AES privacy and cryptographically authenticated using SHA.
2. Outbound notifications must require explicit application-layer acknowledgments from the NMS, causing the router to resend notification packets if no acknowledgment is received.

Which combination of SNMP protocol settings and message types must be configured on the router to fulfill both requirements?