The connection between an access and distribution is over utilized. Which should a network engineer use to increase bandwidth between the switches?, CDMA, 802.11ax, LACP, Flow control, For redundancy purposes (- резервування, відмовостійкість, є два або більше маршрутизаторів) a network engineer installs a new router and enables a load balancing protocol. What type of address should he assign as a default gateway to end devices?, Loopback, IPv6, APIPA, Virtual IP, Which is used with multimode fiber?, RJ45, 10 block, F-type, SFP (Small Form-factor Pluggable), A company has a Dynamic Host Configuration Protocol (DHCP) server with all of the subnet addresses specified as an IP address scope. The company deploys a new physical server as a database server in the 192.168.4.0/24 subnet. Applications that use the database server require the server to always have the same IP address. Company policy forbids the use of static addressing. What should the company do to set the addressing for the database server?, Use an APIPA address., Specify an IP address exclusion., Configure an IP address reservation., Use a virtual IP (VIP) address., A network engineer has installed three gigabit switches. The switches will provide access to NAS devices for end users. What should the engineer configure to avoid a bottleneck in the network with big file transfers?, VRRP, Port security, QoS policy, Trunks with port aggregation, HSRP, FTP with SSH, A technician has established a plan of action to resolve a problem on a network switch. The solution has been tested in a lab environment, and the technician has a list of commands to execute. After logging into the device, the technician realizes that the TACACS server blocks the commands they have to implement. What should the technician do? (tip- проблема в правах доступу (authorization)., Try alternative commands and scripts., Assign the task to another person or department., Document the findings and close the ticket., Reload the switch and try again., Network devices in one area of the office building experience communication problems. A cable tester shows that the signal on the RX pair is lower than expected. What is this an indication of?, Electromagnetic interference (EMI), Latency, Crosstalk, Attenuation, What is the role of an MIB when implementing SNMP for network management? MIB (Management Information Base) — це віртуальна ієрархічна база даних, яка діє як «словник» або «інструкція» для протоколу SNMP., It is a collection of manageable device definitions that identifies device property information., It provides the method for authentication and encryption of messages used for device management., It is a server configured to collect device information and issue command requests., It is the software package installed on each managed client., A network administrator has been tasked with deploying a new wireless LAN controller. Which protocol is recommended for integrity checking and encryption?, SHA512 with AES, AES-based CCMP, PSK-TKIP, TLS, IPsec, A network administrator has been tasked with deploying a new wireless LAN controller. Which protocol is recommended for integrity checking and encryption?, TLS, AES-based CCMP, IPsec, PSK-TKIP, SHA512 with AES, A large organization has offices in several locations around the world. Each geographic location has primary responsibility for its network administration and management. The company wants to ensure consistent instructions and management throughout the company. What should the company use to help ensure this?, Standard operating procedures (SOP), Network configuration baselines, SLA, AUP, Change management, A company contracts with a cloud provider. The cloud provider is responsible for virtualized hardware, storage, and network support. The company is responsible for installing, licensing, and maintaining the operating system and server applications. Which type of service does this describe?, SaaS, SECaaS, IaaS, PaaS, An alert indicates the loss of connectivity with a router. The log shows the following line: EGP: Sending 19 bytes keepalive to 11.17.2.1 (External AS 1471) Failed, Neighbor down. TCP/179. Which routing protocol should be investigated?, RIP, EIGRP, BGP, OSPF, A company wants to open a new office. A wireless site survey reveals that there are 12 access points in the area immediately around the office and that they use channels 1, 6, and 11 (➡️ 2.4 GHz). What should the company do to address the interference problem?, Use the 5 GHz band., Configure channel bonding at 2.4 GHz., Implement 802.1X., Install an omnidirectional antenna., An organization upgrades the network cabling in some of its buildings from copper to fiber optic. However, a network administrator is concerned that some of the cabling may be faulty. What should the administrator monitor FIRST to determine if their concern is valid? (tip- CRC (Cyclic Redundancy Check) перевіряє, чи не пошкодився кадр під час передачі))., An increased number of CRC errors, An increase in MTU mismatch errors, An increased number of failed DNS queries, An increase in improperly routed packets, What change should be made to improve wireless performance and reduce interference?, Uninstall AP2 and move AP1 to the center of the room., Move both APs to the center of the room., Change AP1 to channel 3., Change the SSID for AP2 to OfficeAP2., Change AP2 to channel 6., During a DDoS attack, a technician is unable to access a critical router. What should the technician do to prevent this issue in the future? (tip- Out-of-Band (OOB) Management — окремий канал керування, який не залежить від основної мережі)., Place the router in a screened subnet., Implement out-of-band management., Require multifactor authentication., Deploy an IDS on the router network., A NIDS reports several attempts to download files from an external IP address. The Technical Services department determines that the source is a website that is made to look like a site from which network users download reference materials and blank PDF forms. Users enter the correct URL for the website but are being sent to a different IP address. Which type of attack is this?, Evil twin, VLAN hopping, ARP poisoning, DNS poisoning, Which routing protocol requires each node to build a complete network map?, OSPF, RIP, EIGRP, BGP, A systems administrator cannot ping a file server running Windows Server. Users can access files on the server without any problems. What should the administrator check?, NTFS permissions, TCP/IP settings, ARP cache, Local firewall rules, A network consultant determines that a company can improve its performance by implementing jumbo frames (MTU 9000). The network is configured with 10/100/1000 switches, and all hosts are configured with Gigabit Ethernet network adapters. The network is wired with Cat 5e UTP cable. What must the company do to support jumbo frames?, Configure each switchport in dynamic auto mode., Enable STP on all switches., Replace the cable with Cat 6 UTP., Increase the MTU to 9000., A technician attempts to install a device that requires Power over Ethernet. However, the device will not power on. The technician has verified that the device is functional and suspects that the upstream switch is not providing enough power. The device requires a port that supports a maximum power of 100 watts. What should the technician do to ensure that the device functions properly while optimizing power usage?, Verify that the switch supports Type 4 PoE++., Verify that the switch supports PoE+., Verify that the switch supports Type 1 PoE., Verify that the switch supports IEEE 802.3bt Type 3., An organization plans to deploy WAPs in all its offices. Due to cost constraints, some mounting locations will only be reachable using Cat 6a cabling. Which of the following should the organization also plan to deploy to ensure that WAPs function properly?, 802.1Q, LACP, PoE+, STP, PC1 fails to receive an IP address in the network shown in the exhibit. What should be configured to fix the problem?, DHCP option 66 on Router 1, Port forwarding on Router 1, IP helper address on Router 2, Conditional forwarder on Router 2, IP helper address on Router 1, Conditional forwarder on Router 1, A technician has configured a new SSID on an access point using the 5 GHz frequency. He has connected to it with a mobile phone. A test laptop is unable to show the new SSID in the list of available networks. What is the MOST likely reason for that?, There is a pre-shared key mismatch between the access point and the laptop., The laptop has a driver issue., The laptop has a single-band wireless card., There is an issue with the access point., Не бачить SSID → проблема сумісності або радіомодуля (наприклад, лише 2.4 GHz). Бачить SSID, але не підключається → проблема з паролем, шифруванням або автентифікацією., (наприклад, лише 2.4 GHz), проблема з паролем, Which device would be used to distribute user requests across all servers in a farm?, DNS server, Firewall, Load balancer, Proxy server, A company wants to deploy a new WLAN topology without running new electrical wiring. The solution has to support the 5GHz band, MU-MIMO, and offer speeds of at least 2100 Mbps. The company wants to use a PoE solution providing at least 25W of power for a connected device. Which two components should be used? (Choose two.), A switch supporting the 802.3at standard, An access point supporting the 802.11n standard, A switch supporting the 802.3af standard, An access point supporting the 802.11ac Wave 2 standard, An access point supporting the 802.11ac Wave 1 standard, A switch supporting the 802.1X standard, Users complain that as they walk from one location to another in an office complex, they lose wireless connectivity. What should a network administrator do to troubleshoot this issue?, Ensure a low signal-to-noise ratio, Configure unique SSIDs per WAP, Architect overlapping wireless cells, Increase WAP transmit power, Users report that they have lost access to a network shared drive. They open a new help ticket and expect a quick resolution to the problem. What should a technician do next?, Escalate the issue to the server team., Check and replace the cabling in the communications room., Reboot the servers., Gather more information from users., A junior network engineer receives a new router to configure. Which two configuration tasks should the engineer perform BEFORE he copies a standard configuration template onto the router? (Choose two.), Change the MAC address, Update the firmware, Change the default username and password, Clear the routing table, Create an ACL, What are the implications of allowing inbound port 3389 on a NAT gateway? (Якщо відкрити 3389 назовні через NAT (Port Forwarding): комп'ютер стає доступним з Інтернету...), Network switches will be directly accessible from the internet., Unencrypted communications will allow passwords to be sniffed., Attackers can attempt brute force attacks on user desktops., Out-of-band device management will be easier to perform., While discussing a configuration issue with a switch manufacturer’s technical support team, the in-house support team learns of a switch vulnerability. The vulnerability was fixed with a recent update. The support team needs to mitigate the vulnerability and avoid a potential attack with minimum risk to the network, downtime, and cost. What should in-house support do?, Deploy an IDS to closely monitor activity with the switch., Purchase a new switch that has the vulnerability fixed to replace the existing switch., Order new firmware chips and remove and replace the firmware., Download and install the most recent firmware update., An organization deploys IoT sensors at a remote location that is not reachable using traditional cabled internet services. Which technology should the organization deploy to provide the highest bandwidth available for this location?, DSL, 4G, Satellite, 5G, In a multi-tier networking architecture, where is VLAN routing MOST likely to occur?, Edge, Distribution, Access, Top-of-rack, A company has its own communications rooms and an on-premises data center containing all its servers and network devices. A network engineer wants to add some cloud on-demand solutions to the existing infrastructure. Which cloud model should the company use?, Public, CASB, Hybrid, Private, The nslookup command fails and shows the error in the exhibit. What should the support team create to fix the problem?, CNAME record, TXT record, Static route entry, APIPA address, Reverse lookup zone, While discussing a configuration issue with a switch manufacturer's technical support team, the in-house support team learns of a switch vulnerability. The vulnerability was fixed with a recent update. The support team needs to mitigate the vulnerability and avoid a potential attack with minimum risk to the network, downtime, and cost. What should in-house support do?, Purchase a new switch that has the vulnerability fixed to replace the existing switch., Download and install the most recent firmware update., Deploy an IDS to closely monitor activity with the switch., Order new firmware chips and remove and replace the firmware., A medium-sized company is moving into a new office space. The office is being prewired with Cat 6 cabling. Employees will be moving their own equipment and will need to connect into the network. Technical Services wants to help ensure that the move goes as smoothly as possible. What should Technical Services use to ensure this?, Logical network diagram, Work instructions, Physical network diagram, Labeling, A company opens new warehouse space on its company campus. Network wiring for the warehouse is routed through a 110 punch block and patch panel. Wiring out to devices uses Cat 5e UTP cable. Several devices in the warehouse experience communication problems. After extensive testing, the problem is determined to be crosstalk. The company needs to correct the problem. Infrastructure changes should be kept to a minimum. What should the company do?, Replace the failing cables with Cat 5e STP cables., Replace all cabling with fiber optic cable., Replace the 110 punchdown block with a 66 punchdown block., Replace the failing cables with Cat 6 cables., Computers on the 192.168.1.0 subnet are unable to resolve host names in other subnets but can access resources by IP address. Computers on other subnets are not experiencing this problem. What is the most likely cause? DNS - порт 53 (UDP/TCP)., Port 53 is blocked on the 192.168.1.129 interface., The 192.168.1.1 interface is failing., Port 53 is blocked on the 192.168.1.1 interface., The DNS server is failing., The network support team needs to determine whether data is being encrypted when it is sent over the network. Which process should the team use?, Port scanning, Log review, Packet analysis, Vulnerability scanning, A network administrator connects all top-of-rack switches using a mesh architecture. (Spanning Tree Protocol) Which of the following is required for error-free operations in this environment?, PoE, LACP, VLANs, STP, Mesh означає, що комутатори мають багато резервних з'єднань між собою. Це створює ризик мережевих петель (switching loops). Щоб цього не сталося, потрібен: STP (Spanning Tree Protocol). STP:, знаходить петлі;, залишає лише один активний шлях;, блокує зайві (резервні) лінки;, якщо основний канал впаде — автоматично активує резервний., Навіщо потрібен STP у mesh-мережі?, Стиснути трафік, Шифрувати кадри, Прискорити DNS, Уникнути петель, Що створює ризик switching loops?, DHCP сервер, Резервні лінки, Один хост, NAT таблиця, Що робить STP спочатку?, Знаходить петлі, Видає IP, Маршрутизує VLAN, Шифрує трафік, Що STP робить із зайвими лінками?, Подвоює їх, Змінює MAC, Блокує їх, Видаляє VLAN, Скільки активних шляхів залишає STP між комутаторами?, Жодного шляху, Усі шляхи, Три шляхи, Один шлях, Що станеться, якщо основний канал впаде?, Зникне VLAN, Увімкнеться резервний, Скинеться порт, Вимкнеться STP, Що означає STP?, Secure Trunk Port, Switch Transfer Path, Spanning Tree Protocol, Shared Traffic Protocol, Яка топологія часто має багато резервних з'єднань?, Mesh, Bus, Ring, Point-to-point, Яка головна мета STP?, Безпетлева мережа, Більше підмереж, Менше паролів, Швидший DHCP, Що потрібно в мережі з багатьма резервними з'єднаннями між комутаторами?, NTP, STP, ARP, FTP, A company wants to deploy a web server in a new DMZ. Which device should the company use to configure a new network zone and Layer 7 filtering policies?, Hub, Switch, Web proxy, Firewall, A network technician troubleshoots connectivity to a server. The technician needs to determine if a connection from a client is active as well as the port being used for the connection. Which tool should the technician use?, netstat, tracert, arp, route, PC1 is unable to access the Internet in the network shown in the exhibit. What is the MOST likely cause?, A duplicate IP address, An expired IP address, An invalid static IP address, A rogue DHCP server, In a multi-tier networking architecture, where is VLAN routing MOST likely to occur?, Edge, Distribution, Access, Top-of-rack, A network technician must ensure that nodes can send traps when performance thresholds are breached. Which solution BEST meets this requirement?, Configure a syslog server and forward syslog information from nodes., Configure network nodes to synchronize with a centralized NTP server., Install IDS software on each network node and define performance alerts., Deploy an SNMP management system and configure agents on nodes., A company deploys a new computer. When the cable to the computer is plugged in at the switch, the network link LED does not light. When the cable is plugged into a different open port, the LED lights up. When plugged back into the original port, the LED does not light. What is the most likely problem?, Duplicate IP address, VLAN mismatch, Incorrect cable type, Bad computer network adapter, Bad port, A network administrator connects finance and marketing PCs to the same Layer 2 switch. The administrator must ensure that marketing PCs do not communicate with finance PCs. Which is the BEST solution the administrator should deploy?, Disable STP., Define data VLANs., Configure a screened subnet., Deploy an IPS.

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