OA Exams
What type of address should a network administrator use when setting up IPv6 router advertisements?
a) Unicastb) Multicastc) Anycastd) Broadcast
Correct Answer: b) Multicast
Explanation: IPv6 router advertisements use multicast addresses to communicate with multiple hosts on the network.
What is a potential cause of out-of-sync system clocks in virtual hosts?
a) Incorrect DNS settingsb) NTP misconfigurationc) VLAN misconfigurationd) IP address conflicts
Correct Answer: b) NTP misconfiguration
Explanation: Virtual hosts rely on accurate Network Time Protocol (NTP) configuration to maintain synchronized system clocks.
What would have the highest administrative distance?
a) RIPb) OSPFc) EIGRPd) Unknown route
Correct Answer: d) Unknown route
Explanation: Unknown routes are given the highest administrative distance, making them less preferred than known routes.
What device uses RJ-11 plugs to connect to a network?
a) Routerb) DSL modemc) Switchd) VoIP phone
Correct Answer: b) DSL modem
Explanation: DSL modems typically use RJ-11 connectors to connect to telephone lines.
Which topology connects nodes in a closed loop?
a) Starb) Meshc) Ringd) Bus
Correct Answer: c) Ring
Explanation: In a ring topology, each node is connected to its neighbor, forming a closed loop.
What network protocol is commonly used to manage IoT devices remotely?
a) HTTPb) SNMPc) MQTTd) FTP
Correct Answer: c) MQTT
Explanation: MQTT is a lightweight protocol commonly used for messaging and controlling IoT devices
What network device separates broadcast domains?
a) Hubb) Switchc) Routerd) Repeater
Correct Answer: c) Router
Explanation: Routers separate broadcast domains, while switches and hubs operate within the same broadcast domain.
What should be used to test Ethernet cabling for continuity and pinout verification?
a) Crimperb) OTDRc) Wire mapd) Tone generator
Correct Answer: c) Wire map
Explanation: A wire map tester checks the continuity and pinout of Ethernet cables.
What routing protocol allows routers to share incremental updates instead of full routing tables?
a) OSPFb) EIGRPc) RIPd) BGP
Correct Answer: b) EIGRP
Explanation: EIGRP is a hybrid routing protocol that shares incremental updates instead of full routing tables.
What IPv4 header field should a security engineer filter to investigate ARP-related traffic?
a) Source IP addressb) TTLc) Protocold) Version
Correct Answer: c) Protocol
Explanation: ARP traffic is related to the protocol field in the IPv4 header, allowing ARP filtering to identify malicious traffic.