Which OSI layer is responsible for logical addressing?, A. Physical, B. Data Link, C. Network, D. Transport, Which protocol automatically assigns IP addresses to devices?, DNS, B. DHCP, C. FTP, D. SMTP, What is the default port number for HTTPS?, a. 21, B. 22, C. 80, D. 443, What is the primary purpose of DNS?, A. Assign IP addresses, B. Encrypt data, C. Translate names into IP addresses, D. Route packets, Which protocol is connection-oriented?, A. UDP, B. ICMP, C. TCP, D. ARP, Which command is commonly used to test network connectivity?, A. ping, B. copy, C. mkdir, D. format, What is the subnet mask for a /24 network?, A. 255.0.0.0, B. 255.255.0.0, C. 255.255.255.0, D. 255.255.255.255, Which protocol is used to securely access a remote device?, A. Telnet, B. FTP, C. SSH, D. HTTP, Which layer of the OSI model is responsible for routing?, A. Network, B. Session, C. Data Link, D. Presentation, How many usable host addresses are available in a /29 subnet?, A. 4, B. 6, C. 8, D. 14, What is the loopback address in IPv4?, 192.168.1.1, B. 0.0.0.0, C. 127.0.0.1, D. 255.255.255.255, Which protocol maps IP addresses to MAC addresses?, A. DNS, B. ARP, C. ICMP, D. SMTP, Which topology connects all devices to a central switch?, A. Bus, B. Ring, C. Mesh, D. Star, What is the default port number for SSH?, A. 21, B. 22, C. 23, D. 25, Which protocol is used for sending email?, A. FTP, B. SMTP, C. DNS, D. SNMP, . What is the purpose of a default gateway?, A. Store files, B. Assign MAC addresses, C. Connect to external networks, D. Encrypt traffic, Which IPv4 address class has a default mask of 255.255.255.0?, A. Class A, B. Class B, C. Class C, D. Class D, Which device separates broadcast domains?, A. Hub, B. Repeater, C. Switch, D. Router, What is the maximum number of hosts in a /30 subnet?, A. 2 usable hosts, B. 4 usable hosts, C. 6 usable hosts, D. 14 usable hosts, Which protocol is commonly used for network monitoring?, A. SNMP, B. FTP, C. SSH, D. POP3, Which command displays the routing table on a Cisco router?, show vlan, B. show interfaces, C. show ip route, D. show running-config, What is the main advantage of VLANs?, A. Faster internet, B. Network segmentation, C. More storage, D. Better cabling, Which protocol is used to obtain a webpage from a web server?, A. HTTP, B. FTP, C. SMTP, D. DHCP, Which address is used to send data to all devices on a network?, A. Unicast, B. Multicast, C. Broadcast, D. Anycast, Which layer of the TCP/IP model corresponds to the OSI Transport layer?, A. Internet, B. Application, C. Network Access, D. Transport, What is the purpose of ICMP?, A. File transfer, B. Email delivery, C. Error reporting and diagnostics, D. Name resolution, Which routing protocol uses hop count as its metric?, . OSPF, B. RIP, C. BGP, D. EIGRP, A switch learns a device's MAC address from:, A. Destination MAC address, B. Source MAC address, C. IP address, D. ARP cache, Which protocol is used to transfer files between computers?, SMTP, B. FTP, C. DNS, D. SNMP, Which command displays the current IP configuration in Windows?, A. ping, B. netstat, C. ipconfig, D. tracert, . What is the primary purpose of a subnet mask?, Encrypt data, B. Identify network and host portions of an IP address, C. Assign MAC addresses, D. Block unwanted traffic, Which IPv4 class has the range 192.0.0.0 to 223.255.255.255?, A. Class A, B. Class B, C. Class C, D. Class D, What is the destination MAC address of a broadcast frame?, A. 00:00:00:00:00:00, B. FF:FF:FF:FF:FF:FF, C. AA:AA:AA:AA:AA:AA, D. 11:11:11:11:11:11, Which protocol is used to discover the path packets take to a destination?, A. ping, B. traceroute/tracert, C. arp, D. nslookup, Which device regenerates and amplifies network signals?, A. Router, B. Switch, C. Repeater, D. Firewall, What is the default port number for Telnet?, A. 21, B. 22, C. 23, D. 25, Which routing protocol is considered a link-state protocol?, RIP, B. OSPF, C. IGRP, D. BGP, Which layer is responsible for error detection using CRC?, Physical, B. Data Link, C. Network, D. Session, Which command displays a device's ARP table?, arp -a, B. ping, C. route print, D. netstat, Which protocol is used to synchronize time on network devices?, A. NTP, B. FTP, C. ICMP, D. SMTP

networking basics

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