Microsoft Networking Essentials Exam Network Protocols & Standards 2 — Questions and Answers
Question 1: Which protocol operates at the Network layer and is used to test connectivity between hosts?
- TCP
- UDP
- ICMP (Correct answer)
- FTP
Correct answer: ICMP
ICMP (Internet Control Message Protocol) operates at the Network layer and is used by tools like ping and traceroute to test network connectivity.
Question 2: What does the TTL field in an IP packet header control?
- Packet encryption strength
- Maximum number of hops before the packet is discarded (Correct answer)
- Time the packet waits in a queue
- Packet priority level
Correct answer: Maximum number of hops before the packet is discarded
TTL (Time to Live) specifies the maximum number of router hops a packet can traverse before being discarded, preventing packets from circulating indefinitely.
Question 3: Which IEEE standard defines the Wi-Fi 6 (802.11ax) wireless networking specification?
- IEEE 802.11n
- IEEE 802.11ac
- IEEE 802.11ax (Correct answer)
- IEEE 802.11g
Correct answer: IEEE 802.11ax
IEEE 802.11ax, marketed as Wi-Fi 6, is the wireless networking standard that provides improved performance in high-density environments and greater efficiency.
Question 4: Which protocol provides connection-less, best-effort delivery of datagrams?
- TCP
- UDP (Correct answer)
- HTTPS
- FTP
Correct answer: UDP
UDP (User Datagram Protocol) provides connectionless, best-effort delivery without guarantees of delivery, ordering, or error checking, making it faster than TCP.
Question 5: What is the default port number for FTP data transfer?
- 20 (Correct answer)
- 21
- 22
- 23
Correct answer: 20
FTP uses port 20 for data transfer and port 21 for control commands, forming a two-channel communication system.
Question 6: Which protocol is used to synchronize time across network devices?
- SNMP
- NTP (Correct answer)
- LDAP
- RADIUS
Correct answer: NTP
NTP (Network Time Protocol) synchronizes the clocks of computers over a network to a reference time source, ensuring consistent timestamps.
Microsoft Networking Essentials Exam Network Protocols & Standards 2
Which protocol operates at the Network layer and is used to test connectivity between hosts?