Based on the exhibit, the TFTP server has an IP address of 172.16.1.101 with a subnet mask of 255.255.255.240. This subnet mask translates to a /28 subnet, which does not align with the /29 subnet mask used on the connected routers (172.16.1.97/29). Due to this mismatch, the TFTP server likely cannot communicate properly within the network, causing the backup failure. Correcting the subnet mask on the TFTP server to match the /29 subnet of the routers should resolve the issue.
The term 'baby giant' refers to Ethernet frames that are slightly larger than the standard maximum transmission unit (MTU) but not as large as 'jumbo' frames. The standard Ethernet MTU is 1500 bytes for payload, and with the addition of the Ethernet header and trailer, the frame size is 1518 bytes. Frames larger than 1518 bytes up to 1600 bytes are considered baby giants. Therefore, an MTU size of 1600 would produce frames that fall into the baby giant category, causing a baby giant error.