diff --git a/NWT/4BHITN-DHCP-LAB-7.4.2.md b/NWT/4BHITN-DHCP-LAB-7.4.2.md
index 9ef9578..da810ed 100644
--- a/NWT/4BHITN-DHCP-LAB-7.4.2.md
+++ b/NWT/4BHITN-DHCP-LAB-7.4.2.md
@@ -9,12 +9,12 @@
 | R1 | G0/0/0 | 10.0.0.1 | 255.255.255.252 | N/A |
 | R1 | G0/0/1 | N/A | N/A | N/A |
 | R1 | G0/0/1.100 | 192.168.1.1 | 255.255.255.192 | N/A |
-| R1 | G0/0/1.200 | 192.168.1.65 | 255.255.255.224 | N/A |
+| R1 | G0/0/1.200 | 192.168.1.65 | 255.255.255.240 | N/A |
 | R1 | G0/0/1.1000 | N/A | N/A | N/A |
 | R2 | G0/0/0 | 10.0.0.2 | 255.255.255.252 | N/A |
-| R2 | G0/0/1 | 192.168.1.97 | 255.255.255.224 | N/A |
+| R2 | G0/0/1 | 192.168.1.97 | 255.255.255.240 | N/A |
 | S1 | VLAN 200 | 192.168.1.66 | 255.255.255.192 | 192.168.1.65 |
-| S2 | VLAN 1 | 192.168.1.98 | 255.255.255.224 | 192.168.1.97 |
+| S2 | VLAN 1 | 192.168.1.98 | 255.255.255.240 | 192.168.1.97 |
 | PC-A | NIC | DHCP | DHCP | DHCP |
 | PC-B | NIC | DHCP | DHCP | DHCP |