diff --git a/reactos/drivers/ksfilter/ks/allocators.c b/reactos/drivers/ksfilter/ks/allocators.c
index 20ef49826d6..9880dea7ce8 100644
--- a/reactos/drivers/ksfilter/ks/allocators.c
+++ b/reactos/drivers/ksfilter/ks/allocators.c
@@ -368,7 +368,7 @@ KsCreateAllocator(
     OUT PHANDLE AllocatorHandle)
 {
     return KspCreateObjectType(ConnectionHandle,
-                               L"{642F5D00-4791-11D0-A5D6-28DB04C10000}", //KSNAME_Allocator
+                               KSSTRING_Allocator,
                                (PVOID)AllocatorFraming,
                                sizeof(KSALLOCATOR_FRAMING),
                                GENERIC_READ,
@@ -386,15 +386,47 @@ KsCreateDefaultAllocator(
 }
 
 /*
-    @unimplemented
+    @implemented
 */
-KSDDKAPI NTSTATUS NTAPI
+KSDDKAPI
+NTSTATUS
+NTAPI
 KsValidateAllocatorCreateRequest(
     IN  PIRP Irp,
-    OUT PKSALLOCATOR_FRAMING* AllocatorFraming)
+    OUT PKSALLOCATOR_FRAMING* OutAllocatorFraming)
 {
-    UNIMPLEMENTED;
-    return STATUS_UNSUCCESSFUL;
+    PKSALLOCATOR_FRAMING AllocatorFraming;
+    ULONG Size;
+    NTSTATUS Status;
+    ULONG SupportedFlags;
+
+    /* set minimum request size */
+    Size = sizeof(KSALLOCATOR_FRAMING);
+
+    Status = KspCopyCreateRequest(Irp,
+                                  KSSTRING_Allocator,
+                                  &Size,
+                                  (PVOID*)&AllocatorFraming);
+
+    if (!NT_SUCCESS(Status))
+        return Status;
+
+    /* allowed supported flags */
+    SupportedFlags = (KSALLOCATOR_OPTIONF_COMPATIBLE | KSALLOCATOR_OPTIONF_SYSTEM_MEMORY |
+                      KSALLOCATOR_REQUIREMENTF_INPLACE_MODIFIER | KSALLOCATOR_REQUIREMENTF_SYSTEM_MEMORY | KSALLOCATOR_REQUIREMENTF_FRAME_INTEGRITY | 
+                      KSALLOCATOR_REQUIREMENTF_MUST_ALLOCATE);
+
+
+    if (!AllocatorFraming->FrameSize || (AllocatorFraming->OptionsFlags & (~SupportedFlags)))
+    {
+        FreeItem(AllocatorFraming);
+        return STATUS_INVALID_PARAMETER;
+    }
+
+    /* store result */
+    *OutAllocatorFraming = AllocatorFraming;
+
+    return Status;
 }
 
 NTSTATUS
diff --git a/reactos/drivers/ksfilter/ks/api.c b/reactos/drivers/ksfilter/ks/api.c
index 2a051f03770..8a34ac8d008 100644
--- a/reactos/drivers/ksfilter/ks/api.c
+++ b/reactos/drivers/ksfilter/ks/api.c
@@ -779,7 +779,7 @@ KsAddObjectCreateItemToDeviceHeader(
 }
 
 /*
-    @unimplemented
+    @implemented
 */
 KSDDKAPI
 NTSTATUS
diff --git a/reactos/drivers/ksfilter/ks/clocks.c b/reactos/drivers/ksfilter/ks/clocks.c
index 57d15bea71d..39611935076 100644
--- a/reactos/drivers/ksfilter/ks/clocks.c
+++ b/reactos/drivers/ksfilter/ks/clocks.c
@@ -46,7 +46,7 @@ KsCreateClock(
     OUT PHANDLE ClockHandle)
 {
     return KspCreateObjectType(ConnectionHandle,
-                               L"{53172480-4791-11D0-A5D6-28DB04C10000}", /* KSName_Clock */
+                               KSSTRING_Clock,
                                ClockCreate,
                                sizeof(KSCLOCK_CREATE),
                                GENERIC_READ,
@@ -54,17 +54,40 @@ KsCreateClock(
 }
 
 /*
-    @unimplemented
+    @implemented
 */
 KSDDKAPI
 NTSTATUS
 NTAPI
 KsValidateClockCreateRequest(
     IN  PIRP Irp,
-    OUT PKSCLOCK_CREATE* ClockCreate)
+    OUT PKSCLOCK_CREATE* OutClockCreate)
 {
-    UNIMPLEMENTED;
-    return STATUS_UNSUCCESSFUL;
+    PKSCLOCK_CREATE ClockCreate;
+    NTSTATUS Status;
+    ULONG Size;
+
+    /* minimum request size */
+    Size = sizeof(KSCLOCK_CREATE);
+
+    /* copy create request */
+    Status = KspCopyCreateRequest(Irp, 
+                                  KSSTRING_Clock,
+                                  &Size,
+                                  (PVOID*)&ClockCreate);
+
+    if (!NT_SUCCESS(Status))
+        return Status;
+
+    if (ClockCreate->CreateFlags != 0)
+    {
+        /* flags must be zero */
+        FreeItem(ClockCreate);
+        return STATUS_INVALID_PARAMETER;
+    }
+
+    *OutClockCreate = ClockCreate;
+    return STATUS_SUCCESS;
 }
 
 NTSTATUS
diff --git a/reactos/drivers/ksfilter/ks/connectivity.c b/reactos/drivers/ksfilter/ks/connectivity.c
index 13e26b53906..7b79f51e38a 100644
--- a/reactos/drivers/ksfilter/ks/connectivity.c
+++ b/reactos/drivers/ksfilter/ks/connectivity.c
@@ -31,7 +31,7 @@ KsCreatePin(
     }
 
     return KspCreateObjectType(FilterHandle,
-                               L"{146F1A80-4791-11D0-A5D6-28DB04C10000}", //KSNAME_Pin
+                               KSSTRING_Pin,
                                (PVOID)Connect,
                                ConnectSize,
                                DesiredAccess,
diff --git a/reactos/drivers/ksfilter/ks/device.c b/reactos/drivers/ksfilter/ks/device.c
index 32b1ee2112f..33811e14e7b 100644
--- a/reactos/drivers/ksfilter/ks/device.c
+++ b/reactos/drivers/ksfilter/ks/device.c
@@ -613,7 +613,7 @@ IKsDevice_Create(
 }
 
 /*
-    @unimplemented
+    @implemented
 */
 KSDDKAPI
 NTSTATUS
diff --git a/reactos/drivers/ksfilter/ks/image.c b/reactos/drivers/ksfilter/ks/image.c
index db004c404eb..39df5e240e1 100644
--- a/reactos/drivers/ksfilter/ks/image.c
+++ b/reactos/drivers/ksfilter/ks/image.c
@@ -9,7 +9,7 @@
 #include "priv.h"
 
 /*
-    @unimplemented
+    @implemented
 */
 KSDDKAPI
 NTSTATUS
diff --git a/reactos/drivers/ksfilter/ks/ksfunc.h b/reactos/drivers/ksfilter/ks/ksfunc.h
index 28b18d54390..72c9f487861 100644
--- a/reactos/drivers/ksfilter/ks/ksfunc.h
+++ b/reactos/drivers/ksfilter/ks/ksfunc.h
@@ -107,4 +107,11 @@ FindMatchingCreateItem(
     LPWSTR Buffer,
     OUT PCREATE_ITEM_ENTRY *OutCreateItem);
 
+NTSTATUS
+KspCopyCreateRequest(
+    IN PIRP Irp,
+    IN LPWSTR ObjectClass,
+    IN OUT PULONG Size,
+    OUT PVOID * Result);
+
 #endif
diff --git a/reactos/drivers/ksfilter/ks/misc.c b/reactos/drivers/ksfilter/ks/misc.c
index f0a5acaed14..6f6218d069a 100644
--- a/reactos/drivers/ksfilter/ks/misc.c
+++ b/reactos/drivers/ksfilter/ks/misc.c
@@ -98,3 +98,44 @@ KsPinDataIntersectionEx(
     UNIMPLEMENTED;
     return STATUS_UNSUCCESSFUL;
 }
+
+
+NTSTATUS
+KspCopyCreateRequest(
+    IN PIRP Irp,
+    IN LPWSTR ObjectClass,
+    IN OUT PULONG Size,
+    OUT PVOID * Result)
+{
+    PIO_STACK_LOCATION IoStack;
+    ULONG ObjectLength, ParametersLength;
+    PVOID Buffer;
+
+    /* get current irp stack */
+    IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+    /* get object class length */
+    ObjectLength = (wcslen(ObjectClass) + 2) * sizeof(WCHAR);
+
+    /* check for minium length requirement */
+    if (ObjectLength  + *Size > IoStack->FileObject->FileName.MaximumLength)
+        return STATUS_UNSUCCESSFUL;
+
+    /* extract parameters length */
+    ParametersLength = IoStack->FileObject->FileName.MaximumLength - ObjectLength;
+
+    /* allocate buffer */
+    Buffer = AllocateItem(NonPagedPool, ParametersLength);
+    if (!Buffer)
+        return STATUS_INSUFFICIENT_RESOURCES;
+
+    /* copy parameters */
+    RtlMoveMemory(Buffer, &IoStack->FileObject->FileName.Buffer[ObjectLength / sizeof(WCHAR)], ParametersLength);
+
+    /* store result */
+    *Result = Buffer;
+    *Size = ParametersLength;
+
+    return STATUS_SUCCESS;
+}
+
diff --git a/reactos/drivers/ksfilter/ks/topology.c b/reactos/drivers/ksfilter/ks/topology.c
index 48342c0fbf6..3b3f34020a5 100644
--- a/reactos/drivers/ksfilter/ks/topology.c
+++ b/reactos/drivers/ksfilter/ks/topology.c
@@ -84,7 +84,7 @@ KsCreateTopologyNode(
     OUT PHANDLE NodeHandle)
 {
     return KspCreateObjectType(ParentHandle,
-                               L"{0621061A-EE75-11D0-B915-00A0C9223196}",
+                               KSSTRING_TopologyNode,
                                (PVOID)NodeCreate,
                                sizeof(KSNODE_CREATE),
                                DesiredAccess,
@@ -92,16 +92,47 @@ KsCreateTopologyNode(
 }
 
 /*
-    @unimplemented
+    @implemented
 */
-KSDDKAPI NTSTATUS NTAPI
+KSDDKAPI
+NTSTATUS
+NTAPI
 KsValidateTopologyNodeCreateRequest(
     IN  PIRP Irp,
     IN  PKSTOPOLOGY Topology,
-    OUT PKSNODE_CREATE* NodeCreate)
+    OUT PKSNODE_CREATE* OutNodeCreate)
 {
-    UNIMPLEMENTED;
-    return STATUS_UNSUCCESSFUL;
+    PKSNODE_CREATE NodeCreate;
+    ULONG Size;
+    NTSTATUS Status;
+
+    /* did the caller miss the topology */
+    if (!Topology)
+        return STATUS_INVALID_PARAMETER;
+
+    /* set create param  size */
+    Size = sizeof(KSNODE_CREATE);
+
+    /* fetch create parameters */
+    Status = KspCopyCreateRequest(Irp,
+                                  KSSTRING_TopologyNode,
+                                  &Size,
+                                  (PVOID*)&NodeCreate);
+
+    if (!NT_SUCCESS(Status))
+        return Status;
+
+    if (NodeCreate->CreateFlags != 0 || (NodeCreate->Node >= Topology->TopologyNodesCount && NodeCreate->Node != (ULONG)-1))
+    {
+        /* invalid node create */
+        FreeItem(NodeCreate);
+        return STATUS_UNSUCCESSFUL;
+    }
+
+    /* store result */
+    *OutNodeCreate = NodeCreate;
+
+    return Status;
 }
 
 /*